Freematics Forum

You are getting the same NO SERVICE response?

There is a dedicated protocol chip doing OBD protocols and GPS data parsing. ISO9141-2 is implemented but not all cars with that protocol can be successfully connected and we are not going to improve that as the protocol is phasing out.

Have you ever changed APN via the App? If so, you need to change again from there.

You have mistakenly chosen Arduino Leonardo as board type.

• ESP32 Arduino core 2.0.14

• ESP32 IDF 4.4.6

• Fixed BLE breakage

Download release from github

Yes it will work out of box in most cases.
In case you need to build and alter the firmware, check out this guide.
https://freematics.com/pages/products/f ... lus/guide/

Disabling OBD and cellular module not being recognized was caused by a bug and is now fixed in the latest code.

Both the LED and beeper can be turned off in you look at the code. Search for "PIN_LED" and "beep" in telelogger.ino.

Up to 3A

Serial1