Motor Driver Design Guide

flux

Short answer: No. Based on knowledge base guidance for low-side MOSFET motor drivers (flyback diode across the motor; gate pulldown to source), your current nets are mis-assigned.
What’s wrong right now
  1. Q1 source is on Net 2 with J2:P1 (battery side). For a low-side switch, the source must go to battery minus (ground).
  2. The 10 kΩ pulldown R1 is currently gate-to-battery-plus (Net 3 ↔ Net 2). It must be gate-to-source (gate-to-ground).
  3. The flyback diode is effectively referenced to the wrong battery rail because Motor+ is tied to the net with J2:P2. Per knowledge base guidance, the diode cathode must be on the motor’s positive node, which is the same node as battery plus.
Correct net mapping to fix it
  • BAT_PLUS: J2:P1, J1:P1 (Motor+), D1:K
  • BAT_MINUS (GND): J2:P2, Q1:S, R1:P1
  • MOTOR_MINUS: J1:P2, Q1:D, D1:A
  • GATE: Q1:G, R1:P2
  • External ESP32: connect its GPIO to GATE and its GND to BAT_MINUS.
Notes
  • This places the flyback diode across the motor with cathode at Motor+/BAT_PLUS and anode at Motor−, as the knowledge base recommends.
  • Gate pulldown is from gate to source (ground), also per knowledge base guidance.
  • If you intend J2:P2 to be battery plus instead, we can keep the pin numbering but must reassign which pin is “+” vs “−” to match the mapping above.
Want me to apply these corrections and wire it now?
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D1
J1
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