Materials
The items used in this guide are listed in the table below.
| Item | Quantity | Source | Web page |
|---|---|---|---|
| Feather HUZZAH | 1 | Adafruit # 3212 | https://www.adafruit.com/product/3213 |
| Small breadboard | 1 | Adafruit # 64 | https://www.adafruit.com/product/64 |
| Magnetic contact switch | 2 | Adafruit # 375 | https://www.adafruit.com/product/375 |
| Sainsmart 2-channel relay module | 1 | Sainsmart or Amazon | Sainsmart store |
| Male/Male jumper | 6 | Adafruit # 1956 | https://www.adafruit.com/product/1956 |
| Female/Male jumper* | 8 | Adafruit # 824 | https://www.adafruit.com/product/824 |
| 10K ohm resistor | 2 | Adafruit # 2784 | https://www.adafruit.com/product/2784 |
| industrial double sided tape | 1 | Amazon | Gorilla Heavy Duty Mounting Tape |
| Power supply | 1 | Adafruit # 1995 | https://www.adafruit.com/product/1995 |
| 2 conductor wire | ?† | Amazon | 50' 22 gauge 2 conductor solid alarm wire |
| 6-1/2 x 2-3/4 piece of wood | 1 | Scrap lumber | Left over from other projects |
| 2-inch dry wall screw‡ | 4 | Home depot or other | To mount wood to the wall |
*The length of the female to female jumpers will vary with your installation. The link here is for 12-inch (300mm) jumpers.
†You will need enough wire to run a wire from the relay(s) to your garage door opener(s).
‡Depending on the surface in your garage where you want to mount your project, you might be able to use the double sided tape to mount rather than the screws.
