[Ovmsdev] Support for Lilygo T-Call based module

[Chris van der Meijden]

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: 
> https://github.com/zbchristian/OVMS-Lilygo-based-Module
> 
> 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 
> https://github.com/zbchristian/Open-Vehicle-Monitoring-System-3-Lilygo-Support
> 
> My question to the main developers: Is there interest to incorporate 
> this into the official OVMS repository?
> 
> Best regards
>     Christian
> 
> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.openvehicles.com
> http://lists.openvehicles.com/mailman/listinfo/ovmsdev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openvehicles.com/pipermail/ovmsdev/attachments/20250427/348d8b67/attachment.htm>