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Thanks for the reply

What size is the DC connector?

After a board manager install of minicore uploading is now working.

Thanks again.

I've been looking through the library code, and (if I'm correct) I've noticed that the timer2 initialization is for a 4MHz clock, not 8MHz. Not a major problem, but I thought I'd mention it.

Mike

Problem (almost) solved.

I've just had a reply from MCUdude.

Minicore requires Avrdude 7.2 which is installed from the board manager, but not with the manual zip install.

Thanks for your help.
Mike

Andrew, I use the IDE to upload. Can't check using board manager as I downloaded the minicore zip for a manual install, but I believe it is the latest version, downloaded last Monday. I've just been over to the minicore github. This problem seems to have already been flagged as an issue, so I added ...

Hi Mike, From the error message I can't see anything wrong with your setup but the AVRDude syntax error is a bit odd. Can I first check a few things with you: 1) If you just compile the sketch without uploading (by just clicking the tick button in the top left-hand corner of the Arduino IDE) do you...

Hello, I'm getting an error when trying to upload code to my cube: Arduino: 1.8.19 (Windows 10), Board: "ATmega328, Yes (UART0), EEPROM retained, Default, 328P / 328PA, BOD 2.7V, LTO disabled, Internal 8 MHz" Sketch uses 15180 bytes (46%) of program storage space. Maximum is 32384 bytes. Global vari...