i wanted to build my own version of an Arduino uno as a nice smd soldering project. But after completing the build, i wasn´t able to upload the bootloader. I followed the official Arduino tutorial and also tried some other methods, but none of them have worked so far.
This is the Error Message I keep getting:
avrdude: stk500_initialize(): (b) protocol error, expect=0x10, resp=0x01
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
The board itself can be seen here:
I made some modifications to the original Arduino UNO design but it should work.