However, while the Uno is a helpful board for your beginner projects ... in size and microcontroller, the Arduino Nano and Micro share some similar pinout configurations. They both have two ...

Connector to add external battery to real-time clock (RTC) inside Renesas MCU (MCU RTC power pad held to 5V rail on Minima) Secondary (wireless) processor: 240MHz 3.3V dual core 32bit Espressif ...