ESP32 UNO D1 R32 (CH340) WiFi & Bluetooth Development Board

Description The ESP32 UNO D1 R32 (CH340) is the ultimate bridge between the classic Arduino ecosystem and modern IoT capabilities. This development board brilliantly takes the incredibly powerful ESP-WROOM-32 WiFi and Bluetooth module and packages it into the familiar, industry-standard Arduino Uno R3 footprint. If you love the size and layout of the Arduino Uno but desperately need wireless connectivity and more processing power, this is the board for you. Equipped with a reliable CH340 USB-to-Serial converter, this board offers seamless plug-and-play communication with your PC. It features a standard DC barrel jack (accepting 5V to 12V) and a micro-USB port for programming and power. Whether you are transitioning older Arduino projects into cloud-connected devices or building brand new smart home hubs from scratch, the D1 R32 provides the processing muscle (a 240MHz dual-core processor) required for heavy-duty applications. People also search for: wemos d1 r32, esp32 uno form factor, esp32 ch340, arduino wifi upgrade board, iot development board. Specifications Microcontroller Module: ESP-WROOM-32 (Xtensa Dual-Core 32-bit LX6 @ 240 MHz) Form Factor: Arduino Uno R3 footprint USB-to-Serial Converter: CH340 Wireless Connectivity: 2.4 GHz Wi-Fi (802.11 b/g/n) & Bluetooth 4.2 (Classic & BLE) Operating Logic Voltage: 3.3V (Important: Not 5V tolerant on I/O pins) Input Voltage (DC Jack): 5V to 12V DC Input Voltage (USB): 5V via Micro-USB Flash Memory: 4MB SPI Flash Digital I/O Pins: 20 (Note: Pin mapping differs from a standard Uno) Applications IoT Gateways: Acting as a central hub to collect data from local Bluetooth sensors and forward it to a Wi-Fi MQTT server or cloud dashboard. Smart Home Automation: Building custom web-servers to control relays, lights, and appliances directly from your smartphone. Wireless Robotics: Upgrading older Uno-based robot chassis with Wi-Fi telemetry, OTA (Over-The-Air) updates, and BLE remote control. Environmental Monitoring: Creating advanced weather stations that pull real-time API data and log sensor metrics to the cloud. Frequently Asked Questions (FAQ) Q: Can I use all my existing 5V Arduino Uno shields with this board? A: Not necessarily. While the physical shape and header locations match the Arduino Uno, the ESP32 operates on 3.3V logic. Plugging in a shield that sends 5V logic signals directly to the input pins can damage the ESP32 chip. Always ensure your shields or sensors are 3.3V compatible or use a logic level converter. Q: How do I program this board? A: You can program it easily using the standard Arduino IDE! You simply need to add the ESP32 board manager URL to your preferences, install the ESP32 package, and select "ESP32 Dev Module" or "WEMOS D1 R32" from the boards menu. Q: Do I need to install drivers for the CH340 chip? A: If you are using a modern operating system (like Windows 10/11 or recent versions of macOS/Linux), the CH340 drivers are often installed automatically. If your computer does not recognize the board when plugged in, you can easily download and install the free CH340 driver online. Package Includes 1 × ESP32 UNO D1 R32 (CH340) WiFi & Bluetooth Board