I've been programming some SMD Atmega328p with an UNO using the Arduino as ISP and MiniCore.
Programming usually goes off without a hitch, but occasionally a chip seemingly gets bricked and I'll get the Device signature = 0x000000 error even though I haven't touched the wiring except for 3.3V and GND.
I did notice I forgot to plug in 3.3V and only had the GND connected during one upload. The Arduino IDE was showing it writing and reading anyways then an error occured after. After that all I'm getting is the device signature error on that board, can't even burn a new bootloader on it.
Maybe this is the cause of the random failures? Is there a way to bring this controller back to life?
Any insight would be appreciated!