Sharp GP2Y0A41SK IR distance (4-30 cm) with ESP32

Supply 5 V Bus ANALOG Measures distance

Pins and ESP32 wiring

Pin	Role	ESP32 pin	Notes
VO	Analog output	D34	Higher voltage when closer (about 3 V at 4 cm). To an ADC pin (prefer ADC1: GPIO 32 to 39)
GND	Ground	GND
VCC	Power	VIN	Needs 5 V: use VIN

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

This module is sold for 5 V. Its outputs may be 5 V: use a level shifter or a voltage divider on ESP32 inputs.

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

void loop() {
  int mv = analogReadMilliVolts(34);  // VO on GPIO 34
  Serial.println(mv);
  delay(200);
}

Sharp GP2Y0A41SK0F datasheet, Terminal 1 Vo, 2 GND, 3 Vcc; supply 4.5 to 5.5 V; range 4 to 30 cm

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