| Quantity | Component name | |
| 1 | × | Digispark ATTiny85-based Arduino-compatible board |
| 1 | × | 5V step-up voltage regulator |
| 4 | × | High-power IR LED |
| 4 | × | PN2222 Transistor |
| 1 | × | Momentary push-button <a target="_blank" rel="noopener noreferrer" href="http://www.adafruit.com/products/560?gclid=CIDg_ambusUCFVYXHwodXhgAjg">http://www.adafruit.com/products/560?gclid=CIDg_ambusUCFVYXHwodXhgAjg</a> |
dougal