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This adapter reroutes the CAN1 pins, UART3 and some IOS. The firmware must be edited a little to make this work.
The Teensy 4 seems to have no low voltage detector.
… comparing the output to the original Teensy3.2.
However we can add more connectors later, like to separate the Victron can to the battery pack can. If we redesign for the Teensy4.1, we can even have 3 can buses.
The user must now press a key + return to send a command.
Just found out that this work was already in martinezz fork. However it is not arduino.
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Hello Tom
To move on with the shortage of teensy3.2 and even his end of life, I ported the software to Teensy4.0 and built a PCB adapter (sources included).
It has been tested on a VW BMS at EV Romania / Kitoffgrid offices.
I cleaned up the code here and there to facilitate my work.
define USING_TEENSY4 in config.h to be in the Teensy4.0 version.