I have a problem that I can not understand, maybe you can help.
I want to read serial data from a device that is operated with an ATMEGA8.
Now I have the problem that when I try it with a UNO I don't get any data.
With a Nano it works, as well as over a USB/TTL CD2102 to a computer
The UNO I have already tested against the Nano and the CD2101 from there it receives data.
What could be the reason for this?