Arduino programming for SAE J1850 PWM

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Peter
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Arduino programming for SAE J1850 PWM

Post by Peter »

Hi Forum. Does anyone have a working Arduino programme for talking to SAE J1850 PWM bus please? Tons of stuff on the web for VPW but not PWM :-(
Any help appreciated as I am trying to retain my dashboard and use the original dials for EV purpose. RPM as Amps, Fuel as SOC and Temp as SDU temp.
So far been talking to the dashboard via MultiEcuScan and can make the dials change and can see what does what code wise but cant get the dials to work other than using MES, so frustrating.
Code I see is which does change with MES commands for dashboard actuators .... 18 DA 60 F1 05 2F 55 XX 03 YY Where XX is the dial address and YY is the value to send (all in Hex). Probably need to send more codes but for now if I can just get that far it will help.
Also a heads up for anyone thinking of buying an ELM327 adaptor for CAN comms in the future...make sure you buy a good quality one, so far I have two that are simply rubbish !
Thanks in advance. Peter
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