Learning Standard
The most documented and beginner-friendly platform
5V Logic
Easy interfacing with 5V sensors and actuators
Massive Community
Millions of tutorials, libraries, and projects available
Shield Ecosystem
Hundreds of plug-and-play shields for any application
Arduino Uno is the standard for learning electronics and programming microcontrollers. The R4 version brings a powerful Renesas RA4M1 with USB-C and WiFi capability.
Technical Specifications
Processor
ATmega328P @ 16MHz / RA4M1 @ 48MHz
Flash Memory
32KB / 256KB
RAM
2KB / 32KB SRAM
GPIO Pins
20 pins
Voltage
5V
Features
5V Logic
USB Programming
Arduino IDE
Huge Community
Interfaces
UARTSPII2CPWMADC
Products & Variants
DevKits
- Arduino Uno R3
- Arduino Uno R4 Minima
- Arduino Uno R4 WiFi
Popular Firmwares
Arduino Bootloader
Standard Arduino IDE
GRBL
CNC motion control
Marlin
3D printer firmware