BoardPilotMOSFET switch module (IRF520) with ESP32
Supply 3.3-5 V
Bus GPIO
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| SIG | Input (the ESP32 drives it) | D25 | IRF520 only half-opens at 3.3 V: fine for LEDs, weak for motors. A logic-level MOSFET is better |
| VCC | Not wired to the ESP32 | — | Not needed on most versions |
| GND | Ground | GND | |
| VIN | Not wired to the ESP32 | — | Load supply + (up to 24 V) |
| V+ | Not wired to the ESP32 | — | To the load + |
| V- | Not wired to the ESP32 | — | To the load - |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
Starter code (Arduino)
void setup() { pinMode(25, OUTPUT); } // SIG
void loop() {
digitalWrite(25, HIGH);
delay(500);
digitalWrite(25, LOW);
delay(500);
}Sources
- Vishay IRF520 datasheet, Gate threshold 2 to 4 V: not fully on at 3.3 V
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.