Hi Christian,
very impressive. You did a great job on the development and on the documentation.
It is good to have an alternative hardware option.
As you mentioned, it is a disadvantage that OTA is not possible, but that seems to be the price for a cheaper hardware. Other obstacles I see, is that the hardware seems only available directly from China and that we need to build our own motherboard. That is for me the greatest hurdle, alltough you did a great documentation with the Eagle schematics.
I would like to test your hardware approach, if the hardware would be available as a "ready to go" kit. Are you planning on providing such a kit?
I could definitly see this as part of the OVMS repository. Lets see what the other opinions on that are :-)
Regards
Chris
Am Samstag, dem 26.04.2025 um 17:40 +0200 schrieb Info via OvmsDev:
Hi,
I finished the implementation and documentation of the OVMS module based
on the Lilygo T-Call A7670E board (ESP32 WROVER E and a Simcom A7670E).
The module is in operation since more than a month in my Smart EQ.
The hardware details can be found here:
There are some limitations wrt the standard module:
- only 4MB Flash -> no OTA update
- no GPIO extender -> only 2 CAN buses
- no SD-card support
The required modification in the firmware:
- remapping of the ESP32 pins in ovms_peripherals
- replace some of the GPIO extender pins by standard ESP32 pins
- new hardware option in menuconfig (set CONFIG_OVMS_HW_BASE_LILYGO_1_0=y)
- Simcom 7670 modem support (already available in the OVMS repo)
All this is available in the branch lilygo-support of
My question to the main developers: Is there interest to incorporate
this into the official OVMS repository?
Best regards
Christian
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