Hi...
I developed my "diy optical probe" based on this: Arduino Remote Control Tutorial
But my code not work ...
You wrote : byte cmd[] = {0xAF,0x3F,0x21,0x8D,0x0A}; ... but this will be {0x2F,0x3F,0x21,0x0D,0x0A}; ???
Can please share the essential code to write and read from the meter?
Thanks,
JP