DIYables DIYables STEM V4B IoT Development Board Compatible with Arduino Uno R4 WiFi, RA4M1 32 Bit ARM Cortex M4 with ESP32-S3 WiFi Bluetooth, USB-C, for Learning Prototyping Education
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Quick Overview
The DIYables STEM V4B IoT is a powerful development board compatible with Arduino Uno R4 WiFi, designed for STEM education, IoT projects, and advanced prototyping. It features the Renesas RA4M1 32-bit ARM Cortex-M4 microcontroller running at up to 48 MHz, combined with an ESP32-S3 coprocessor for built-in WiFi and Bluetooth connectivity.
What sets the STEM V4B apart is its 3-pin header layout — all GPIOs are arranged in 2.54mm VCC, GND, and Signal groups, enabling quick and reliable connection to sensors, modules, and peripherals without complex jumper wiring. A USB-C connection provides stable power and programming, and the board works seamlessly with Arduino IDE for coding, uploading, and debugging.
Ideal for students, makers, engineers, and educators learning electronics, embedded systems, wireless communication, and IoT development. Compatible with Arduino Uno R4 WiFi libraries and shields, with tutorials available for fast project setup.
Key Features
- Arduino Uno R4 WiFi Compatible — Works seamlessly with Arduino IDE as a drop-in alternative for Uno R4 WiFi projects with no extra configuration
- 32-bit RA4M1 ARM Cortex-M4 — Renesas RA4M1 processor running at up to 48 MHz for powerful embedded performance
- ESP32-S3 Coprocessor — Built-in WiFi 802.11 b/g/n and Bluetooth 5.0 via ESP32-S3 for wireless IoT applications
- 3-Pin Sensor Headers — All GPIOs arranged in 2.54mm VCC, GND, Signal groups for quick and reliable sensor and module connections
- USB-C Connection — Modern USB Type-C interface for stable power delivery and programming
- STEM and IoT Focused — Designed for students, makers, engineers, and educators to learn electronics, embedded systems, and wireless communication
- Arduino IDE Support — Full support for coding, uploading, and debugging in Arduino IDE with familiar workflows
- Wide Shield Compatibility — Compatible with Arduino Uno R4 WiFi shields, libraries, and accessories
- Tutorial Support — Comprehensive tutorials available online for fast learning and project setup
SPECIFICATION
| Specification | Value |
|---|---|
| Product Type | IoT Development Board (Arduino Uno R4 WiFi-compatible) |
| Microcontroller | Renesas RA4M1 (32-bit ARM Cortex-M4) |
| Clock Speed | Up to 48 MHz |
| Coprocessor | ESP32-S3 (WiFi and Bluetooth) |
| Wireless Connectivity | WiFi 802.11 b/g/n, Bluetooth 5.0 |
| GPIO Headers | 2.54mm 3-pin VCC GND Signal groups |
| Operating Voltage | 5V (via USB-C) |
| Input Voltage | 6-24V (via VIN pin) |
| Digital I/O Pins | 14 (including PWM) |
| Analog Input Pins | 6 (A0-A5) |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Programming Interface | USB-C |
| Compatibility | Arduino Uno R4 WiFi shields and libraries |
| Applications | IoT development, STEM education, prototyping, wireless communication, embedded systems learning |
COMPATIBLE HARDWARE
- Arduino IDE (Windows, Mac, Linux) — Select "Arduino Uno R4 WiFi" as board
- USB-C cable — For programming and power
- Arduino Uno R4 WiFi shields and expansion boards — Direct drop-in compatibility
- Sensors and modules with 2.54mm connectors — Connect via 3-pin VCC GND Signal headers
- External power supply — 6-24V DC via VIN pin (optional)
