Double MCP2515

[tatinox]

Hi Timo!
First of all thanks a lot for your lib, it's fantastic.

I need to use double MCP_2515 on a nodemcu instead of ESP32.
First mcp read PGN from a bus j1939 and the second send to nmea bus.

I have some problem with code becouse to read from j1939 i use the mcp_can lib that (i think) is integrated with your lib and create a conflit.

Can u explain the correct way?
NodeMcu permit it? Can i use an arduino mega?

Thanks a lot!

[svdrummer]

Just wondering, if the library is written for certain micros,(free of charge) and you get it working on non-standard micros, down the track, you are just asking for heartache. Stick to ESP 32. node MCU is esp8266 and lacks the power. I have been down that path. Save yourself the trouble.

[ttlappalainen]

If you do not need WiFi, I'll prefer to go to Teensy 4.x with two internal CAN controller. With ESP32 you can use its internal CAN controller and mcp_can lib.

[jiauka]

You could use ESP32-c6 ,has 2 CAN controllers.

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On Sat, Aug 30, 2025, 07:53 Timo Lappalainen ***@***.***> wrote: *ttlappalainen* left a comment (ttlappalainen/NMEA2000#462) <#462 (comment)> If you do not need WiFi, I'll prefer to go to Teensy 4.x with two internal CAN controller. With ESP32 you can use its internal CAN controller and mcp_can lib. — Reply to this email directly, view it on GitHub <#462 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAUPDV5EF4A55CHMFUYIJVD3QE365AVCNFSM6AAAAACFAOBHS2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTEMZYHE3TSMJZGY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>