A new development board blends the classic UNO layout with built-in Wi-Fi and Bluetooth, aiming to simplify the jump from legacy Arduino projects to modern, connected designs.
A fresh entrant has quietly landed in the maker and IoT toolkit world by Rajguru Electronics, an ESP32-powered development board built in the beloved Arduino UNO form factor. This design marries decades of shield compatibility with today’s wireless-ready microcontroller chops, potentially speeding up prototyping for a wide range of connected hardware projects.
The key features are:
- Modern wireless stack: Wi-Fi 802.11 b/g/n + Bluetooth 4.2 Classic/BLE for IoT and remote control tasks.
- Rich I/O ecosystem: ~38 general-purpose pins with ADC, DAC, PWM, capacitive touch support.
- UNO-compatible layout: Standard Arduino Uno form factor for shield and accessory reuse.
- Flexible power and programming: USB-C interface and CH340 USB-UART bridge onboard.
- Multi-interface support: SPI, I²C, UART, I²S, and more for sensors and modules.
What’s interesting here is not just the fusion of past and present, but how this board reshapes the expectations around form factor and feature set. By keeping the familiar UNO footprint yet packing the performance of an ESP32 module, it gives builders a softer landing if they’re stepping up from classic Arduino stacks or swapping boards mid-project.
Right off the bat, the board places a dual-core ESP32 module at its heart with built-in Wi-Fi and Bluetooth, two wireless standards most makers now take for granted but that were absent from traditional UNO boards. Developers get plenty of I/O, analog channels, touch input capability, and modern USB-C connectivity for programming and power.
This combination makes it suitable for everything from connected sensors and home automation gateways to lightweight robotics, data loggers, and portable web interfaces all while making it easier to reuse shields and breadboard layouts originally designed for Arduino Uno boards.
This board joins a growing ecosystem of ESP32 derivatives like the ADIY ESP32 Development Board and other UNO-style modules such as Elecbee ESP32 WiFi + Bluetooth 4MB Flash UNO D1 R32 Development, offering makers a compelling blend of familiarity and future-ready connectivity.
