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laforestlabs
KiCad PCB automation toolkit — placement, routing, scoring, and experiment management
| Reference | Value | Description |
|---|---|---|
| U1 | 78M05 | LCSC C347278 |
| U2 | A4988 | LCSC C38437 |
| C1,C6 | 10uF | Bulk filter on 12V input,VMOT bulk decoupling |
| C2,C4,C5,C7 | 0.1uF | 78M05 output cap,Decoupling on 12V input,VDD decoupling,VMOT high-freq decoupling |
| C3 | 0.33uF | 78M05 input cap |
| C8,C10 | 100nF | Charge pump CP1-CP2,VREG decoupling |
| C9 | 0.22uF | VCP output cap to VMOT |
| D1 | SS14 | LCSC C2837270 |
| J1 | 12V Screw Terminal | LCSC C8404 |
| J2 | Control Header | STEP, DIR, ENABLE, GND |
| J3 | Motor Connector | 2A, 2B, 1A, 1B stepper coils |
| R1,R2,R6-R8 | 10k | MS1 pull-up,MS2 pull-up,MS3 pull-up,VREF divider bottom (VREF to GND),VREF divider top (5V to VREF) |
| R3 | 100k | ROSC timing resistor |
| R4,R5 | 0.2Ω | Sense resistor SENSE1,Sense resistor SENSE2 |
| S1 | 3-pos DIP Switch | LCSC C50844 |