Description
The Arduino Uno R3 is the most popular and beginner-friendly development board used in electronics, robotics, and programming projects. It is based on the ATmega328P microcontroller and offers a simple USB interface, 14 digital I/O pins, 6 analog inputs, and built-in support for the Arduino IDE.
This board is perfect for students, hobbyists, makers, engineers, and anyone learning embedded systems. At Faranux Electronics, we provide only genuine, high-quality Arduino boards with reliable local support.
Arduino Uno R3 Key Features
- Microcontroller: ATmega328P 8-bit AVR MCU with pre-loaded Arduino bootloader
- Operating Voltage: 5 V (logic level)
- Input Power: Recommended 7–12 V (via barrel jack)
- USB Interface: USB Type-B for programming and power
- Digital I/O Pins: 14 (6 PWM capable)
- Analog Inputs: 6 (A0–A5)
- Clock Speed: 16 MHz
- Memory: 32 KB Flash (0.5 KB used by bootloader), 2 KB SRAM, 1 KB EEPROM
- Connectivity: ICSP header for SPI programming
- Extra: Reset button, power LED, TX/RX communication LEDs
Features That Matter
- Easy to program via Arduino IDE on Windows, Mac, or Linux
- Extensive community support & tutorials make it one of the most supported boards in the world
- Compatible with hundreds of shields and modules for sensors, motors, displays, and connectivity
Removable ATmega328P Chip (A Key Advantage of the Uno R3)
One unique benefit of the Arduino Uno R3 is that it uses a removable, socketed ATmega328P microcontroller chip, unlike many newer development boards that use soldered surface-mount MCUs.
This simple but powerful feature makes the Uno R3 ideal for education, prototyping, repairs, and standalone deployment.
Why the Arduino Uno Removable Chip Matters
1. Easy Replacement
If the board becomes damaged due to wiring errors, short circuits, or incorrect code upload, the ATmega328P chip can be replaced at a very low cost — without replacing the entire board.
2. Burn Bootloaders / Program Chips Externally
You can remove the ATmega328P and program it using:
- An external AVR programmer
- Another Arduino as ISP
- A dedicated ICSP tool
This makes the Uno R3 valuable for learning low-level microcontroller programming.
3. Use the Chip for Your Own Custom Circuits
You can program the chip on the Uno, remove it, and plug it into:
- Breadboards
- Custom PCBs
- Minimalist standalone Arduino circuits
This helps reduce cost in final projects while still leveraging Arduino libraries and code. Refer to the circuit in here.
4. Beginner-Friendly and Repairable
Students often make mistakes when wiring circuits. The removable DIP-package microcontroller means they can simply replace the chip and continue learning — keeping the Uno R3 as one of the most classroom-friendly boards.
Resources
Package includes: 1×Arduino Uno R3 Board with logo 1×Arduino Uno Cable (USB-A To USB-B)
