Hello to all,
First, apologize my english, I'm french, but I expect you will understand my problem and give me some help
I start a arduino project with a PN532 NFC reader:
I make them from china and some of them had a bad programming and now I get this error when I retry to program it with an arduino uno 328 as isp:
avrdude: Device signature = 0xffffff
avrdude: Yikes! Invalid device signature.
avrdude: Expected signature for ATmega32U4 is 1E 95 87
I see it look like a fuse problem and I need to write them but I don't have any idea how you can do that and don't really understand some topics (Noob spotted)
I expect you can do something for me