UNO D1 R32 WiFi and Bluetooth esp32 4MB Flash memory one

SKU: FA1053-3
Microcontroller

ESP32-WROOM-32
Operating Voltage

3.3V (Logic Level)
Input Voltage

5V–12V DC (via DC Jack or VIN)
Clock Speed

Up to 240 MHz
Flash Memory

4MB (32Mbit)
SRAM

520 KB
Wi-Fi

802.11 b/g/n (up to 150 Mbps)
Bluetooth

v4.2 BR/EDR and BLE
USB-Serial Chip

CH340G
Interfaces

UART, SPI, I2C, PWM, I2S, CAN, ADC, DAC
Dimensions

68mm x 53mm
The UNO D1 R32 is a high-performance development board that merges the powerful ESP32-WROOM-32 microcontroller with the universally recognized Arduino Uno R3 form factor. Designed for the 2026 IoT landscape, it offers a seamless upgrade path for projects requiring integrated Wi-Fi and Dual-mode Bluetooth without sacrificing compatibility with standard Arduino shields.
Long Description
The UNO D1 R32 is engineered for developers who need more power than a traditional Arduino but prefer the familiar hardware layout. At its core is the ESP32-WROOM-32, featuring a dual-core 240MHz processor and 4MB Flash Memory, providing ample space for complex firmware, local web servers, and data logging.
This board bridges the gap between prototyping and professional IoT deployment. For individual makers, it simplifies the transition from basic Arduino projects to advanced connected devices. For business purchasers, its standardized footprint allows for rapid integration into existing industrial housings or specialized shields, significantly reducing R&D timelines for smart-home or commercial monitoring solutions.
Key Features
  • Dual-Core Performance: Dual-core Xtensa® 32-bit LX6 processor allows for multitasking, such as handling Wi-Fi stacks on one core while running user applications on the other.
  • Hybrid Wireless Connectivity: Built-in Wi-Fi (802.11 b/g/n) and Bluetooth (Classic + BLE 4.2) for versatile communication.
  • Uno Form Factor: Compatible with most Arduino Uno shields, though users must ensure logic levels match (3.3V).
  • Onboard Power Management: Features an integrated switching regulator that supports a wide input voltage range (5V–12V DC).
  • Rich Peripherals: Includes 14–18 digital I/O pins, 6–8 analog inputs (12-bit ADC), UART, SPI, I2C, and capacitive touch sensors.
Usage Instructions
  1. Hardware Setup: Connect the board to your computer using a Micro-USB data cable.
  2. Driver Installation: Ensure the CH340G driver is installed on your OS to recognize the COM port.
  3. Software Configuration:
    • Open the Arduino IDE.
    • Navigate to File > Preferences and add the ESP32 board manager URL.
    • Go to Tools > Board > Boards Manager, search for “ESP32”, and install.
    • Select “WEMOS D1 MINI ESP32” or “ESP32 Dev Module” from the board list.
  4. Deployment: Use standard libraries to activate Wi-Fi or Bluetooth for IoT tasks, such as creating a web-based dashboard or controlling devices via a mobile app.
Q: Can I use my existing 5V Arduino shields with this board?

Use caution. While the physical pins match, the UNO D1 R32 operates on 3.3V logic. Connecting 5V signals directly to the I/O pins can permanently damage the ESP32 chip. Use a Logic Level Converter for safe operation with 5V components.

Q: My computer doesn't recognize the board. What should I do?

This is usually due to using a “charge-only” USB cable. Ensure you are using a high-quality data cable. Additionally, verify that the CH340G drivers are correctly installed on your computer.

Q: Does it support 5GHz Wi-Fi networks?

No, the ESP32 chip only supports 2.4GHz Wi-Fi (802.11 b/g/n).

Q: Is this board suitable for commercial/business products?

Yes. The ESP32 is a production-grade chip widely used in commercial IoT devices due to its reliability, security features, and FCC/CE certifications.

Q: Why does the board reset when I try to connect to Wi-Fi?

This is often a “brownout” caused by insufficient power. Wi-Fi usage requires a high current spike. Ensure your power source (USB port or adapter) can provide at least 500mA to 1A of stable current.

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