| Component | No. | Cost | Source | Produced | Notes | SubTotal |
|---|---|---|---|---|---|---|
| Mini Breadboard | 5 | 1.196 | Ebay | China | £5.98 | |
| 555 Timer Chip | 10 | 0.185 | Ebay | China | £1.85 | |
| 9V Battery pack | 1 | ShrimpingIt surplus | China | Considering replacing with rechargeable LIPO battery | ||
| Jumper Wires | 40 | ShrimpingIt Surplus | ||||
| Capacitor 100μF | 1 | ShrimpingIt surplus | China | |||
| Resistor 47K Ohm | 1 | ShrimpingIt surplus | China | |||
| Resistor 470 Ohm | 1 | ShrimpingIt surplus | China | |||
| Resistor 220 Ohm | 2 | ShrimpingIt surplus | China | |||
| Resistor 100k Ohm | 1 | ShrimpingIt surplus | China |