The Arduino Uno-compatible board has an MCS-51 (often called 8051 instead) instead of the usual ATmega328P/ATmega168. Specifically, [ElectroBoy] uses the AT89S52 .

The Uno is such a popular board that it's most folks' first pick when they need of a microcontroller platform for their projects, especially if they're just getting started with Arduino.

Arduino has announced the new UNO R4 board family for prototyping and learning. The new models feature a faster microcontroller, a USB-C connector, improved power, Wi-Fi and Bluetooth LE, and more.

Two new variants of the Arduino Uno development board, the lightweight Uno R4 Minima and the full-fledged Uno R4 WiFi, are each powered by a 32-bit microcontroller. These next-generation Uno boards ...

Arduino, the world's leading open-source hardware and software platform, today announced the launch of its next-generation UNO board, a significant re ...

The Arduino Uno Rev3 is the third revision of the classic Arduino Uno board. Compared to its earlier iterations, it includes upgraded components and new features, such as an ATmega16U2 instead of ...

32-bit Cortex-M4 Arduino has revised its UNO board and promised "a long-awaited update on performance and possibilities." The Arduino UNO R4 keeps the UNO family’s standard form factor, shield ...

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...

Arduino, the open-source hardware and software platform, has launched its next-generation UNO board, a significant revision of its 8-bit technology. Powered by a 32-bit microcontroller, the new UNO R4 ...