I use Arduino Nano as programmer and I have absolutely no problems with Attiny 85 that I bought from Digikey.
I have a couple of Attiny 85 that I bought from Aliexpress that I can’t program. When I try to program them I get this message:
- avrdude: Yikes! Invalid device signature.
- Double check connections and try again, or use -F to override this check.
I tried to burn bootlogger and I also tried an external clock with 85 but I got the same message.
Once I replace Aliexperss 85 with the one that one that I got from Digikey everything works like charm.