I designed the pcb for the stepper driver. It uses an L297 and L298 ic. The circuit I used:
Partlist:
|
Name:
|
Value:
|
|---|---|
| R1, R2, R3, R4 | 1R 3W |
| R5 | 100R 5W |
| R8, R9 | 10K |
| R10 | 25K trim potmeter |
| R11, R12 | 22K |
| C1 | 1000µF 50V |
| C2, C3, C4, C5, C6, C7, C8 | 100nF |
| C9 | 3,3nF |
| D1, D2, D3, D4, D5, D6, D7, D8 | MUR440RL |
| IC1 | 7805 |
| IC2 | L297 |
| IC3 | L298 |
| J1, J2 | AMP vlakstekker |
| J4 | 3p pin header |
| X1 | 3p printkroonsteen |
| X2 | 5p printkroonsteen |
| X3 | fan connector |
| F1 | 4A fuse + holder |
| M1 | 40mm 5V Fan (optional) |
Dutch 
