Pinouts for the Raspberry Pi P1 header, showing pins that can be used for general purpose IO. I used some online sources to get the naming for the pins (source list at the bottom of this post). Some of the power and ground pins were initially marked as ‘do not …

NOTE: This is an older post, and instead of using a CD4050 it might be easier to use a bi-directional level shifter module.

In an attempt to get my Raspberry Pi talking to my Arduino I’m exploring various different options. The first was to just use the USB connection …