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Pulse-type rotary encoder with pushbutton and 18t spline shaft A five-pin rotary encoder with two mounting tabs that has been confirmed as the pulse type. Suitable for use in several projects published in the magazine (see below).
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PCB-mount right-angle SMA socket A PCB-mounting SMA socket with a shaft around 13-14mm long, suitable for the VHF input of the DAB+/FM/AM radio.
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16x2 Alphanumeric serial (I²C) LCD module with blue backlight A 16x2 alphanumeric LCD module with blue backlight, supplied with an I²C driver module. Solder the module to the display and you can update the characters on the display over an I²C bus. For more details, see the El Cheapo Asian Electronic Modules article in the March 2017 issue.
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Si8751AB 2.5kV isolated Mosfet driver with integral power supply A single Si8751AB Mosfet driver IC in an 8-pin SOIC package, as used in the Universal 12/24V Battery Charge Controller.
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IPP80P03P4L04 high-current P-channel Mosfet A high-current P-channel Mosfet with very low on-resistance in a standard TO-220 package. Its critical specifications are: Maximum drain-source voltage: 30V Maximum gate-source voltage: +5V, -16V Maximum continuous drain current: 80A Maximum pulsed drain current: 320A Maximum dissipation: 137W Gate threshold voltage: 1-2V On-resistance: 3.7mΩ Input capacitance: 8.7nF Output capacitance: 2.4nF Reverse transfer capacitance: 65pF
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Pair of CSD18534KCS logic-level Mosfets Pack of two CSD18534KCS N-channel logic level Mosfets. These replace the IPP230N06L3 which are now obsolete. They are suitable replacements for the STP30NE06L and RFP30N06LE Mosfets specified in a number of our projects. The main difference is that these ones have much faster switching. They can be used with the Ultrasonic Anti-Fouling and Barking Dog Blaster units. The critical parameters are: Breakdown voltage: 60V Maximum DC current: 73A Peak current: 164A Power dissipation: 107W Maximum on-resistance: 7.6mΩ @ 10V, 10.2mΩ @ 4.5V Maximum gate voltage: ±20V Input capacitance: 1500pF Gate charge: 9.3nC Turn-on delay/rise time: 4.2ns/4.8ns Turn-off delay/fall time: 10.4ns/2.4ns These are also suitable for use in the 40V 5A Hybrid Switchmode/Linear Bench supply project.
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3.5-inch TFT Touchscreen LCD module with SD card socket A 3.5in 480x320 pixel colour touchscreen display module, as used in the Micromite LCD BackPack V3 and described in the May 2019 issue. Uses a 14-pin header for interfacing to the display and touch sensor, plus a 4 pin (unpopulated) header for the onboard SD card holder.
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One 40kHz 50W ultrasonic transducer An ultrasonic transducer that can be used to build the High Power Ultrasonic Cleaner from the September & October 2020 issues.
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64x32 white OLED screen (0.49-inch, 1.25cm diagonal) A small 64x32 white OLED screen, as used in the Pocket Audio Oscillator project.
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8MHz SMD oscillator module and 100nF bypass capacitor for the Colour Maximite 2 The optional clock oscillator module components for the Colour Maximite 2. You don't normally need to fit these unless you are having problems with the video image shimmering, and it's very unlikely that you will experience that.
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WS2812 8x8 RGB LED matrix A 10x10cm module with 64 SMD 5050 package RGB LEDs that runs from a 5V supply and is controlled using a 1-wire style serial bus. See our article in the January 2020 issue for details on how these modules can be driven and daisy-chained.
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DS3231 real-time clock IC (SOIC-16) An accurate timekeeping chip with precision internal crystal in a wide SOIC-16 SMD package.
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MAX038 function generator IC (DIP-20) A MAX038 Function Generator IC in a 20-pin narrow dual inline package.
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MC1496P double-balanced mixer IC (DIP-14) An MC1496P double-balanced mixer IC in a 14-pin dual inline package. These ICs are now getting difficult to obtain in this package. They are still being manufactured in SMD packages.
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AD8495 thermocouple interface module A small module with an AD8495 IC and a handful of other parts, used to convert the output from a thermocouple to a DC voltage that can be sampled by a microcontroller or other circuitry. As used in the April 2020 DIY Solder Reflow Oven controller.
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GY-68 Barometric Pressure/Altitude/Temperature I²C Sensor breakout board A tiny breakout board with a BMP180 barometric pressure/altitude/temperature sensor plus a regulator and level shifter. Connects easily to an Arduino, Micromite, etc using the I²C bus via a standard 4-pin header. For more information, see the GY-68 and BMP180 data sheets.
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DHT22/AM2302 Temperature and Humidity sensor module A DHT22/AM2302 digital temperature and humidity sensor module, as described in the February 2017 "El Cheapo Electronic Modules" article. If you're using this to build the Altimeter/Weather Station from December 2017, you will need a 1k resistor wired between pins 1 and 2 and a 100nF capacitor wired in series with pin 4; see errata.
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AD9833 DDS module with programmable attenuator A Direct Digital Synthesis module using the AD9833 IC and a 25MHz crystal oscillator. As described in the El Cheapo Asian Electronics Modules article in the April 2017 issue. This is the version with the onboard programmable gain amplifier. The SMA and header connectors may be supplied pre-soldered.
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MC1310P FM Stereo Demodulator IC (DIP-14) An MC1310P FM Stereo Demodulator IC in a 14-pin dual inline package. These are no longer being manufactured; they are new-old stock.
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110cm telescopic FM antenna 1100mm fulled extended, 200mm minimum length. Seven sections, 7mm diameter, 3mm hole for screw mounting. Ideal for FM reception. Suitable for the Super-9 Stereo FM Radio.
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BF992 dual-gate depletion-mode Mosfet (SOT-143B) N-channel dual-gate depletion Mosfets as used in the Super-9 FM Radio. Two are needed per project.
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Neosid M99-073-96 K3 Assembly pack for Super-9 Stereo FM Radio One Neosid M99-073-96 K3 Assembly comprising: M76-403-95 K Former M76-404-95 K Can M76-409-95 K3 Cup Core M76-410-95 K3 Screw Core Two are required to build the Super-9 Stereo FM Radio.
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CA3089E FM IF amplifier and demodulator IC (DIP-16) An FM amplifier/limiter/demodulator chip, as used in the Super-9 Stereo FM Radio.
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FJA4313OTU 15A NPN transistor One 230V, 15A, 130W 30MHz NPN transistor in a TO-247 package. As used in the SC200 audio amplifier and 45V, 8A High-power Linear Bench Supply (four required).
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PCA9685 16-channel 12-bit PWM module A PCA9685-based PWM I/O expander module, as described in the November 2019 issue. Controlled via I2C.
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MCP23017 16-channel I/O expander module An MCP23017-based 16-channel I/O expander module, as described in the November 2019 issue. Controlled via I2C. Supplied with separate headers.
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PCF8574 8-channel I/O expander module A PCF8574-based 8-channel I/O expander module, as described in the November 2019 issue. Controlled via I2C.
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One ultra-bright PINK 3216/1206 SMD LED One very bright diffused pink SMD LED in a 3216/1206 package (3.2 x 1.6mm). 200-300mCd @ 20mA, Vf=2.0-3.6V @ 20mA.
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Strip of ten high-brightness CYAN 3216/1206 SMD LEDs Ten bright cyan SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). 475-480nm??, ??mCd @ 20mA, 3.0-3.4V @ 20mA.
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Strip of ten ultra-bright YELLOW 3216/1206 SMD LEDs Ten very bright diffused yellow SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). 15-21/Y2C-AN1P2/3T: 588-590nm, 100-150mCd @ 20mA, 130° viewing angle, Vf=2.0-2.1V @ 20mA.
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Strip of ten ultra-bright AMBER 3216/1206 SMD LEDs Ten very bright diffused orange/amber SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). KO-1206QOC/08: 600-605nm, 150-200mCd @ 20mA, 120° viewing angle, Vf=2.1-2.3V @ 20mA.
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Strip of ten ultra-bright BLUE 3216/1206 SMD LEDs Ten very bright diffused blue SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). 465-475nm, ~650mCd @ 20mA, 120° viewing angle, Vf=3.2-3.4V @ 20mA.
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23LC1024 1MB RAM (SOIC-8) A one megabyte static RAM (SRAM) chip in an 8-pin SOIC SMD package, suitable for use with the Micromite LCD BackPack V3.
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AT25SF041 512KB flash (SOIC-8) A half megabyte flash memory chip in an 8-pin SOIC SMD package, suitable for use with the Micromite LCD BackPack V3.
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10µF 16V X7R ceramic through-hole capacitor A small 10µF ceramic capacitor with superior performance in a through-hole package, easily soldered and suitable for use with various Micromites.
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ISD1820-based voice recording and playback module This small module can record and play back up to 10 seconds of audio by default, although this can be changed by varying the value of one resistor. See the article on the Junk Mail Repeller in the August 2019 issue for more details.
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GY-BM BMP280 module GY-BMP280 Barometric Pressure/Altitude/Temperature I²C Sensor breakout board A tiny breakout board with a BMP280 barometric pressure/altitude/temperature sensor plus a regulator and level shifter. Connects easily to an Arduino, Micromite, etc using the I²C bus via a 6-pin header. For more information, see the BMP280 data sheet.
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GY-BME280 GY-BME280 Barometric Pressure/Altitude/Temperature/Humidity I²C Sensor breakout board A tiny breakout board with a BME280 barometric pressure/altitude/temperature/humidity sensor plus a regulator and level shifter. Connects easily to an Arduino, Micromite, etc using the I²C bus via a standard 4-pin header. For more information, see the BME280 data sheet.
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TDA1543A DAC IC A 16-bit Stereo DAC IC (DIP-8) which can be used to build the Raspberry Pi audio board (for speech synthesis etc). Note that this A-suffix version is slightly different from the part originally used in that project and so you need to make some slight changes to the Raspberry Pi configuration for it to work. You can download the files you need to do this from: http://www.siliconchip.com.au/Shop/6/5097
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TDA1543 DAC IC 16-bit Stereo DAC IC (DIP-8) as used in the Bad Vibes Infrasound Snooper and Raspberry Pi audio board (for speech synthesis etc).
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1.3-inch blue OLED with 4-pin I²C interface 128x64 pixel, 3cm OLED display to suit the June 2019 GPS Speedo/Clock/Volume Control project.
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MCP4251-502E/P dual 5kΩ digital potentiometer An MCP4251-502E/P chip in a 14-pin DIL package, as used in the June 2019 GPS "Finesaver Plus" Speedo/Clock/Volume Control project.
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Spare cable for VK2828U7G5LF GPS module A 6-pin micro JST (1.25mm) plug with 10cm wires terminated in bare ends. Plugs into the VK2828U7G5LF/VK2828U8G5LF modules. This allows you to swap the GPS module between multiple boards without having to de-solder the wires, or can be used to replace a damaged cable. The wires are colour-coded but the colours do not necessarily match those of the wires supplied with the GPS module.
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Small 2.5A step-down regulator module (LM2596-based) A 45x20mm module which uses the LM2596 buck regulator IC. Input is 3.2-35V, output is 1.25-35V at up to 2.5A continuous. Efficiency up to 92%. Output voltage is adjusted using a multi-turn trimpot. The input and output DC connections are made via pads in the corner of the PCB. Note that as with a typical buck regulator, the output voltage must be at least a couple of volts lower than the input voltage for proper regulation.
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TEA5767 FM receiver module A small breakout board for the TEA5767 FM receiver IC, as used in the Micromite LCD BackPack Clock Radio described in Circuit Notebook, June 2019. A pinout diagram for this module can be found at: https://forum.arduino.cc/index.php?topic=550026.msg3844369#msg3844369
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Smaller TEA5767 FM receiver module A small breakout board for the TEA5767 FM receiver IC, as used in the Micromite LCD BackPack Clock Radio described in Circuit Notebook, June 2019. This is the smaller version of the module, with five pins regularly spaced on each side, as the author used in that article.
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PAM8610 2x10W Class-D stereo amplifier module A small stereo Class-D amplifier module which can run from 8-12V DC and can deliver up to 10W per channel into 4Ω. As used in the Micromite LCD BackPack Clock Radio described in Circuit Notebook, June 2019.
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DS3231-based Real Time Clock & Calendar module with mounting hardware and rechargeable cell A DS3231-based RTCC module with onboard I²C pull-up resistors and pin header interface. Included in the pack are two 10mm M2 Nylon tapped spacers and four 6mm M2 Nylon machine screws for mounting plus an LIR2032 rechargeable Lithium-ion cell. Note: as this module has onboard pull-up resistors for the I²C bus, you may need to remove them, or avoid fitting pull-up resistors on the master, for it to share a bus with other peripherals.
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VK2828U7G5LF TTL GPS/GLONASS/GALILEO module with antenna and cable A VK2828U7G5LF GPS module from GMOUSE. Data sheet is available at https://github.com/CainZ/V.KEL-GPS/blob/master/VK2828U7G5LF%20Data%20Sheet%2020150902.pdf Features onboard ceramic patch antenna. Basic specifications are:
A short 6-way cable with plug is supplied. If you order this, you may receive a VK2828U8G5LF which is an updated version of the module with slightly better specifications but provides the same functions. | |||||||||||||
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465mm extendable VHF whip antenna with SMA connector 465mm fulled extended, 190mm minimum length. Ideal for DAB+ reception; should work OK for FM but a longer antenna would be better for FM.
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700mm extendable VHF whip antenna with SMA connector 700mm fulled extended, 190mm minimum length. Good for FM and ideal for DAB+ reception.
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PCB-mount right-angle PAL socket
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Dual Horizontal PCB-mounting RCA sockets (white/red) [RCA-210] These RCA sockets are similar to the discontinued Altronics P0213 and suit the DAB+/FM/AM Radio PCB. They have an RCA-210 footprint.
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2.8-inch TFT Touchscreen LCD module with SD card socket A touch screen display module as used in the Micromite LCD BackPack. Uses a 14-pin header for interfacing to the display (ILI9341 controller) and touch sensor, plus a 4 pin (unpopulated) header for the onboard SD card holder.
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IPA60R520E6 600V logic-level Mosfet One IPA60R520E6 600V logic-level Mosfet. Suited for high speed switching of rectified mains or other high voltage supplies. One or two are required for the Hifi Stereo Valve Preamplifier. Specifications: Maximum drain-source voltage: 650V Maximum continuous drain current: 7A Maximum pulsed drain current: 22A Maximum on-resistance: 0.52Ω Gate charge: 23.4nC Input capacitance: 512pF Turn-on delay time: 12ns Rise time: 10ns Turn-off delay time: 75ns Fall time: 9ns
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DRV8825-based stepper motor driver module A 20x15mm module based on the DRV8825 stepper motor driver IC. It runs off 8.2-45V with a 2.5-5.25V logic supply. It is rated for an output of up to 1.5A per phase and it supports microstepping. It comes with a small stick-on heatsink which is not required in all applications. For more details, see the February 2019 El Cheapo Modules article on Stepper Motor Drivers.
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SW-18010P Vibration Sensor Switch A small switch in a can which closes when exposed to shocks/vibration/acceleration. As used in the Motion-sensing 12V Power Switch project in the February 2019 issue.
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MCP1700 3.3V LDO (TO-92) A 3.3V low-dropout regulator in TO-92 package (MCP1700-3302E/TO). | |||||||||||||
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CP2102-based USB/TTL serial converter with microUSB socket and 6-pin right-angle header Note: that there is a separate CP2102 that comes with jumper cable, 5-pin header and a regular USB connector. This is used for other projects and the respective details can be found here: http://www.siliconchip.com.au/Shop/7/3437 A small USB/serial converter module with a microUSB connector - no cable included. Can be used to build the Touchscreen Appliance Energy Meter or to add a USB port to another project which uses an RS-232 TTL serial interface. Modern operating systems like Windows 10 should not require any drivers to use this device - plug it in and it should be recognised and ready to use straight away. We have only tested this adaptor in Windows; it should work with Linux and Mac OSX. Please note: we have had reports that the 3.3V output is actually closer to 4.2V. You should check this voltage before connecting anything critical.
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CP2102-based USB/TTL serial converter with microUSB socket and 6-pin right-angle header (clone version) A small USB/serial converter module with a microUSB connector - no cable included. Can be used to build the Touchscreen Appliance Energy Meter or to add a USB port to another project which uses an RS-232 TTL serial interface. Modern operating systems like Windows 10 should not require any drivers to use this device - plug it in and it should be recognised and ready to use straight away. We have only tested this adaptor in Windows; it should work with Linux and Mac OSX. Please note: this is a clone version which works but the 3.3V output is actually closer to 4.2V. We have reduced the price because of this.
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DFPlayer Mini audio player module A DFPlayer Mini module with microSD card socket. It is controlled via a serial port and can play MP3, WMV and WAV files from the SD card in stereo. It includes a small onboard mono amplifier. See the web for more details.
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Small 2A boost step-up regulator module (MT3608) A 36x17mm module which uses the MT3608 boost regulator IC. Input is 2-24V, output is 5-28V at up to 2A continuous. Efficiency up to 93%, switching frequency 1.2MHz. Output voltage is adjusted using a multi-turn trimpot. The input and output DC connections are made via pads in the corner of the PCB.
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TDA7052AT 1.1W audio amplifier IC (SOIC-8) A TDA7052AT mono amplifier IC, as used in the Opto-Theremin and Steam Train Whistle projects.
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Pair of PCB-mounting right-angle banana sockets (red/black) Two 4mm PCB-mount banana sockets, one red and one black. These are similar to the now-discontinued Altronics P9200 & P9201, as used in the Wide-range Digital LC Meter and other projects.
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1nF ±1% C0G/NP0 ceramic capacitor A single 1nF through-hole capacitor with 1% tolerance and 5mm lead spacing. TWO are required for the LC Meter projects.
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20x4 Alphanumeric serial (I²C) LCD module with blue backlight A 20x4 alphanumeric LCD module with blue backlight, supplied with an I²C driver module which may already be soldered to the display. With it in place, you can update the characters on the display over an I²C bus. For more details, see the El Cheapo Asian Electronic Modules article in the March 2017 issue.
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WeMos D1 R2 Arduino-compatible ARM processor board with WiFi A WeMos D1 R2 board with ESP8266 chipset that incorporates WiFi. Can be programmed using the Arduino IDE but you have to install additional files. See the article on ESP8266 and ThingSpeak.com in the September 2017 issue for more details. This version has a connector for an external antenna (it's a WeMos board clone by Robotdyn).
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microSD Card Adaptor Module A small module with microSD card socket, 6-pin header, onboard 3.3V LDO voltage regulator and SN74LV125A buffer. Simplifies interfacing a microSD card to a 5V-powered microcontroller such as the Arduino Uno. For more information, see our article on this module in the January 2017 issue ("Using Cheap Asian Electronic Modules Part 3").
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ESP-01 WiFi module (with ESP8266 IC) A small WiFi module with an ESP8266 IC and onboard antenna. Communication is via an 8-pin (4x2) header. See the article "A WiFi Server for $5" in the December 2014 issue. Please note: if you order this item, you may receive an upgraded ESP-01S which has more flash (1MB vs 512KB).
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CP2102-based USB/TTL serial converter with 5-pin header and 30cm jumper cable A small USB/serial converter module which plugs straight into a USB port and provides a standard 5-pin header interface with 5V, 3.3V, GND and TTL (3.3V) serial TX/RX pins. Suitable for direct connection to any of the Maximite or Micromite projects. Modern operating systems like Windows 10 should not require any drivers to use this device - plug it in and it should be recognised and ready to use straight away. The 5-way cable supplied has female "Dupont" headers on both ends, which plug into standard pin headers. It can be used to connect the adaptor to a Micromite LCD BackPack. We have only tested this adaptor in Windows; it should work with Linux and Mac OSX. | |||||||||||||
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MC1374P AV modulator IC (DIP-14) An MC1374P A/V modulator IC in a 14-pin dual inline package. These are no longer being manufactured; they are new-old stock.
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Blue 3mm LED with diffused lens A high-brightness blue LED in a 3mm through-hole package with standard (~25mm) lead length and diffused lens. Quite good brightness at 3V and can be driven with just a few milliamps. | |||||||||||||
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5dBi 2.4GHz WiFi antenna with U.FL/IPX adaptor cable A 175mm-tall 2.4GHz black WiFi antenna with right-angle bending hinge, SMA plug and 5dBi gain (vertical polarisation). Supplied with a matching chassis-mount SMA socket and attached 20cm cable terminated in a U.FL/IPX connector, as used on many WiFi devices.
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2dBi omnidirectional 2.4GHz WiFi antenna with U.FL/IPX adaptor cable A 28mm-tall 2.4GHz black WiFi antenna with SMA plug and 2dBi gain (omnidirectional). Supplied with a matching chassis-mount SMA socket and attached 10cm cable terminated in a U.FL/IPX connector, as used on many WiFi devices.
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5m water level sensor (4-20mA) with 5-6m lead A pressure-based water level sensor which is placed at the bottom of the water tank. Supply 24V (positive to red wire) and the current draw will indicate the water level. As used in the WiFi Water Tank Level Meter project.
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Elecrow 1A/500mA Li-ion/LiPo charger board with USB power pass-through A 46 x 32mm module with a micro-USB type B input port and a full-size USB type A output port, plus connections for a solar panel and Li-ion/LiPo cell. For more details, see the article in the August 2017 issue titled "El Cheapo Modules: Li-ion & LiPo Chargers" (starting on page 44). PLEASE NOTE: the red/black colour coding on the cables supplied MAY NOT match the polarity of the connectors on this module. Incorporates an onboard step-up circuit to provide a regulated 5V output (at up to 500mA) from the cell, plus a 1A charger and automatic input-to-output pass-through. Supplied with three 2-wire JST 2.0 cables to connect the cell and output and optionally, a solar panel for charging. Also incorporates battery level indicator LEDs. Note that the input and output USB socket data lines are not connected.
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5V 0.8W 160mA solar panel Panel type: Monocrystalline silicon Dimensions: 99 x 69mm Open circuit voltage: ~6V Full load voltage: ~5V Connections: two solder pads on the underside of the panel
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Geeetech VS1053B MP3/audio shield for Arduino An Arduino shield with a VS1053B audio codec chip. Has a stereo output socket, mono input, onboard electret microphone, microSD card socket and power/activity LEDs. Can play MP3, MP4, Ogg Vorbis, FLAC, WAV and more and record in Ogg Vorbis format with appropriate software. For more details, see the article in the July 2017 issue titled "An Arduino stereo audio playback and recording shield". Also used in the Arduino Music Player project in the same issue.
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NRF24L01+PA+LNA with SMA connector & antenna An NRF24L01 module with 8-pin header. Capable of 1Mbps at distances in excess of 1km. Has onboard LNA (for receive) and power amplifier (for transmit). WiFi-type antenna connects to SMA connector and can be mounted off-board using an SMA extension cable. Note: please check ACMA to verify the allowable frequency range and legal power limit on the frequency you are using to ensure you remain in compliance.
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GY-BME280 module (6-pin/3.3V version) GY-BME280 Barometric Pressure/Altitude/Temperature/Humidity I²C Sensor breakout board A tiny breakout board with a BME280 barometric pressure/altitude/temperature/humidity sensor plus a regulator and level shifter. Connects easily to an Arduino, Micromite, etc using the I²C bus via a 6-pin header. For more information, see the BME280 data sheet.
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ERA-2SM+ Wideband MMIC and ADCH-80A+ Wideband Choke for the 2.5GHz Frequency Counter These two parts from Mini-Circuits are used in the high-frequency input circuitry for the 2.5GHz High-Resolution Frequency Counter. When this project was published, there was no local distributor. They are now available from Clarke & Severne at the following URLs: http://www.cseonline.com.au/ERA-2SM-DC-6GHz-3.4V-16.4dB-Gain.html http://www.cseonline.com.au/ADCH-80A-RF-Choke-50-10-000-MHz.html If you're buying these parts for the 6GHz+ Touchscreen Frequency Counter (October 2016), you need to purchase two sets of this item. We are continuing to supply them for the convenience of customers who are already purchasing PCBs and/or the programmed microcontroller.
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Set of four 8-gang potentiometers with knobs for the 2/3-Way Active Crossover A set of hard-to-get components for the 2/3-Way Adjustable Active Crossover. This pack includes:
The PCB, panels, case pieces and SMD parts are available separately from our shop. The other parts can be purchased from retailers like Jaycar and Altronics.
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LT1490ACN8 dual "Over-the-Top" rail-to-rail op amp An LT1940A dual op amp in 8-pin DIP package, as featured in the July 2017 article titled: “Over-The-Top” rail-to-rail op amps. Typical specifications are as follows: Supply voltage range: 2.4-44V Input common mode range: 0-44V (independent of supply voltage) Quiescent current: ~40µA/amplifier (~80µA total) Gain bandwidth product: 200kHz Slew rate: 60mV/µs Input offset voltage: 150µV Input bias current: 1nA Input noise voltage: 50nV/√Hz Output swing, no load: 3mV to Vs-12mV Ouptut swing, 5mA load: 250mV to Vs-600mV PSRR: 98dB CMRR @ 1kHz: 92dB
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BUK7909-75AIE 75V 120A N-channel SenseFET This is an NXP (now Nexperia) Mosfet in a 5-pin TO-220 package, which incorporates current sensing. Its critical specifications are: Maximum drain-source voltage: 75V Maximum gate-source voltage: ±20V Maximum continuous drain current: 120A Peak drain current: 480A Maximum dissipation: 272W On-resistance: 8mΩ Ratio of drain current to sense current: 500:1 (nominal) Gate-source threshold: 2-4V Input capacitance: 4.7nF Output capacitance: 800pF Reverse transfer capacitance: 455pF As used in the Deluxe eFuse projecf from July and August 2017.
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WeMos D1 Arduino-compatible ARM processor board with WiFi A WeMos D1 board with ESP8266 chipset that incorporates WiFi. Can be programmed using the Arduino IDE but you have to install additional files. See the article on ESP8266 and ThingSpeak.com in the September 2017 issue for more details. Note that this version does not have a connection for an external antenna.
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Elecrow 1A Li-ion/LiPo charger board with USB pass-through A 68 x 49mm module with a mini-USB type B input port and a full-size USB type A output port, plus connections for a solar panel and Li-ion/LiPo cell. For more details, see the article in the August 2017 issue titled "El Cheapo Modules: Li-ion & LiPo Chargers" (starting on page 44). PLEASE NOTE: the red/black colour coding on the cables supplied MAY NOT match the polarity of the connectors on this module. Incorporates an onboard step-up circuit to provide a regulated 5V output from the cell, plus a 1A charger. Supplied with two 2-wire JST 2.0 cables to connect the cell and optionally, a solar panel for charging. Also incorporates a power switch and battery level indicator LEDs.
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DS3231-based Real Time Clock & Calendar module with mounting hardware A DS3231-based RTCC module with onboard I²C pull-up resistors and pin header interface. Included in the pack are two 10mm M2 Nylon tapped spacers and four 6mm M2 Nylon machine screws for mounting. Note 1: no cell is supplied with the module. It is designed to use a rechargeable cell. You can use a CR2032 (or similar) Lithium button cell but in this case you MUST remove the SMD diode to prevent the battery from being charged. See the Super Clock article in the July 2016 issue for more details. Note 2: as this module has onboard pull-up resistors for the I²C bus, you may need to remove them, or avoid fitting pull-up resistors on the master, for it to share a bus with other peripherals.
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DS18B20 waterproof digital temperature sensor with ~1m lead A steel encapsulated DS18B20 digital temperature sensor using the Dallas 1-Wire protocol, on the end of an approximately 1 metre long lead. Terminated with three bare wires: black (ground), yellow or blue (signal) and red (power). Can be used in 2-wire mode, with power via the signal lead (see DS18B20 data sheet).
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TP4056 1A Li-ion/LiPo charger with mini USB socket A 26 x 20mm pre-built module which will charge a single Li-ion or LiPo cell from a 4.5-5.5V source (eg, USB). Charges at up to 1A. Charge current can be changed by switching out one of the SMD resistors. Thermal regulation protects the device before it overheats, reducing charging current if necessary. For more details, see the article in the August 2017 issue titled "El Cheapo Modules: Li-ion & LiPo Chargers" (starting on page 44).
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TP4056 1A Li-ion/LiPo charger with micro USB socket A 26 x 20mm pre-built module which will charge a single Li-ion or LiPo cell from a 4.5-5.5V source (eg, USB). Charges at up to 1A. Charge current can be changed by switching out one of the SMD resistors. Thermal regulation protects the device before it overheats, reducing charging current if necessary. For more details, see the article in the August 2017 issue titled "El Cheapo Modules: Li-ion & LiPo Chargers" (starting on page 44).
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LT1638CN8 dual "Over-the-Top" rail-to-rail op amp An LT1638 dual op amp in 8-pin DIP package, as featured in the July 2017 article titled: “Over-The-Top” rail-to-rail op amps. Typical specifications are as follows: Supply voltage range: 2.4-44V Input common mode range: 0-44V (independent of supply voltage) Quiescent current: ~170µA/amplifier (~340µA total) Gain bandwidth product: 1.2MHz Slew rate: 380mV/µs Input offset voltage: 250µV Input bias current: 20nA Input noise voltage: 20nV/√Hz Output swing, no load: 3mV to Vs-20mV Ouptut swing, 5mA load: 250mV to Vs-600mV PSRR: 100dB CMRR @ 1kHz: 103dB
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GY-471 3A high-side current monitor module A small PCB with a MAX471 IC which contains a 35m# shunt rated for up to 3A, plus a high-side current sense amplifier which provides one analog output indicating the magnitude of the current flow and a digital output indicating the direction. Supplied with a pin header and terminal block. An easy way to monitor DC current flow up to 3A with a microcontroller. Featured in the Circuit Notebook entry titled "12V DC Cyclic Pump Timer" in the July 2017 issue.
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Pack of ten slide potentiometers for 10-Band Graphic Equaliser Pack of ten PS45-21PC3BR10K dual gang linear slide potentiometers with centre detent
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MAX7219 controller (SMD) with pluggable 8x8 red LED matrix display An 8x8 red LED dot matrix, driven by an SMD MAX7219 on a separate, pluggable board. The boards can be daisy chained to make larger displays and are controlled via a serial bus. Pin headers are supplied separately and can be soldered onto the sides of the display, or you can solder one display directly to another using short wire links. See the article in the June 2017 issue, titled "El Cheapo Modules, Part 7: LED Matix displays".
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MAX7219 controller (DIP) with pluggable 8x8 red LED matrix display and jumper leads An 8x8 red LED dot matrix, driven by a DIP MAX7219 on a separate, pluggable board. The boards can be daisy chained to make larger displays and are controlled via a serial bus. The onboard right-angle pin header for power and communications is next to the MAX7219 IC (see photo). It is supplied with a short length of ribbon cable with female DuPont headers at either end, for connection to your microcontroller board. See the article in the June 2017 issue, titled "El Cheapo Modules, Part 7: LED Matix displays".
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MAX7219 controller (SMD) with red 8-digit 7-segment display An 8-digit 7-segment red LED display with 9.2mm-high digits, driven by an SMD MAX7219 IC. It can be controlled via an SPI serial bus. See the article in the June 2017 issue, titled "El Cheapo Modules, Part 7: LED Matix displays".
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AD9833 DDS module without attenuator A Direct Digital Synthesis module using the AD9833 IC and a 25MHz crystal oscillator. As described in the El Cheapo Asian Electronics Modules article in the April 2017 issue. This is the version with no gain or output attenuator.
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Mosquito Lure SMD parts: TPA2005D1DGNR (MSOP-8) Class-D 1.45W amplifier IC and microUSB socket A set of two of the harder-to-get parts for the Male Mosquito Lure:
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MCP120-270GI/TO Supply Supervisor IC (TO-92) An optional supply supervisor IC which can be used in the Micromite Plus Explore 100 development board (not included in the short form kit).
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ACS718 20A isolated current monitor An ACS718KMATR-20B-T in a wide SOIC-16 package, as required by the revised version of the Appliance Energy Meter. This IC provides sufficient isolation to meet insulation standards for double-insulated equipment operating at 230VAC.
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Talema AC1015 Current Transformer A 1000:1 15A current transformer as used in the Appliance Earth Leakage Tester.
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Strip of ten ultra-bright GREEN 3216/1206 SMD LEDs Ten very bright diffused green SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). KO-1206QGC/08: 527-530nm, 192-230mCd @ 20mA, 120° viewing angle, Vf=2.5-2.7V @ 20mA.
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Strip of ten ultra-bright RED 3216/1206 SMD LEDs Ten very bright diffused red SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). KO-1206QRC/08: 620-625nm, 150-200mCd @ 20mA, 120° viewing angle, Vf=2.0-2.2V @ 20mA.
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Red, White, Yellow & Black PCB-mounting RCA sockets Four different coloured PCB-mounting switched RCA sockets. Traditionally, the stereo input sockets for an audio device are white (left) & red (right). But sourcing white sockets is hard, so we're offering this set. These sockets can be used with projects such as the CLASSiC DAC. While they aren't an exact fit for the footprint on that PCB, they will fit with a small amount of coaxing. Use the white and red for the left & right audio inputs and the other two for whatever you like.
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Acrylic pieces to make two inductor bobbins A set of 22 pieces of laser-cut 3mm acrylic to make two inductor bobbins for the Majestic, Senator or Budget Senator speakers.
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Two BSO150N03 dual SMD Mosfets plus a 4.7kΩ 3216/1206 resistor Two dual Mosfets plus a 4.7kΩ resistor, as used in the 4-input Temperature Sensor PCB for the Raspberry Pi. The Mosfets are BSO150N03, dual logic-level N-channel, 30V, 6.1A, 15mΩ, 1420pF input capacitance. The resistor is a 4.7kΩ ±1% SMD 3216/1206 type.
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Micromite Parking Assistant sensor & lid A set of two parts for the Micromite-based Ultrasonic Garage Parking Assistant project: the HC-SR04 Ultrasonic Distance Sensor and laser-cut lid to suit, which fits a UB5 Jiffy Box, with holes for the sensor and screws. You will also need a Micromite LCD BackPack (complete kit available separately) and the associated UB3 laser-cut box lid, plus the rest of the parts listed in the article.
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Dual gang 50kΩ 16mm logarithmic taper potentiometer with spline tooth shaft This potentiometer can be used in the Stereo Valve Preamplifier. This value is hard to get in this style of pot but it suits driving devices with a relatively high load impedance. Note that because it has a spline shaft, not all types of knob will necessarily fit. The types with a grub screw generally work OK, or those designed for spline shafts. Also the shaft is quite short, which means you won't have to cut it down but it will not protrude a long way through a thick panel either.
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Six 70mm tall 7-segment displays, BLUE plus four matching diffused 5mm LEDs Six 70mm tall 7-segment Common Anode displays plus four matching diffused 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project. The digit visible size is 32.2 x 56.9mm and the part code is LBT23101BB. These are pin compatble with the Kingbright SA23-11 series. They are bright and highly efficient; see Fig.3 on page 44 of the December 2015 issue for the I/V curve.
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Six 70mm tall 7-segment displays, EMERALD GREEN plus four matching 5mm LEDs Six 70mm tall 7-segment Common Anode displays plus four matching 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project. The digit visible size is 32.2 x 56.9mm and the part code is LBT23101BGG. These are pin compatble with the Kingbright SA23-11 series. They are bright and highly efficient; see Fig.3 on page 44 of the December 2015 issue for the I/V curve. Note: we were originally supplying C503B-GCN-CY0C0791 LEDs which have a clear lens however we have now switched to an unknown type of green LED with the following specifications, which is an excellent match to the 7-segment displays: 515-525nm, 4000-4500mCd. Note that these are so bright that you might have to increase the current limiting resistor for the colon drive to get them to match the 7-segment display.
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Six 70mm tall 7-segment displays, HIGH BRIGHTNESS RED plus four matching diffused 5mm LEDs Six 70mm tall 7-segment Common Anode displays plus four matching diffused 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project. The digit visible size is 32.2 x 56.9mm and the part code is either CAI23101BS or SA23-11SRWA, depending on which is in stock. These are pin compatble with the Kingbright SA23-11 series. They are bright and highly efficient; see Fig.3 on page 44 of the December 2015 issue for the I/V curves. The best-matching 5mm LEDs we can find are TLDR5400 type. These are bright and diffuse with no hint of orange.
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Blue 5mm LED with diffused lens (25mm leads) A high-brightness blue LED in a 5mm through-hole package with standard lead length (25mm) and diffused lens. Quite good brightness at 3V and can be driven with just a few milliamps.
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Blue 5mm LED with diffused lens (15mm leads) A high-brightness blue LED in a 5mm through-hole package with 15mm lead length and diffused lens. Quite good brightness at 3V and can be driven with just a few milliamps.
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40109B level shifter IC (DIP-16) A CD40109BE quad level shifter IC in a 16-pin DIL package.
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2 x HN3A51F + 1 x HN3C51F + 2 x BC846C transistors for the Ultra-LD Mk.4 Power Amplifier module A pack of three dual transistors and two standard transistors: 2 x HN3A51F dual PNP transistors, 120V, 100mA in an SM6 package 1 x HN3C51F dual NPN transistors, 120V, 100mA in an SM6 package 2 x BC846C high-gain NPN transistors, 80V, 100mA in an SOT-23 package These transistors are required to build one Ultra-LD Mk.4 module. They have been discontinued and are now hard to get.
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SA156 plastic bobbin An SA156 plastic sewing machine bobbin which can be used for winding high-current air-cored inductors in the range of about 1-10µH. 6mm ID, 20mm OD, 10mm height.
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GP2Y0A41SK0F optical distance sensor (4-30cm) A GP2Y0A41SK0F distance sensor, as used in the Opto-Theremin project.
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TDA7052A 1.1W audio amplifier IC (DIP-8) A TDA7052A mono amplifier IC, as used in the Opto-Theremin project.
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Extra parts for the Dual-Channel Audio Delay / Stereo Echo & Reverb / Digital Effects Processor WM8731SEDS CODEC IC (TSSOP-28) and SMD capacitors (11 x 100nF, 1 x 10µF). Can be put towards building the following projects:
The PCB and programmed microcontrollers (to suit the specific project) are also required and these are available separately.
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MC1496BDG Balanced Modulator/Demodulator IC (SOIC-14) An MC1496BDG modulator/demodulator IC, as used in the Opto-Theremin project.
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Pack of three AD8038ARZ Video Amplifier ICs Three wide bandwidth video op amps, as used in the Wideband Active Differential Oscilloscope Probe project (SOIC-8 packages).
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Pair of BSS83 dual-gate SMD Mosfets These low-capacitance dual-gate Mosfets are used as the input buffers in the Wideband Active Differential Oscilloscope Probe. Unfortunately, they are no longer being manufactured and there is no direct replacement so we are making them available for people who wish to build this project.
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Three 7FB4561AB 4-digit 7-segment LED displays These are the displays used in the 2.5GHz 12-Digit High-Resolution Frequency Counter. The digits are 14mm high and coloured blue. They are wired with common cathodes. Efficiency is high with a useful drive current range of about 0.1-5mA per segment. They are sold in a set of three, as required for the High-Resolution Frequency Counter project.
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AOT10N60 High-voltage Mosfet for the 230VAC Fan Speed Controller This Mosfet is suitable for use in the Deluxe 230VAC Fan Speed Controller. Its ratings are: Maximum drain-source voltage: 700V Maximum continuous drain current: 10A Maximum on-resistance: <0.75Ω Maximum power dissipation: 250W Gate threshold voltage: 3.0-4.5V
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MCP2200-I/SO A Microchip MCP2200 USB-to-serial IC, as used in the USB/RS-232C Serial Interface project. Also used in the Deluxe GPS Timebase. This comes in a 20-pin SOIC surface-mounting package and is supplied in a cut section of anti-static tube.
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Complementary pair of logic-level Mosfets (CSD18534KCS/SPP15P10PL-H) Pack of two logic level Mosfets. Includes one CSD18534KCS N-channel and one SPP15P10PL-H P-channel type. These can be used to build the NiMH/Nicad Burp Battery Charger. The critical parameters are: CSD18534KCS: 60V, 73A (164A peak), 107W, 7.6mΩ @ 10V, 10.2mΩ @ 4.5V SPP15P10PL-H: -100V, 15A (60A peak), 128W, 140mΩ @ 10V, 190mΩ @ 4.5V
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IRS21850S High-Side Mosfet Driver Mosfet driver as used in the Automatic Car Headlight Controller. Please note that Jaycar are offering a full kit for this project, Cat No KC5524.
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SL32 10015 NTC thermistor NTC thermistor, as used in the Soft Starter, Soft Starter for Power Tools and Induction Motor Speed Controller.
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STGIPS30C60 30A IGBT bridge & 15mΩ shunt for the 1.5kW Induction Motor Speed Controller These parts can be used to build, upgrade or repair the 1.5kW Induction Motor Speed Controller. The main part is the STGIPS30C60 hybrid three-phase IGBT bridge module. The originally specified part is the STGIPS20K60 and this is rated for 18A continuous current and 40A peak. By comparison, the pin-compatible STGIPS30C60 is rated at 30A continuous, 60A peak. So this should make the speed controller more rugged and better able to withstand overload before the protection circuitry kicks in. We're also supplying the 15mΩ 6332 (2512) SMD shunt, rated at 3W. Note that if you want to use these parts to repair a damaged controller, chances are that IC2 (LM319; Jaycar ZL3319, Altronics Z2520) will almost certainly need replacing. It's also possible that some or all of the high-speed opto-couplers (OPTO1, 4N35 & OPTO2-3, HCPL2531) could be damaged so check them too.
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Omron G5V-1 or Hongfa HFD23/005 SPDT signal relay A small relay which can be used in the LF-HF Up-Converter and SiDRADIO projects.
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TCRT5000 Reflective Optical Sensor Sensor used in the Automatic Points Controller. More than one may be required.
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ISL9V5036P3 360V, 46A IGBT for the High-Energy Electronic Ignition System IGBT (TO-220) to suit the High-Energy Electronic Ignition. This is a relatively difficult part to get so we are offering it for constructors of the High-Energy Electronic Ignition System or Jacob's Ladder projects.
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TLE2022CP op amp A TL2022CP op amp in 8-pin DIP, as used in the CLASSiC-D Class-D amplifier.
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Pair of ZXCT1009 Current Shunt Monitor ICs for DCC Reverse Loop Controller project Two ZXCT1009FTA Shunt Monitor ICs (SOT-23 package) for the DCC Reverse Loop Controller/Block Switch project. Provided in anti-static plastic tape.
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3-pin JST plug to bare wires cable, 100mm 3-pin JST cable to bare wires, to suit either of the Tenda MP3 player modules.
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RF Coil Former with Adjustable Ferrite Core A coil former with ferrite slug. Can be used for the Planet Jupiter Receiver (three formers required). This is similar to SBK-71K but without the shield can. The Jaycar LF1227 set originally specified is no longer available. There are a few differences so some slight modifications need to be made in order to fit the new coil former on the PCB: 1) This former has five pins rather than two. The extra pins can be cut off or, where they will fit into an existing PCB mounting hole, used as tap connection points. 2) This former is slightly smaller so you will need to use 0.25mm diameter ECW rather than the 0.3mm diameter specified in the SiDRADIO parts list. The number of turns remains the same. 3) You may need to bend the pins slightly to fit them into the PCB mounting pads.
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ESP32 Arduino-compatible ARM processor board with WiFi and Bluetooth An ESP32 dual-core microcontroller board with WiFi and Bluetooth. It's similar to the ESP8266 but smaller, faster, with more I/Os, more advanced WiFi and also a Bluetooth transceiver. Can be programmed using the Arduino IDE. Note: this will be discontinued once we have sold our remaining stock.
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Tiny 1.8A buck step-down regulator module (MINI-360) A 15x9mm module which uses the MP2307DN synchronous stepdown regulator IC. Input is 4.75-23V, output is 1-17V at up to 1.8A continuous (3A peak). Efficiency up to 95%, switching frequency 340kHz, ripple 30mV (no load). Dropout voltage is around 1V. Output voltage is adjusted using a tiny SMD trimpot. The input and output DC connections are made via pads in the corner of the PCB.
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Strip of ten bright YELLOW 3216/1206 SMD LEDs Ten bright diffused yellow SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). 590-600nm, 50-100mCd @ 20mA, 120° viewing angle, Vf=2.2-2.8V @ 20mA. Note: this item will be discontinued once it has sold out.
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One ultra-bright PURPLE/UV 3216/1206 SMD LED One very bright purple/UV SMD LED in a 3216/1206 package (3.2 x 1.6mm). 390-410nm, 70-120mCd @ 20mA, Vf=3.0-3.6V @ 20mA.
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Strip of ten ultra-bright GREEN 2012/0805 SMD LEDs Ten very bright diffused green SMD LEDs in a 2012/0805 package (2.0 x 1.2mm). 525-535nm, 400-500mCd @ 20mA, 120-140° viewing angle, Vf=3.2-3.4V @ 20mA.
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Strip of ten ultra-bright YELLOW 2012/0805 SMD LEDs Ten very bright diffused yellow SMD LEDs in a 2012/0805 package (2.0 x 1.2mm). 17-215UYC/S530-A2/TRB: 588-590nm, 130-160mCd @ 20mA, 130° viewing angle, Vf=2.1-2.3V @ 20mA.
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Strip of ten ultra-bright AMBER 2012/0805 SMD LEDs Ten very bright diffused amber SMD LEDs in a 2012/0805 package (2.0 x 1.2mm). 17-215/S2C-CP2R1B/3T: 602-605nm, 150-200mCd @ 20mA, 130° viewing angle, Vf=2.0-2.2V @ 20mA.
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Strip of ten ultra-bright RED 2012/0805 SMD LEDs Ten very bright diffused red SMD LEDs in a 2012/0805 package (2.0 x 1.2mm). 620-625nm, 100-130mCd @ 20mA, 120° viewing angle, Vf=2.0-2.2V @ 20mA.
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Strip of ten ultra-bright BLUE 2012/0805 SMD LEDs Ten very bright diffused blue SMD LEDs in a 2012/0805 package (2.0 x 1.2mm). 465-475nm, 200-250mCd @ 20mA, 120-140° viewing angle, Vf=3.2-3.4V @ 20mA.
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Strip of ten high-brightness CYAN 2012/0805 SMD LEDs Ten bright cyan SMD LEDs in a 2012/0805 package (2.0 x 1.2mm). 475-480nm, 72-90mCd @ 20mA, 2.8-3.6V @ 20mA.
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Strip of ten high-brightness COOL WHITE 1W/100+ lumen 3528 SMD LEDs Ten very efficient, cool white SMD LEDs in a 3528 package (3.5 x 2.8 x 0.6mm). Part code: LATWT470RELZK Manufacturer: LG Dimensions: 3.5 x 2.8 x 0.6mm Forward current: 400mA (650mA peak) Maximum dissipation: 1460mW Operating temperature: -30 to 90°C Maximum junction temperature: 135°C Forward voltage: 3.05-3.65V @ 250mA Light output: 110-140lm @ 1W Luminous intensity: 23.5Cd @ 250mA Colour temperature: 7000-10000K CRI: 0.8 Viewing angle: 120°
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Pack of 10 high-brightness RGB LEDs, 3.5x2.7x1.9mm (SMD) Three bright LEDs in a single 3.5x2.7x1.9mm SMD package - blue, red & green LEDs with a common anode connection. Part code: SX-3528-RGB Dimensions: 3.5 x 2.7 x 1.9mm Package type: PLCC-4 (SMD) Wavelengths: 620-622nm (red), 520-523nm (green), 460-463nm (blue) Maximum current: 20mA/LED Forward voltage: 1.9-2.1V (red), 3.0-3.2V (green), 3.0-3.2V (blue) Brightness: 120-150mCd (red), 200-300mCd (green), 70-95mCd (blue) Pinout & footprint: http://www.siliconchip.com.au/Images/SX-3528-RGB.jpg
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Pack of 10 high-brightness RGB LEDs, 5x5x1.5mm (SMD) Three bright LEDs in a single 5x5x1.5mm SMD package - individual blue, red & green LEDs. Part code: SX-5050-RGB Dimensions: 5 x 5 x 1.5mm Package type: PLCC-6 (SMD) Wavelengths: 620-625nm (red), 520-530nm (green), 460-475nm (blue) Maximum current: 60mA/LED Forward voltage: 2.0-2.6V (red), 3.0-3.4V (green), 3.2-3.6V (blue) Pinout & footprint: http://www.siliconchip.com.au/Images/SX-5050-RGB.jpg
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5mm high efficiency diffused red LED A 5mm red LED with high efficiency and good diffusion. Lights up to a reasonable brightness with just 1mA, with a forward voltage of around 1.8V. Leads are slightly shorter than usual at 16mm for the anode and 15mm for the cathode. Our supplier claims 900-1200mCd @ 20mA, 250° viewing angle, 1.8-2.3V forward voltage and 620-640nm colour.
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2-pin 2.0mm JST plug to bare wires cable, 100mm 2-pin JST cable to bare wires, with a 2mm pin pitch.
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Small 4A boost step-up regulator module (XL6009) A 40x21mm module which uses the XL6009 (LM2577 equivalent) boost regulator IC. Input is 3.2-32V, output is 4-38V at up to 4A continuous. Efficiency up to 96%, switching frequency 400kHz. Output voltage is adjusted using a multi-turn trimpot. The input and output DC connections are made via pads in the corner of the PCB. Note that as with a typical boost regulator, the output voltage can not be lower than the input voltage.
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ADS1115-based 16-bit I²C ADC module with programmable gain amplifier A small module with an ADS1115 16-bit ADC, allowing you to read the voltage level at one of four analog inputs using the I²C digital interface. Runs off a 2-5V supply and samples up to 860 times per second. The on-board voltage reference and PGA allow input ranges from ±256mV to ±6.144V. For more information, see www.ti.com/product/ADS1115
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7A DC/DC Boost Converter module A small module (67 x 48 x 28mm) which can convert an input voltage of 8.5-50V DC to a higher output voltage of 10-60V DC at up to 7A. Maximum efficiency is stated as 96%. Peak output current is 12A and peak input current is 15A but the unit will overheat if operated at those levels continuously. The board has two 2-way terminal blocks for the input and output and two multi-turn trimpots to adjust the output voltage and current limit.
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Dual Horizontal PCB-mounting RCA sockets (white/red) [RCA-214] Dual horizontal PCB-mounting RCA sockets (white/red) with an RCA-214 footprint. This is not compatible with the RCA-210 footprint.
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TP5000-based 2A LiFePO4 cell charger module A small (26 x 18mm) module capable of charging a single LiFePO4 or Li-ion/LiPo cell from a 4.5-9V DC supply. It's supplied with a red/green LED which indicates the charger status and has a small heatsink glued to the underside to help with heat dissipation. By default, the module is set up for charging LiFePO4, with a 3.6V charge termination voltage. If you short the pair of empty pads near the BAT+ terminal then it will charge up to 4.2V, suitable for Li-ion and LiPo cells. If fitting the supplied LED, the flat side of the lens goes towards the component labelled R1.
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7A DC/DC Buck (Step-down) Converter module A small module (65 x 48 x 24mm) which can convert an input voltage of 5-40V DC to a lower output voltage of 1.25-35V DC at up to 7A. Maximum efficiency is over 90%. The peak output current is 9A. Note that forced air (fan) cooling is necessary for continuous operation at high currents (more than a few amps). The board has two 2-way terminal blocks for the input and output and two multi-turn trimpots to adjust the output voltage and current limit.
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Strip of ten high-brightness WHITE 3216/1206 SMD LEDs Ten bright white SMD LEDs in a 3216/1206 package (3.2 x 1.6mm). 5000-8000K, 200-300mCd @ 20mA, 3.0-3.6V @ 20mA.
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GY-91 MPU9250 + BMP280 9DOF/Temperature/Pressure breakout board A tiny breakout board with a BMP280 barometric pressure/altitude/temperature sensor plus an MPU9250 9DOF accelerometer/gyroscope/magnetometer module. Connects easily to an Arduino, Micromite, etc using the I²C bus via a 8-pin header.
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Small 3.5A step-down regulator module (XL4005, LM2596-based) A 43x21mm module which uses the LM2596 buck regulator IC and a toroidal inductor. Input is 4-38V, output is 1.25-32V at up to 3.5A continuous (or 4.5A with forced air cooling). Efficiency up to 96%, typically >90%. Output voltage is adjusted using a multi-turn trimpot. The input and output DC connections are made via pads in the corner of the PCB. Note that as with a typical buck regulator, the output voltage must be at least a couple of volts lower than the input voltage for proper regulation.
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2-pin JST 2.0mm PCB header A locking header which our Cat SC4323 cables can plug into.
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22µF 6.3V X7R ceramic through-hole capacitor A small 22µF ceramic capacitor with superior performance in a through-hole package, easily soldered and suitable for use with various Micromites.
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yes (44 available). Estimated dispatch time: up to 3 days
no. Estimated dispatch time: about two days
