The UNO-R3-Air is a high-performance, cost-effective evolution of the classic Arduino UNO Rev3. Designed to bridge the gap between hobbyist prototyping and professional-grade stability, the “Air” version introduces integrated G|V|S (Ground-Voltage-Signal) headers, I2C ports, and COM interfaces directly on-board. Available in both soldered and unsoldered versions, it offers significant cost advantages for large-scale deployments. With a reinforced 5V/2A power module, it effortlessly drives servos and sensors that typically overwhelm standard boards, providing a stable and “shield-free” experience for STEM education and complex IoT projects.
Technical Specifications
| Parameter | Specification |
| Product Name | UNO-R3-Air ATmega328P Type-C Development Board |
| Microcontroller | ATmega328P-PU |
| Compatibility | Compatible with Arduino UNO-style projects |
| Operating Voltage | 5V |
| Recommended Input Voltage | 7–12V DC |
| Supported DC Input | 6–12V DC |
| DC Input Interface | DC5525 |
| Digital I/O Pins | 14 |
| PWM Digital I/O Pins | 6 |
| PWM Pins | D3, D5, D6, D9, D10, D11 |
| Analog Input Pins | 8 |
| Analog Pins | A0–A7 |
| DC Current per I/O Pin | 20mA |
| 5V DC Power Output | 2000mA |
| Enhanced G/V Output Capability | Up to 5V/2A and 3.3V/1A |
| Flash Memory | 32KB |
| Bootloader Memory Usage | 0.5KB |
| SRAM | 2KB |
| EEPROM | 1KB |
| Clock Frequency | 16MHz |
| USB Interface | USB Type-C |
| Expansion Header Pitch | 2.54mm |
| Expansion Headers | G/V/S expansion headers |
| I2C Interface | Yes |
| COM Port | Yes |
| Additional Analog Expansion | A6 and A7 |
| Onboard LED | D13 |
| Circuit Protection | Onboard circuit protection |
| Power Selection Circuit | Yes |
| Available Versions | Soldered header version / unsoldered header version |
Projects You Can Build
Sensor Experiments: Can be used with light sensors, temperature sensors, humidity sensors, ultrasonic sensors, sound sensors, soil moisture sensors and other sensor modules.
Robotics Projects: Suitable for robotic arms, servo mechanisms, automatic doors, sensor-controlled models and interactive robot projects.
Smart Car Projects: Can be used as a controller for obstacle-avoidance cars, line-following cars, Bluetooth-controlled cars and sensor-based vehicles.
DIY Electronics Projects: A practical controller board for makers, students and hobbyists building interactive electronic prototypes.
Why Choose Us
Our facility is fully certified to international standards (CE, FCC, RoHS), so that products are classroom-safe and legally compliant in any jurisdiction. We provide a reliable supply chain, consistent quality control, and the technical depth required. Feel free to contact us!
