Library for the Atlas Scientific OEM circuits
The pi 3 has problems communicating with the OEM circuits due to a clock stretching bug in the raspberry Pi hardware raspberrypi/linux#4884 It is also an issue with the pi 4, but not always.
In addition, recent Raspbery Pi OS updates (into Bullseye) have a glitch where bytes get dropped for reasons we cannot figure out, which seems distinct from the clock stretching bug. The last image that doesn't seem to have these issues is this one, though updates may break it.
You are welcome to try other distros or let us know if you figure out how to resolve this.