CNC drill/mill machine V2 – Electronics Part – Update

I made another 2 stepper drivers:stappenmotorsturingen

 

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:

schema

 

Pcb:

pcb

PCB layout

 

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

 

mobo

mobo

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