Hello everyone, I have a question regarding running a 5V Atmega328P-AU chip on 3.3v at 8MHz.
Up until now, I have always used 3.3v Arduino pro minis to run on my custom 3.3v Arduino development boards, I have noticed though that whenever I use an Atmega chip from a 5V Arduino pro mini, it simply won't upload the code and won't work. They are technically the same chip?
I am nearly certain that this is due to the bootloader and I can just bootload the chip on a 3.3v Arduino pro mini but I have not had the chance to test it out yet.
Is it just a matter of uploading the 8MHz 3.3v bootloader?