Like:
Serial.print(id);
Serial.print(',');
Serial.println(temperature)
You obtain something like
1,25
2,54
3,44
Also, give the file the extension "csv".
Like:
Serial.print(id);
Serial.print(',');
Serial.println(temperature)
You obtain something like
1,25
2,54
3,44
Also, give the file the extension "csv".