Hi all -
Just learning with some ATmega328pu chips.
I started by following this guide which seems to come up a lot on this board - Gammon Forum : Electronics : Microprocessors : How to make an Arduino-compatible minimal board
I was able to detect the chips properly with the atmega_board_detector sketch, and burn an Uno 16Mhz bootloader, but after that the chips fail to enter programming mode and ask me to check my wiring (even though moments ago it worked fine to setup the bootloader.)
I tried two different chips, and they both appear to be recognized fine until that moment.
I'd be interested in any advice any pointers on getting these working or critiquing my approach.
I have attached a photo of the setup -
1 10k resistor between rst and and +
2 22uf caps between the oscilator and -
1 16mhz oscilator between 9 and 10
2 .1uf caps between + and - as close to chip as possible
connected uno to breadboard
10 - 1
11 - 17
12 - 18
13 - 29
Is it possible the chips are fakes enough to pass identification but not flashing? Would that even be a thing?