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Volvo V/S90 front seats retrofit/standalone.
#21
(07-05-2025, 02:58 AM)The Stig Wrote: Success! I got my setup to work. Specifically Arduino + MCP2515 with codes from @IMAY2023. Had to parse through the file to weed out some, due to there being too many to push all of them brute-force style through the arduino (not enough space). Most of the credit goes to ChatGPT, as I am not code savy. 

Thanks to everyone that helped!

EDIT: added the file I used to upload to the code for the CAN signals. This is what ChatGPT pulled out of the IMAY2023's file as "most likely to be related to interior functions", and may not be exactly all of them. But it is good enough to make the front seats operate.

Absolutely stellar, brilliant work and news!!!!

From the wiring perspective, I'm assuming you've just rammed the MCP2515 straight to can high & low on the seat from the Arduino, along with the 3-4 12V+ on the seat?

Thank you so much for replying, updating and popping that here, and once again to IMAY!
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#22
(07-05-2025, 09:15 AM)kaptinkeiff Wrote:
(07-05-2025, 02:58 AM)The Stig Wrote: Success! I got my setup to work. Specifically Arduino + MCP2515 with codes from @IMAY2023. Had to parse through the file to weed out some, due to there being too many to push all of them brute-force style through the arduino (not enough space). Most of the credit goes to ChatGPT, as I am not code savy. 

Thanks to everyone that helped!

EDIT: added the file I used to upload to the code for the CAN signals. This is what ChatGPT pulled out of the IMAY2023's file as "most likely to be related to interior functions", and may not be exactly all of them. But it is good enough to make the front seats operate.

Absolutely stellar, brilliant work and news!!!!

From the wiring perspective, I'm assuming you've just rammed the MCP2515 straight to can high & low on the seat from the Arduino, along with the 3-4 12V+ on the seat?

Thank you so much for replying, updating and popping that here, and once again to IMAY!

Yes, wire up the MCP2515 to the arduino (follow walkthroughs or ChatGPT if you are a noob like me), then CAN H and L straight from MCP2515 to the pin's on the seat (29 L and 30 H). Make sure to power at least the two 12V+ pins that run the control module (pin 3 and 16), and ground pin 6. Also, for the CAN wires, twist them, and add a 120ohm resistor on both ends to "terminate". so one going across the wires at the seat side and another at the MCP2515 side. Also, make sure the arduino is grounded to the same ground as the seat. Hope that all makes sense. 

After I make this all a neat package and actually get it in the car, I will tackle the vented and heated functions.
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