Small kit I designed for my brother, may be interesting to some. Designed using KiCAD 5.
| Designator | Value | Package |
|---|---|---|
| R13 - R16 | 1kΩ | Axial DIN0207 |
| R2, R3, R5 - R12 | 10kΩ | Axial DIN0207 |
| R1, R4 | 4.7MΩ | Axial DIN0207 |
| D1 - D7 | LED | 5mm |
| Q1, Q3 | BC557 | TO-92 |
| Q2, Q4, Q5 | BC647 | TO-92 |
| C1 | 0.1μF | Disc D5.0mm W2.5mm P2.50mm |
| C2 | 1μF | Radial D5.0mm P2.5mm |
| SW1 | Tact Switch | 6mm |
| U1 | NE555 | DIP-8 (Optional Socket) |
| U2 | CD4017 | DIP-16 (Optional Socket) |
| BT1 | Powersource (3V-9V) |
R4 and R1 can be changed to alter timings.