Freematics Forum

Traccar edition has no SIM7600E-H option. It only comes with ONE+ Model A and Model H.
Could you provide your serial output so I can further advise, especially when the device is about to wake up?

We have shipped thousands of this GPS receiver around the world and has barely heard about an issue like this. One data a week does not sound normal. Are you sure it is not caused by transmission? How do you collect the data?

If IP is obtained, this is not a hardware issue. Check if the SIM card has got enough balance.

In latest code internal and external GNSS automatically identified with GNSS_STANDALONE, so there is no need to define GNSS_INTERNAL or GNSS_EXTERNAL. The cause of your issue is that you might be using older hardware which has u-blox M8 instead of M10. Please comment out line 551 and uncomment line ...

I believe esp_spiram_get_size is an updated API provided by recent ESP32 Arduino core. It seems you might be using an older core.

Try skipping the check for PID_SPEED.

Sending CAN message is always possible. This was not provided as an API due to security concern as the device could be internet connected. The concern now seems irrelevant and thus APIs have been added. Example of sending a CAN message as below. // send a CAN message (clearing DTC) obd.setCANID(0x7E...

The dedicated chip is proprietary.
Have you tried on any of those old cars? What did you get?

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.