Benewake TF-Luna LiDAR (I2C mode) with ESP32

Supply 5 V Bus I2C I2C address 0x10 Measures distance

Pins and ESP32 wiring

Pin	Role	ESP32 pin	Notes
5V	Power	VIN	Pin 1. Needs 5 V: use VIN
SDA	I2C data (SDA)	D21	Pin 2
SCL	I2C clock (SCL)	D22	Pin 3
GND	Ground	GND	Pin 4
CFG	Not wired to the ESP32	—	Pin 5. Tie to GND before power-up to select I2C
MUX	Output (the part drives it)	D25	Pin 6, on/off output. Optional

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.

Starter code (Arduino)

#include <Wire.h>

void setup() {
  Serial.begin(115200);
  Wire.begin(21, 22);  // SDA = GPIO 21, SCL = GPIO 22
  Wire.beginTransmission(0x10);
  bool found = Wire.endTransmission() == 0;
  Serial.println(found ? "Benewake TF-Luna LiDAR (I2C mode) found at 0x10" : "Not found: check power, GND and SDA/SCL");
}

void loop() {}

Sources

Benewake TF-Luna product manual, Pin 5 to GND selects I2C; default I2C address 0x10
Benewake TF-Luna product manual, Supply 3.7 to 5.2 V; I/O level LVTTL 3.3 V

Try it in 3D in BoardPilot

BoardPilot Part data (JSON)

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

Benewake TF-Luna LiDAR (I2C mode) with ESP32

Pins and ESP32 wiring

Starter code (Arduino)

Sources

Try it in 3D in BoardPilot

Related parts