I made another 2 stepper drivers:
Yesterday I made a new motherboard. The old 1 had a few design flaws in it. The new one is for 4 axis so I don’t need to build another one if a forth axis is added.
Circuit:
Pcb:

Partlist:
|
Name:
|
Value:
|
|---|---|
| R1, R2, R3, R4 | 4K7 |
| R5, R6, R7, R8, R9, R10, R11, R12 | 470R |
| R13, R14, R15, R16 | 330R |
| R17, R18, R19, R20 | 3K3 |
| C1 | 4700µF |
| C2, C3 | 100n |
| D1, D2, D3, D5 | 1N4004 |
| IC1 | ULN2803 |
| IC2 | 7805 |
| LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 |
LED groen 5mm |
| LED9, LED10, LED11n LED12 | LED rood 5mm |
| OK1, OK2, OK3 | PC849 |
| TR1 | Transformer 1.5VA 9-20V |
| X1 | 25p sub-d connector |
| X2, X3, X4, X5 | 3p printkroonsteentje |
| X6 | 5p printkroonsteentje |
| X10 | 2p printkroonsteentje 230V |

2 comments
Good job man please if you can send me pcb layout thanks
Author
You can download it above (Click on PCB layout)
Regards,
Stijn