The keypad uses an onboard ATMega328P to scan the matrix for button presses, decode them, and send them via UART or I²C to an Arduino. [ELECTRONOOBS] has the PCB files available via Patreon for ...

The Arduino Uno is an open-source microcontroller board based on the Microchip ATmega328P microcontroller ... a learning experience for electronics design. They were useability tests, and even ...

The binary watch is powered by an Atmel/Microchip ATmega328P programmed using the Arduino platform ... on the Instructables website. “I love PCB. I love Binary. A few years ago when I was ...