Turning an Arduino of virtually any sort into a simple AVR 6-pin ISP programmer is old hat. But when Atmel came out with a series of really tiny AVR chips, the ATtiny10 and friends with only six pins ...

Arduino Nano with ATmega328P is available in two variants: "ATmega328P" and the older "ATmega328P (Old Bootloader)". The newer variant uses an optimized bootloader which has double upload transfer ...

This is for advanced users who want to burn the bootloader with an external ISP directly. You can do this with your program if choice (e.g. avr-dude) or use the Arduino IDE. You can either use an ...

This project creates a complete standalone ISP programmer for Arduino Nano devices using another Arduino Nano as the programmer. It's designed to program the Optiboot bootloader onto ATmega328P ...

[Chris] wrote us to share a neat technique he has been using to program the Arduinos he uses in his projects. He likes to build bare bones Arduino clones rather than sacrifice full dev boards, and ...