Hope you’re all keeping well and that your holidays have been lovely so far!
I’ve been watching the OVMS project for just over a year since Mercedes announced they were going to shut down the Smart EQ servers (UK 453 Brabus). Then, we got my mum a module for Christmas so finally getting to play with it properly 😄
If I start V2 on the module, it either crashes instantly or does so within a few minutes. If I enable autostart on it, it boot loops for a minute and then needs a manual reboot. Not so bad in the summer but having to go back outside to the car in 1°C weather isn’t my idea of fun 😂
Problem is: when it crashes, there’s no crash data.
Last crash: IllegalInstruction exception on core 0
Registers:
PC : 0x00000000
PS : 0x00000000
A0 : 0x00000000
A1 : 0x00000000
A2 : 0x00000000
A3 : 0x00000000
A4 : 0x00000000
A5 : 0x00000000
A6 : 0x00000000
A7 : 0x00000000
A8 : 0x00000000
A9 : 0x00000000
A10 : 0x00000000
A11 : 0x00000000
A12 : 0x00000000
A13 : 0x00000000
A14 : 0x00000000
A15 : 0x00000000
SAR : 0x00000000
EXCCAUSE: 0x00000000
EXCVADDR: 0x00000000
LBEG : 0x00000000
LEND : 0x00000000
LCOUNT : 0x00000000
Backtrace:
Version: 3.3.005-536-g20a42926/ota_1/edge (build idf v3.3.4-851-gfa4f07fb3b Dec 25 2025 16:43:35)
Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/3; MODEM SIM7600
Despite all this, I’m having no such issues with V3/MQTT. I’m happy to use that - and I intend to integrate it with Home Assistant so probably would aim for that in general, but the data usage is *so* much lower on V2 - and with a Hologram SIM, that’s pretty important - that I’d have preferred to go down that path.
Any ideas as to why it could be crashing?
Best wishes and kind regards,
Aaron