“Recently I have got some ATMEGA8L chips that cannot be read nor programmed through USBASP. I was wondering whether these chips are usable or totally broken.
I have read the datasheet of chip and realized that the chip may not be able to read if it is locked and/or the fuse settings are wrong.
It also mentioned that High Voltage Parallel Programming (HVPP) can be used to rescue the chip. Therefore I build this to test it out.
You can make one to rescue your chips as well.”