Potentiometer with Raspberry Pi Pico

Wiring for the 10 kΩ potentiometer on the Raspberry Pi Pico (RP2040, 3.3 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.

Wiring

Check before you power it on

• Supply: 3.3 V from the 3V3(OUT) pin.

Test code (Arduino)

void setup() {
  Serial.begin(115200);
  analogReadResolution(12);
}

void loop() {
  long mv = (long)analogRead(26) * 3300L / 4095;  // OUT on GP26
  Serial.println(mv);
  delay(200);
}

Arduino board: rp2040:rp2040:rpipico. If the board is not found, hold the BOOTSEL button while plugging in the USB cable.

Questions

Which Raspberry Pi Pico pins do I use for the Potentiometer?

VCC → 3V3(OUT), OUT → GP26, GND → GND.

Does the Potentiometer work with the Raspberry Pi Pico at 3.3 V?

Yes: the Potentiometer runs at 3.3 V and the Raspberry Pi Pico uses 3.3 V signals, so no level shifting is needed.

Full Raspberry Pi Pico pinout · 10 kΩ potentiometer: all pins and data

The Potentiometer on other boards

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