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Arduino UNO R3 is the world’s most trusted beginner and prototyping board. Powered by the ATmega328P @ 16 MHz, it combines 14 digital I/O (6 PWM), 6 analog inputs, rock-solid 5V logic, and the broadest ecosystem of Arduino shields, sensors, and displays. If you’re teaching a class, starting a lab, or bootstrapping a product idea in the Philippines, this is the reliable, repeatable choice.

Why Makers & Classrooms Choose UNO R3

  • Beginner-friendly & battle-tested: Huge community, examples, and libraries work out of the box with the Arduino IDE.
  • 5V shield compatibility: R3 footprint and pinout mean instant add-ons for motor control, Ethernet, LCDs, and more.
  • Stable USB & power: Program via USB-B; power from USB or DC jack (recommended 7–12 V) for standalone projects.
  • Perfect for teaching: Simple toolchain, reliable hardware, and endless tutorials for fast classroom wins.

What You Can Build

  • STEM projects: traffic lights, temperature loggers, distance meters, datalogging with RTC + microSD
  • Home & hobby: smart plant watering (relay + soil sensor), door alarms (PIR), IR remotes
  • Robotics: line followers and 2WD cars with motor shields and IMU/ToF sensors

Starter Bundles (Quick Picks)

Recommended Add-Ons

Technical Specifications

Microcontroller ATmega328P (8-bit AVR) @ 16 MHz
Operating voltage 5 V logic
Input voltage (recommended) 7–12 V via DC jack (6–20 V allowable)
Digital I/O pins 14 (D0–D13), 6 PWM (D3, D5, D6, D9, D10, D11)
Analog inputs 6 (A0–A5), 10-bit ADC
Per-pin DC current 20 mA (do not exceed absolute max)
Flash / SRAM / EEPROM 32 KB (0.5 KB bootloader) / 2 KB / 1 KB
Interfaces UART (D0/D1), I²C (A4/A5), SPI (ICSP header)
USB interface ATmega16U2 on official boards (some compatibles use CH340)
USB connector USB-B
Power connectors USB 5 V, DC barrel jack 5.5×2.1 mm (center-positive), VIN, 5V, 3V3, GND
On-board features RESET button, AREF, ICSP, LED_BUILTIN (D13)
Dimensions 68.6 × 53.4 mm (R3 footprint)

Pinout & Power Tips

  • SPI via ICSP: Use the 6-pin ICSP header for reliable SPI (works on UNO/Mega alike).
  • Level safety: UNO is 5 V. If a module is 3.3 V-only, add a logic level converter.
  • Power sources: For portable builds, power via DC jack or VIN (7–12 V recommended). For bench work, USB is fine.

Learning Path (Beginner → Intermediate)

  1. Blink & Inputs: LED blink, button debounce, tone/buzzer
  2. Sensing: DHT22 temp/humidity, HC-SR04 distance, LDR light
  3. Outputs: relays, servos, LCD/OLED
  4. Data logging: microSD + RTC shield, graphs & alerts
  5. Motion & robots: motor shield + 2WD/4WD chassis + IMU

What’s in the Box

  • Official Arduino UNO R3 board

Compatibility & Notes

  • Shields: R3 footprint with full 5 V logic for maximum shield compatibility.
  • Drivers: Official boards use ATmega16U2 and usually don’t need extra drivers; some compatibles use CH340/CP2102 (install if required).
  • UNO R3 vs R4: R4 is 32-bit with USB-C but keeps R3 shield compatibility. If you need native 5 V + classic ecosystem, UNO R3 remains a solid default.

FAQs – Arduino UNO R3 (Philippines)

Is this beginner-friendly?
Yes. UNO R3 is the most widely used Arduino board for first projects—simple setup, massive library support, and tons of tutorials.
Which cable and power supply do I need?
Use a USB-B cable for programming. For standalone projects, power via the DC barrel jack (7–12 V recommended) or a regulated 5 V rail.
Will my shields and modules work?
Yes—UNO R3 uses the R3 footprint and 5 V logic. Use a level shifter when connecting 3.3 V-only modules.
Do you ship nationwide and support school/corporate orders?
Yes. We ship nationwide across the Philippines via trusted couriers and can prepare classroom bundles and bulk quotations on request.

Arduino Uno R3

Arduino Uno R3

Low stock: 9 left

Product Code

A000066I

₱ 1,789.00
₱ 1,789.00
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