Push button with ESP32-S3-DevKitC-1

Wiring for the Push button on the ESP32-S3-DevKitC-1 (ESP32-S3, 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

Push button pin	Role	ESP32-S3-DevKitC-1 pin	Notes
1	Output from the part	4	To a GPIO; use INPUT_PULLUP in code
2	Ground	G

Check before you power it on

Test code (Arduino)

void setup() {
  Serial.begin(115200);
  pinMode(4, INPUT_PULLUP);  // pressed = LOW
}

void loop() {
  Serial.println(digitalRead(4) == LOW ? "pressed" : "released");
  delay(100);
}

Arduino board: esp32:esp32:esp32s3. Use the port labelled UART. If uploading does not start, hold BOOT, press and release RESET, then release BOOT.

Questions

Which ESP32-S3-DevKitC-1 pins do I use for the Push button?

1 → 4, 2 → G.

Does the Push button work with the ESP32-S3-DevKitC-1 at 3.3 V?

Yes: the Push button runs at 3.3 V and the ESP32-S3-DevKitC-1 uses 3.3 V signals, so no level shifting is needed.

BoardPilot checks this wiring in 3D as you build it, and finds crossed or missing wires on the real board.

Download BoardPilot

Full ESP32-S3-DevKitC-1 pinout · Push button: all pins and data

The Push button on other boards

ESP32 DevKit Arduino Mega 2560 R3 Arduino Nano Arduino Uno R3 WeAct Black Pill STM32F411CE ESP32-C3-DevKitM-1 Nordic nRF52840 DK NUCLEO-F401RE Raspberry Pi Pico 2 Raspberry Pi Pico W Raspberry Pi Pico Teensy 4.1

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