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Hey Renato, I am getting a "BLE_DEVICE_ID" not declared error with stock code.

I searched for it, and found some lower case, so changed those to upper case, and it solved the problem. Should that be a problem? Maybe only a problem with Arduino IDE?

Examples:
char BLE_DEVICE_ID[12]; // was char ble_device_id[12];

sprintf(BLE_DEVICE_ID, "%s-%04X", BLE_DEVICE_ID_PREFIX, chip); // was sprintf(ble_device_id, "%s-%04X", BLE_DEVICE_ID_PREFIX, chip);

NimBLEDevice::init(BLE_DEVICE_ID); // was NimBLEDevice::init(ble_device_id);

For a newly configured device, the Undefined value needs to be managed properly: until there is a value in kCustomOBDBTLEPeripheral, the script will fail

Small issue but critical for new setups

Hello again :)

Lets say I wanted to add a high speed channel of data, into HLT - labeled "Spark Knock", which updates as fast as RPM, I already have this data coming into your ESP32 code and displayed on a screen, so no problems there. How would I go about doing that? (the right way).

I could probably fumble through the code and get it working, one way or another, but I would prefer to take an existing unused channel, rename everything, and see it in the HLT data file. What would be even better is if I could add or "hijack" and existing graphic on the overlaid video.

What do you think?

Inspired by https://github.com/MagnusThome/RejsaRubberTrac but using a single read and not a matrix with device, for example a MLX90614

A Simple sketch is

#include <Wire.h>
#include <Adafruit_MLX90614.h>

Adafruit_MLX90614 mlx = Adafruit_MLX90614();

void setup()
{
  Serial.begin(115200);
  mlx.begin();
  Serial.println("ObjTemp AmbTemp");
}

void loop()
{
  Serial.print(mlx.readObjectTempC());
  Serial.print(" ");
  Serial.print(mlx.readAmbientTempC());
  Serial.println();
  delay(100);
}

Other libraries

• https://github.com/sparkfun/SparkFun_MLX90614_Arduino_Library
• https://github.com/jfitter/MLX90614

Issues encountered so far

• distance is an issue
• aperture of the sensor is pretty wide, picking up a lot of background radiation
• you need to manually rewrite the I2C address for each device (see https://learn.sparkfun.com/tutorials/mlx90614-ir-thermometer-hookup-guide/all)

Inspired by the good work at https://github.com/MagnusThome/RejsaRubberTrac

Check https://www.ducati.ms/threads/canbus-data-on-you-android-device-via-bluetooth.337705/page-3 for information on where to find it