MOSFET switch module (dual AOD4184) with ESP32

Supply 3.3-5 V Bus GPIO

Pins and ESP32 wiring

Pin	Role	ESP32 pin	Notes
PWM	Input (the ESP32 drives it)	D25	Pin order varies between boards: match by the printed label. Trigger / PWM. HIGH = load on
GND	Ground	GND
VIN+	Not wired to the ESP32	—	Load supply + 5 to 36 V
VIN-	Not wired to the ESP32	—	Load supply -
OUT+	Not wired to the ESP32	—	To the load +
OUT-	Not wired to the ESP32	—	To the load -. Add a flyback diode for motors and coils

Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.

void setup() { pinMode(25, OUTPUT); }  // PWM

void loop() {
  digitalWrite(25, HIGH);
  delay(500);
  digitalWrite(25, LOW);
  delay(500);
}

Alpha & Omega AOD4184A datasheet, VGS(th) 1.5 to 2.5 V; RDS(on) specified at VGS 4.5 V and 10 V

Part data: CC BY 4.0, free to reuse with credit to BoardPilot.