budryerson
Troubleshooting TFLuna sensor
Hello—I'm using the example code "TFLI2C_simple.ino"; Arduino UNO; and a Benewake TF-Luna.
My issue is this: the only output is the setup print:
TFLI2C example code simplified 4 NOV 2021
No values coming out of the sensor. My question is this—I've got no red LED lit up on the TF-Luna; does this indicate that the sensor is broken? I'd obviously like to know whether I can skip more troubleshooting with the code and should instead just order another LIDAR sensor!
Much obliged—and thanks for providing all these helpful scripts and guides!
/* File Name: TFLI2C_simple.ino
* Developer: Bud Ryerson
* Date: 4 NOV 2021
* Version: 0.1.2
* Described: Simplified Arduino example sketch for the Benewake
* TF-Luna LiDAR sensor configured for the I2C interface
*/
#include <Arduino.h> // every sketch needs this
#include <Wire.h> // instantiate the Wire library
#include <TFLI2C.h> // TFLuna-I2C Library v.0.2.0
TFLI2C tflI2C;
int16_t tfDist; // distance in centimeters
int16_t tfAddr = TFL_DEF_ADR; // use this default I2C address or
// set variable to your own value
void setup()
{
Serial.begin( 115200); // initialize serial port
Wire.begin(); // initialize Wire library
Serial.println( "TFLI2C example code simplified"); // say "Hello!"
Serial.println( "4 NOV 2021"); // and add date
}
void loop()
{
if( tflI2C.getData( tfDist, tfAddr)) // If read okay...
{
Serial.print("Dist: ");
Serial.println(tfDist); // print the data...
}
else tflI2C.printStatus(); // else, print error.
delay( 50);
}
Pins: 1 -> 5v, 2->SDA, 3-> SCL (switching these doesn't change anything), 4 -> GND, 5 -> GND
You wrote: "I've got no red LED lit up on the TF-Luna; does this indicate that the sensor is broken?" I think that the answer might be, "Yes." Check your power for proper voltage and polarity and check your connections. The device has to have a visible red glow. My apologies for taking so long to answer.
