Original Circuit Diagram: Arduino UNO R3. Now, have a look at our favorite Arduino UNO to find out the AVR chip inside. It is ATMega328P-PU, a low-power version of the traditional ATMega328-PU. The P ...

Here, I am going to show you the simplest way of burning the Arduino Bootloader firmware into the ATMEGA328P microcontroller chip on Arduino Board. First of all, ... ← Part 21: Build Your Own Arduino ...