![Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping](https://topupcrate.com/image/cache/catalog/product/2944-800x930.jpg "Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping")
+![Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping](https://topupcrate.com/image/cache/catalog/product/2945-800x930.jpg)
+![Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping](https://topupcrate.com/image/cache/catalog/product/2946-800x930.jpg)
+![Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping](https://topupcrate.com/image/cache/catalog/product/2947-800x930.jpg)
+![Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping](https://topupcrate.com/image/cache/catalog/product/2948-800x930.jpg)
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- ATmega328P Microcontroller: Powered by the reliable ATmega328P, running at 16 MHz with 32KB of flash memory, 2KB SRAM, and 1KB EEPROM, offering ample resources for a wide range of basic to advanced electronics projects.
- 14 Digital I/O Pins & 6 Analog Inputs: Features 14 digital I/O pins (6 of which support PWM output) and 6 analog inputs (10-bit resolution), providing flexible options for sensors, motors, and other external components.
- USB Connectivity for Easy Programming: The built-in USB port allows for direct programming and serial communication, enabling a simple connection to your computer for sketch uploading and debugging through the Arduino IDE.
- Compatible with Arduino IDE: Full compatibility with the Arduino IDE ensures easy access to a vast array of libraries, code examples, and community-driven projects, making the Uno a great choice for both beginners and experienced makers.
- Widely Used in Education & Prototyping: The Arduino Uno is a standard in educational environments, widely used for learning and teaching electronics and programming. It's perfect for prototyping, robotics, IoT projects, and more.
Product description
ARDUINO UNO BOARDS COMPARISON
 Arduino Uno REV3 |  Arduino Uno R4 Minima |  Arduino Uno R4 WiFi |
|---|---|---|
| Microcontroller ATmega328P | Microcontroller Renesas RA4M1 (Arm Cortex-M4) | Microcontroller Renesas RA4M1 (Arm Cortex-M4) |
| Connection USB Connection | Connection USB-C Connection | Connection USB-C and WiFi |
| Legacy The most sold UNO board so far | Intro New launched, cost effective UNO board | Intro Newly launched, LED matrix, more features, robust |
Important information
Legal Disclaimer
Must be at least 18 & over to purchase.
| General | |
| Processor | 16 MHz |
| RAM | 8 KB SRAM |
| Brand | Arduino |
| Series | ARD_A000066 |
| Item model number | A000066 |
| Operating System | arduino |
| Item Weight | 1.6 ounces |
| Processor Brand | Atmel |
| Number of Processors | 1 |
| Manufacturer | ARDUINO |
| ASIN | B008GRTSV6 |
| Date First Available | November 25, 2009 |
| Product Dimensions | 3.15 x 2.17 x 0.98 inches |
| Wireless Type | Bluetooth |
| Item Dimensions LxWxH | 3.15 x 2.17 x 0.98 inches |
| Color | Green |
| Batteries | 1 9V batteries required. |
| Computer Memory Type | SRAM |
| Standing screen display size | 1.5 Inches |
| Is Discontinued By Manufacturer | No |
| Number of USB 2.0 Ports | 2 |
| Flash Memory Size | 1 GB |
| Power Source | 5 |
| Voltage | 12 Volts |
