Arduino Uno R3 Development Board - Control Voltage

Open-source electronics prototyping platform

Arduino Uno R3 SMD Development Board - Arduino

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For Arduino UNO R3 Development Board LoT Learning Sensor ATmega328p Main Control Board Pink - AliExpress

SunFounder Uno R3 Control Board - RobotShop

Arduino Uno R3 Microcontroller

Enhanced and improved, the Arduino UNO R4 Minima is armed with a powerful 32-bit microcontroller courtesy of Renesas. Brace yourself for increased processing power, expanded memory, and a whole new level of on-board peripherals. The best part? Compatibility with existing shields and accessories remains intact, and there's no need to make any changes to the standard form factor or 5 V operating voltage.

Arduino Uno R4 Minima - ABX00080

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KEYESTUDIO UNO R3 Development Board For Arduino Official Upgrated Version With Pin Header Interface

Open-source electronics prototyping platform

Arduino Uno R3 Development Board