There are many reasons to build your own Arduino circuit on a protoboard or a custom-designed printed circuit board. At the heart of the Arduino platform is an AVR microcontroller, in usual way you ...

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 ...

This is just a suggestion of an easy way to burn the bootloader. I uploaded [https://github.com/DavidGuo-CS/OSOYOO_Arduino/blob/main/libraries/Lgt328P_ISP/Lgt328P_ISP.ino] on my ATmega328p (Arduino ...

Since you lacked the USB interface in your own Arduino board, it becomes necessary to use a homemade/ready-made USB to Serial Converter Module as an efficient and economical solution. Inexpensive and ...