Arduino UNO R4 Minima & R4 WiFi – Made in India, Now Available on StemVolt
Introduction to the Next Generation Arduino R4 Boards
Arduino UNO R4 Minima & R4 WiFi – Made in India
In the world of embedded systems and electronics innovation, Arduino Uno R4 Minima and Arduino Uno R4 WiFi are rapidly gaining popularity among students, makers, and professionals. These next-gen boards—now Made in India—offer upgraded performance, enhanced memory, and seamless connectivity, enabling more powerful and scalable projects.
At StemVolt, we proudly bring these boards to Indian innovators at affordable prices with all the support you need to get started.
What is Arduino Uno R4 Minima?
The Arduino Uno R4 Minima is a compact yet powerful upgrade from the classic Uno R3. It features the RA4M1 32-bit microcontroller by Renesas, offering higher speed, memory, and advanced capabilities. It’s best suited for:
- High-performance robotics and automation
- Real-time sensor integration
- Precision control systems
- DIY electronics & STEM projects
What is Arduino Uno R4 WiFi?
The Arduino Uno R4 WiFi combines all the features of the R4 Minima and adds ESP32-S3 based wireless connectivity. You get:
- Built-in WiFi and Bluetooth
- LED Matrix for quick debugging or display
- Qwiic / I2C port for easy expansion
- Higher Flash & RAM
Perfect for IoT projects, smart home applications, wireless robotics, and data monitoring systems.
Why Choose Made-in-India Arduino R4 Boards from StemVolt?
- Reliable Quality – Verified and tested before dispatch
- Affordable Pricing – No extra import duties
- Free Shipping Across India – Fast delivery with tracking
- STEM Support – Tutorials, manuals, and project help included
- Bulk Orders for Institutions – Special pricing for schools & colleges
Ideal Use Cases of Arduino Uno R4 Boards
Application Type | R4 Minima | R4 WiFi |
Basic Projects | ✅ | ✅ |
Robotics | ✅ | ✅ |
IoT Projects | ❌ | ✅ |
Remote Monitoring | ❌ | ✅ |
Classroom STEM Learning | ✅ | ✅ |
Wireless Home Automation | ❌ | ✅ |
Difference Between R3, R4 Minima & R4 WiFi
Feature | Uno R3 | R4 Minima | R4 WiFi |
Microcontroller | ATmega328P | RA4M1 | RA4M1 + ESP32-S3 |
Clock Speed | 16 MHz | 48 MHz | 48 MHz |
Memory | 32 KB Flash | 256 KB Flash | 256 KB Flash + 8 MB external |
Connectivity | USB | USB | USB + WiFi/Bluetooth |
Debug Support | No | Yes | Yes |
Price | Low | Medium | Higher |
Why Buy from StemVolt?
- 100% Made in India boards for faster delivery and better support
- Authentic Arduino products at competitive prices
- Fast shipping across India
- Trusted by hobbyists, students, ATL labs, and institutions
- Technical guidance and training support available
Whether you’re building a DIY weather station, a robotic arm, or a smart home device — StemVolt delivers high-quality Arduino solutions backed by a reliable supply chain.
Who Should Use the UNO R4?
- Engineering students and tech enthusiasts
- Makers and developers building advanced prototypes
- Robotics and STEM labs across schools and colleges
- IoT startups and innovation centers
- ATL labs under PM SHRI initiatives
The UNO R4 Minima is perfect for controlled hardware environments, while the R4 WiFi is ready for cloud-connected systems.
Conclusion
Whether you’re building a smart irrigation system or a classroom robot, the Arduino Uno R4 Minima and WiFi versions are built to fuel your imagination. And with StemVolt’s trusted delivery and educational support, your next innovation is just a board away.