i’ve been trying to upload a sketch to my arduino Uno R3 and avrdude give me this error every time:
avrdude: verification error, first mismatch at byte 0x7800
0xff != 0xb1
avrdude: verification error; content mismatch
when I upload my sketch to a mega board, there is no problem at all. Or when i upload some other sketch to my uno, it is always working well. The sketch itself is pretty big:
Sketch uses 32 008 bytes (99%) of program storage space. Maximum is 32 256 bytes.
Global variables use 1 483 bytes (72%) of dynamic memory, leaving 565 bytes for local variables. Maximum is 2 048 bytes.
But I think it should not cause this problem. I attached 2 pictures of my board, if it counts something… So what can I do? It is urgent, thank you in advance!