Hello everybody, I'm super new to Arduino and would really appreciate some help.
I've been following this tutorial: https://create.arduino.cc/projecthub/arjun/programming-attiny85-with-arduino-uno-afb829
I'm trying to flash a bootloader to my attiny85 by using an Arduino uno as an ISP but I keep getting the following error:
avrdude: Device signature = 0x000000 avrdude: Yikes! Invalid device signature. Double check connections and try again, or use -F to override this check.
From what I've read so far I seem to have bricked it. I think this may be caused by me selecting External 8MHz instead of Internal 8MHz, but I'm not entirely sure. I've done this with three Attiny85s so far and have gotten the same results every time.
Here is what I have at my disposal for fixing the problem:
- the Arduino Uno that I'm using as a programmer
- a breadboard
- the three Attiny85s mentioned above
- 10 more super small Attiny85s
- loads of LEDs, buttons, wires, and switches
- a few capacitors and resistors
What do I do to fix this? How do I unbrick these Attiny85s? Also, how do you interact with avrdude from the command line?
(please explain everything very simply, I'm pretty new to all things microcontroller)
Thanks for the help!