2020-05-05, 05:54 PM
(2020-05-04, 01:25 PM)Hi, I have tried the same simple approach to connecting my Arduino Uno to my RPi 3 but cannot get the two to communicate. I wrote a simple sketch to copy received data from the RPi to the serial port but it does not make much sense eg:C7FFFFFFE83FFFFFF9D712E4739FFFFFFC7FFFFFFE83FFFFFF9D6800FFFFFF92FFFFFF9101E20FFFFFFC7FFFFFFE83FFFFFF9DFFFFFFC7FFFFFFE83FFFFFF9D6800FFFFFF921EFFFFFFBE2FFFFFF86FFFFFFC7FFFFFFE83FFFFFF9DFFFFFFC7FFFFFFE83FFFFFF9D6800FFFFFF92FFFFFFC7FFFFFFE83FFFFFF9DFFFFFFA4FFFFFF8717FFFFFF97FFFFFFC7FFFFFFE83FFFFFF9D6800FFFFFF925AFFFFFF8717FFFFFF9AFFFFFFC7FFFFFFE83FFFFFF9DFFFFFFC7FFFFFFE83FFFFFF9D1EFFFFFFBE2FFFFFF866800FFFFFF92FFFFFFC7FFFFFFE83FFDoes anyone have a description of what the data packets should look like? Wrote: If you don't care about isolation you can simply tie the Pi's TxD output to the arduino's RxD, and tie the arduino's TxD to the pi's Rxd with a simple voltage divider. Remember the pi i/o is 3.3 Volts and the arduino's i/o is 5 volts based. I have this and it works - so far.