Custom PCB
Due to a design issue, Rev.0 is retired. The 12v input doesn't have a connection to the motor nor the ULN2003. Also, the ground trace is too small and runs through 2 vias. Image is just for historical reference.
R1-R3 : Button Resistors
R4 : Pulldown, Button (10K)
R5 : LED, Current Limiting
F1 : 2A
F2 : 1A
IC1 : ULN2003
C1 : Ceramic Capacitor
Q1 : N-Channel MOSFET
J1 : Motor Connection
J2 : WS2812 Connection
J3-J4 : D1 Mini Connection
J5 : 12v In
J6 : 12v LED Strip
5v Buck : 5v Buck Regulator (Feeds D1 and J2)
5v Select : Open Isolates Motor Driver 12v from D1 5v
: Closed Powers From D1 5v (USB)
F1 : 2A (12v) F2 : 1A (to 5v regulator)
C1 : Ceramic Capacitor
R1-R3 : Button Resistors R4 : Pulldown, Button (10K) R5 : LED, Current Limiting (Connects to D4) R6 : PWM Pulldown (10K) R7 : Brake Pulldown (10k)
J1 : Motor Connection J2 : WS2812 Connection (Only use if using 12v or or high capcacity 5v supply) J3 : 8p Female Header (D1 connection) J4 : 6p Femail Header (D1 connection) J5 : 12v In J6 : 12v LED Strip J7 : NEMA Stepper
Q1 : N-Channel MOSFET Q2 : N-Channel MOSFET
Setup:
WARNING: The correct jumper position MUST be set BEFORE CONNECTING POWER!!! Damage will occur if 12v is applied with the jumper in the 5v position.
5v : DO NOT install the 5v buck regulator. Set jumper to 5v position.
12V : Install the 5v buck regulator. Set jumper to the 12v position.