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Hi Andrew I think I just got it to work! Changed the clock speed to 8MHz internal and it then gave me this warning regards chip type avrdude: Expected signature for ATmega328P is 1E 95 0F Double check chip, or use -F to override this check. Failed uploading: uploading error: exit status 1 swapped va...

Thanks for answer Andrew I have checked wiring and there is a RX/TX crossover (tried both ways around tbh as wasnt sure). Download the minicore as advised on this forum (reinstalled today after upgrading the Arduino IDE to 2.0.3) Am using these settings board: ATmega328 BOD 2.7V Bootloader UART0 (al...

I have a 4x4x4 cube (the version 2 i'm assuming, the 2 chips are inline, not side by side) and I have a DTR pin on board if that helps. Cube works fine and seems to go throught the preload program fine but now trying to reprogram it using this post But I can't upload anything to the chip through the...