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Modem/Router Watchdog kit
A basically complete kit for the Modem/ Watchdog. It includes everything you need to build the Watchdog, assuming the rectified supply voltage is close to 12V DC.
If your voltage is significantly different from that, you might need to substitute the relay or add a resistor.
The Raspberry Pi Pico W is included but is not programmed; you can program itself using a computer, the free software downloaded from our website and a suitable USB cable.
Note: the photo shows the assembled kit.
| Cat No SC6827. Price: AUD $35.00 1 |
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In stock:  yes (4 available). Estimated dispatch time: 1-3 days | | Related to: Project: Modem/Router Watchdog (November 2023 [print issue] [online issue]) |
Other items relevant to this project: |
Kit parts list
Connectors | 1 × PCB-mount DC barrel socket, 2.1mm ID |
| 1 × 20-pin male header (2.54mm pitch) |
| 2 × 2-way vertical polarised header with matching plug & pins (2.54mm pitch) |
Semiconductors | 1 × 7805 5V 1A linear regulator (TO-220) |
| 1 × BC547B 45V 100mA NPN transistor (TO-92) |
| 2 × 1N4004 400V 1A diode (DO-41) |
| 1 × W04M bridge rectifier diode |
Through-hole Capacitors | 1 × 220µF 63V 105° electrolytic (5mm pitch) |
| 2 × 100nF 50V X7R (5mm pitch) |
Through-hole Resistors | 1 × 470Ω ±1% ¼W |
| 2 × 10Ω ±5% 1W |
Cable & Hardware | 4 × 10mm Nylon M3 spacer |
| 6 × 6mm metal panhead M3 screw |
| 2 × 6mm Nylon panhead M3 screw |
| 1 × 1m USB to 2.1mm ID barrel plug cable |
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