Archive for avr isp
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bootloading the arduino to run at 3.3v
The trick to running the atmega328 at 3.3v and not 5v is to load a new ‘bootloader’ on it. The chip I purchased came on top of an Arduino Duemilanove. As such, it was pre-programmed (which is what the ‘bootloader’ code does) to run at 5v. (For more on ‘bootloaders’ and arduinos see here.) So I basically needed to load a new ‘bootloader’ on to the chip.
