Replace THT resistor footprints with 0805 SMD, assign 0805 caps for
small values, 1206 for 22uF bulk caps, SMD electrolytic for C3, Bourns
SRR1260 for L1, and QFN-20 for U1 TPS61088.
Remove the L7805 linear regulator (12V→5V) and its input/output caps,
replacing it with a TPS61088 boost converter circuit (5V→12V) for the
A4988 stepper driver. The ESP32 is now powered directly from the 5V
input rail. Includes integration script and project sym-lib-table for
the custom TPS61088 symbol library.
- Move regulator section labels (U1, C1, C2) to non-overlapping positions
- Hide redundant A4988 value text and R1/R2 GND value text
- Shift +3.3V, +12V, and GND power labels for better spacing
- Move C3, R1, R2 reference/value text away from nearby labels
- 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.
0xWheatyz
