Silicon ChipOuter Back Cover - July 2021 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Software: too many bugs, too many updates
  4. Mailbag
  5. Feature: The 2020 mission to Mars by Dr David Maddison
  6. Project: 20A DC Motor Speed Controller by John Clarke
  7. Feature: How USB Power Delivery (USB-PD) works by Andrew Levido
  8. Feature: El Cheapo Modules: USB-PD chargers by Jim Rowe
  9. Project: Model Railway Level Crossing by Les Kerr
  10. Circuit Notebook: Coded door buzzer by Benabadji Mohammed Salim
  11. Circuit Notebook: Adding shuffle feature to low-cost MP3 player module by Les Kerr
  12. Circuit Notebook: DIY pulse oximeter by Bera Somnath
  13. Project: Silicon Labs-based FM/AM/SW Digital Radio by Charles Kosina
  14. Review: Tecsun PL-990 radio receiver by Ross Tester
  15. Project: Advanced GPS Computer – Part 2 by Tim Blythman
  16. Serviceman's Log: I’ve repaired planes before, but never tanks by Dave Thompson
  17. Vintage Radio: The Rowe AMI JAL-200 jukebox by Jim Greig
  18. PartShop
  19. Product Showcase
  20. Ask Silicon Chip
  21. Market Centre
  22. Advertising Index
  23. Notes & Errata: Advanced GPS Computer, June 2021; Mini Arcade Pong, June 2021; Refined Full-Wave Motor Speed Controller, April 2021; USB Flexitimer, June 2018
  24. Outer Back Cover

This is only a preview of the July 2021 issue of Silicon Chip.

You can view 0 of the 112 pages in the full issue.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Items relevant to "20A DC Motor Speed Controller":
  • 20A DC Motor Speed Controller PCB [11006211] (AUD $7.50)
  • PIC16F1459-I/P programmed for the 20A DC Motor Speed Controller [1100621A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Firmware and source code for the 20A DC Motor Speed Controller [1100621A] (Software, Free)
  • 20A DC Motor Speed Controller PCB pattern (PDF download) [11006211] (Free)
Articles in this series:
  • The History of USB (June 2021)
  • How USB Power Delivery (USB-PD) works (July 2021)
Articles in this series:
  • El Cheapo Modules From Asia - Part 1 (October 2016)
  • El Cheapo Modules From Asia - Part 2 (December 2016)
  • El Cheapo Modules From Asia - Part 3 (January 2017)
  • El Cheapo Modules from Asia - Part 4 (February 2017)
  • El Cheapo Modules, Part 5: LCD module with I²C (March 2017)
  • El Cheapo Modules, Part 6: Direct Digital Synthesiser (April 2017)
  • El Cheapo Modules, Part 7: LED Matrix displays (June 2017)
  • El Cheapo Modules: Li-ion & LiPo Chargers (August 2017)
  • El Cheapo modules Part 9: AD9850 DDS module (September 2017)
  • El Cheapo Modules Part 10: GPS receivers (October 2017)
  • El Cheapo Modules 11: Pressure/Temperature Sensors (December 2017)
  • El Cheapo Modules 12: 2.4GHz Wireless Data Modules (January 2018)
  • El Cheapo Modules 13: sensing motion and moisture (February 2018)
  • El Cheapo Modules 14: Logarithmic RF Detector (March 2018)
  • El Cheapo Modules 16: 35-4400MHz frequency generator (May 2018)
  • El Cheapo Modules 17: 4GHz digital attenuator (June 2018)
  • El Cheapo: 500MHz frequency counter and preamp (July 2018)
  • El Cheapo modules Part 19 – Arduino NFC Shield (September 2018)
  • El cheapo modules, part 20: two tiny compass modules (November 2018)
  • El cheapo modules, part 21: stamp-sized audio player (December 2018)
  • El Cheapo Modules 22: Stepper Motor Drivers (February 2019)
  • El Cheapo Modules 23: Galvanic Skin Response (March 2019)
  • El Cheapo Modules: Class D amplifier modules (May 2019)
  • El Cheapo Modules: Long Range (LoRa) Transceivers (June 2019)
  • El Cheapo Modules: AD584 Precision Voltage References (July 2019)
  • Three I-O Expanders to give you more control! (November 2019)
  • El Cheapo modules: “Intelligent” 8x8 RGB LED Matrix (January 2020)
  • El Cheapo modules: 8-channel USB Logic Analyser (February 2020)
  • New w-i-d-e-b-a-n-d RTL-SDR modules (May 2020)
  • New w-i-d-e-b-a-n-d RTL-SDR modules, Part 2 (June 2020)
  • El Cheapo Modules: Mini Digital Volt/Amp Panel Meters (December 2020)
  • El Cheapo Modules: Mini Digital AC Panel Meters (January 2021)
  • El Cheapo Modules: LCR-T4 Digital Multi-Tester (February 2021)
  • El Cheapo Modules: USB-PD chargers (July 2021)
  • El Cheapo Modules: USB-PD Triggers (August 2021)
  • El Cheapo Modules: 3.8GHz Digital Attenuator (October 2021)
  • El Cheapo Modules: 6GHz Digital Attenuator (November 2021)
  • El Cheapo Modules: 35MHz-4.4GHz Signal Generator (December 2021)
  • El Cheapo Modules: LTDZ Spectrum Analyser (January 2022)
  • Low-noise HF-UHF Amplifiers (February 2022)
  • A Gesture Recognition Module (March 2022)
  • Air Quality Sensors (May 2022)
  • MOS Air Quality Sensors (June 2022)
  • PAS CO2 Air Quality Sensor (July 2022)
Items relevant to "Model Railway Level Crossing":
  • Model Railway Level Crossing PCB [09108211] (AUD $5.00)
  • Pair of PIC12F617-I/P chips for the Model Railway Level Crossing [0910821A/B/C.HEX] (Programmed Microcontroller, AUD $15.00)
  • ISD1820-based voice recording and playback module (Component, AUD $7.50)
  • Firmware, source code and sound recording for the Model Railway Level Crossing [0910211A-C] (Software, Free)
  • Model Railway Level Crossing PCB pattern (PDF download) [09108211] (Free)
  • Mechanical diagrams and label artwork for the Railway Level Crossing (PDF Download) (Panel Artwork, Free)
  • PIC12F617-I/P programmed for the Model Railway Level Crossing [0910821A.HEX] (Source component, AUD $10.00)
  • PIC12F617-I/P programmed for the Model Railway Level Crossing [0910821B.HEX] (Source component, AUD $10.00)
  • PIC12F617-I/P programmed for the Model Railway Level Crossing [0910821C.HEX] (Source component, AUD $10.00)
Videos relevant to "Model Railway Level Crossing":
  • Level Crossing
Items relevant to "Coded door buzzer":
  • Firmware for the Coded Door Buzzer (Software, Free)
Items relevant to "Adding shuffle feature to low-cost MP3 player module":
  • Firmware for adding a shuffle feature to a low-cost MP3 player module (Software, Free)
Items relevant to "DIY pulse oximeter":
  • Firmware for the DIY pulse oximeter (Software, Free)
Items relevant to "Silicon Labs-based FM/AM/SW Digital Radio":
  • SiLabs FM/AM/SW Digital Radio PCB [CSE210301C] (AUD $7.50)
  • ATmega328P programmed with the firmware for the SiLabs FM/AM/SW Digital Radio [CSE210301.HEX] (Programmed Microcontroller, AUD $10.00)
  • Pulse-type rotary encoder with pushbutton and 18t spline shaft (Component, AUD $3.00)
  • Si4732-A10 AM/FM/SW/LW/RDS Radio Receiver IC (Component, AUD $20.00)
  • Firmware and source code for the SiLabe FM-AM-SW Digital Radio [CSE210301.HEX] (Software, Free)
  • SiLabs FM/AM/SW Digital Radio PCB pattern (PDF download) [CSE210301C] (Free)
  • Drilling/cutting diagrams and front panel artwork for the SiLabs-based FM-AM-SW Digital Radio (Free)
Items relevant to "Advanced GPS Computer – Part 2":
  • Advanced GPS Computer PCB [05102211] (AUD $7.50)
  • PIC32MX170F256B-50I/SP programmed for the Advanced GPS Computer [0510221A.hex] (Programmed Microcontroller, AUD $15.00)
  • VK2828U7G5LF TTL GPS/GLONASS/GALILEO module with antenna and cable (Component, AUD $25.00)
  • DS3231 real-time clock IC (SOIC-16) (Component, AUD $7.50)
  • MCP4251-502E/P dual 5kΩ digital potentiometer (Component, AUD $3.00)
  • Micromite LCD BackPack V3 complete kit (Component, AUD $75.00)
  • Matte/Gloss Black UB3 Lid for Advanced GPS Computer (BackPack V3) or Pico BackPack (PCB, AUD $5.00)
  • Firmware for the Advanced GPS Computer [0510221A.HEX] (Software, Free)
  • Advanced GPS Computer PCB pattern (PDF download) [05102211] (Free)
  • Advanced GPS Computer box cutting diagram and lid dimensions (Panel Artwork, Free)
Articles in this series:
  • Advanced GPS Computer - Part 1 (June 2021)
  • Advanced GPS Computer – Part 2 (July 2021)

Purchase a printed copy of this issue for $10.00.

“Setting the standard for Quality & Value” Established 1930 ’ CHOICE! THE INDUSTRY S Metal Working Sheet Metal Fabrication Digital Angle Rule • • • • 180mm blade length 360º range Stainless steel Quick lock system 38.50 66 Order Code: F100 RSP-500 Pneumatic Roller Seat • • • • 380-500 seat height Ø300mm padded seat 360º swivel wheels Moulded tool tray • • • • • German design & technology 200mm stone & 225mm hone wheel 120rpm grinding stone speed 120W, 240V motor Includes straight edge jig, setting gauge & honing paste 77 X8 - Industrial Bench Grinder • 200mm wheels • Fine/coarse grit • 1hp, 240V motor 220 ALL & THIS E R MO & TORE IN S INE ONL - STEVE O EASY T USE Order Code: G159 236.50 ONLINE OR INSTORE! 132 $ bts 900x - Belt & Disc Linisher Sander OS-58 - Vertical Oscillating Bench Bobbin Sander 100 x 915mm belt Ø150mm disc Tilting table & mitre guide 370W 240V motor • • • • 20 - 140 Amps Thermal overload protection Includes 2.5m arc leads 15% <at> 140A duty cycle 240V / 10 amp 319 $ UB-100 Workshop Bar Bender • • • • BD-325 - Medium-Duty Bench Drill Flat: 100 x 5mm Square: 16 x 16mm Round: Ø18mm dia. Includes additional bending plates • • • • • Order Code: B043 16mm drill capacity 2MT spindle 12 spindle speeds Swivel & tilt table 1hp, 240V motor Order Code: D590 363 385 $ www.machineryhouse.com.au/signup 1/2", 3/4", 1", 1-1/2", 2" & 3" 370 x 290mm cast iron table Rotating & oscillating 450W / 240V motor Order Code: W843 275 242 SC0721 121 • • • • Ratchet action jaw lock alignment Combination 2 or 3 jaw type system Reversible jaws (Internal or External) Includes 3 x 100mm & 3 x 175mm legs Includes a blow mould case Order Code: P005 $ VIPER™ ARC 140 - DC TIG & MMA (ARC) Inverter Welder $70 FREE • • • • • Order Code: L105 $ UNIQUE PROMO CODE MGP-6R Ratcheting Gear Puller Set $ Order Code: W165 Staff Member 99 $ Order Code: N001 FULL ON CAST IRBASE & Y D O B 3-13mm or 1/8"-1/2" CBN grinding wheel Split point 80W, 240V motor Order Code: D070 • 130 piece kit for sheet aluminium or steel Includes: • Aluminium rivet nut inserts: M5, M6, M8, M10 - (10 of each size) • Aluminium blind rivets: Ø3.2, Ø4.0, Ø4.8, Ø6.4mm (20 of each size) • Mandrel spanner & blow mould case $ • • • • • • • • • RNB40 - Nut & Blind Riveter Set $ Order Code: W859 $ 25 piece set Precision ground flutes HSS M2 bright finish Range: 1~13mm 0.5mm increments 99 • 40 x 40 x 1mm mild steel capacity • Easy to use with comfortable hand grip 55 EDBD-13 Drill Sharpener $ PN-1 Portable Hand Notcher Order Code: S182 77 Order Code: D1272 88 $ TiGer 2000S - Wetstone Grinder • • • • • cold chisels pin punches tapered punches centre punch $ Metric Precision HSS Drill Set $ Order Code: A360 x x x x Order Code: P364 24.20 Order Code: D1071 55 5 4 4 1 $ 3 piece set For drilling thin material HSS M2 grade 4-12mm x 1mm steps 6-20mm x 2mm steps 6-30mm x 2mm steps $ • • • • Order Code: P365 HSS Sheet Metal Step Drill Set $ COMPETITIVE *DELIVERED Simple & Quick Online Freight Rate Check! FREIGHT RATES! TO YOUR DOOR *Remote areas may require depot collection in your town DISCOUNT VOUCHERS VIEW AND PURCHASE THESE ITEMS ONLINE AT www.machineryhouse.com.au/SC0721 Measuring Equipment Machine Tool Accessories Punch & Cold Chisel Set 14 Piece OM RED FR E FACTU MANU RADE CHROM HI-G DIUM STEEL VANA $ • • • • • • Cutting Tools • Ø3, 4, 5, 6, 7, 8mm • 150mm length DES INCLU RY BATTE Order Code: M739 Lifting Handling Pin Punch Set - 6 Piece • 200mm / 8" • Metric, inch & fraction • 4-way measuring $ • 200mm hardened and tempered files • Second cut: Flat, 1/2 Round, Round, Square, Triangular • Includes carry case Workshop & Automotive DCE-8 - Digital Caliper Order Code: M970 EF-5S - Engineers Files, 5 Piece Set Wood Working NSW (02) 9890 9111 QLD (07) 3715 2200 1/2 Windsor Rd, Northmead 625 Boundary Rd, Coopers Plains VIC (03) 9212 4422 4 Abbotts Rd, Dandenong WA (08) 9373 9999 11 Valentine Street Kewdale Specifications & Prices are subject to change without notification. All prices include GST and valid until 26-07-21 04_SC_280621 CNC Machinery