The ESP32 UNO D1 R32 is a versatile development board that combines the power of the ESP32 microcontroller with the convenience of the Arduino Uno form factor. Here’s an overview of its features:

  • ESP32 Microcontroller: The board is built around the ESP32, a powerful and feature-rich microcontroller that offers WiFi and Bluetooth connectivity, ample GPIO pins, and a wide range of capabilities.
  • Arduino Uno Compatibility: The board’s design follows the Arduino Uno layout, allowing it to be used with a variety of Arduino shields and accessories. This makes it convenient for those familiar with the Arduino ecosystem.
  • WiFi and Bluetooth: The ESP32 microcontroller on the board provides both WiFi and Bluetooth connectivity options. This enables you to create projects that can connect to the internet, communicate wirelessly with other devices, and integrate with IoT applications.
  • GPIO Pins: The board offers numerous GPIO pins, which can be used for various purposes such as connecting sensors, actuators, and external components.
  • USB-to-Serial Interface: The board typically includes a USB-to-serial interface (often based on the CH340 chip) that allows you to program the ESP32 and communicate with it via USB.
  • Power Supply Options: The board can be powered through a USB connection or an external power source, similar to the Arduino Uno.
  • Integrated Components: Some versions of the board may include additional integrated components like voltage regulators and LEDs.

In summary, the ESP32 UNO D1 R32 WiFi Bluetooth Development Board offers a combination of the ESP32 microcontroller’s advanced capabilities with the familiar Arduino Uno layout. This makes it a great choice for developers who want to leverage the power of the ESP32 while staying within the Arduino ecosystem. The built-in WiFi and Bluetooth connectivity add versatility and open up possibilities for creating a wide range of projects, from IoT devices to wireless communication applications.


  • ESP32-WROOM-32 in Arduino UNO form factor
  • Working Voltage: 3.3V
  • DC Input Voltage: 5V – 12V DC
  • Wifi: 802.11 b/g/n/e/i (802.11n up to 150 Mbps)
  • Bluetooth: v4.2 BR/EDR and BLE specification
  • RAM: 520KB
  • Flash Memory: 32Mb (4M bytes)
  • Power consumption:
    • Max current: 250mA
    • Sleep current: 0.15mA
    • Active without WiFi current: 20mA
  • Operating Temperature: -40C > +85C


  • 1 x ESP32 UNO D1 R32 WIFI Bluetooth Development Board
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