- Add LM7805 (TO-220) with input/output caps to step 12V→5V for ESP32 VIN
- Add 10K pull-down resistors on D5/LIM_A and D4/LIM_C limit switch GPIOs
- Add 100uF electrolytic decoupling capacitor on A4988 VMOT
- Rewire A4988 ~ENABLE from GND to ESP32 D18 via MOTOR_EN net label
Remove all 60 point-to-point wires and 11 junctions. Replace with:
- 13 local power symbols (+3.3V, +12V, GND) at each power pin
- 10 net labels (STEP, DIR, LIM_A, LIM_C, MOTOR_CTRL) for signals
- 37 short stub wires connecting pins to labels/power symbols
- 4 direct wires for A4988 motor outputs to stepper connector
Electrical connectivity is preserved. No component positions changed.
Shift all 30 pins uniformly by +5.765mm to place bottom pins at
Y=37.2, exactly 5.8mm from the silkscreen bottom line. Adjust
silkscreen, fab, and courtyard bottom edges to Y=43/43.1. Pins
maintain their relative 2.54mm spacing.
Stretch bottom boundary from Y=37.235 to Y=43.92 so the footprint
spans 51mm from antenna top to USB-C end. Update silkscreen,
courtyard, and fab outlines accordingly. Also fix broken right-side
silkscreen line endpoint.
Move pin columns from 22.86mm to 25.4mm X spacing. Shift all pins
up by 4.125mm so bottom pins sit 5.8mm from the footprint bottom
boundary. Update silkscreen, courtyard, and fab outlines to match.
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