WeMos D1 R2 WiFi ESP8266 NodeMCU 4MB Module for Arduino Shield ESP32 microUSB

WeMos D1 R2 WiFi ESP8266 NodeMCU Module for Arduino

Professional development module based on the ESP8266 chip, offering integrated WiFi connectivity. The board is fully compatible with the Arduino IDE environment and NodeMCU software. The physical pin layout matches the popular Arduino Uno microcontroller, enabling hassle-free connection of dedicated shields.

The board is equipped with a microUSB connector for programming, and communication is handled by the CH340 UART controller. The module offers 11 digital inputs/outputs, 10 PWM channels, and 1 analog input, providing broad integration options. The chip can be powered at 3.3V.

Key technical features

• Integrated chip: ESP8266 with WiFi support
• Flash memory: 4 MB
• I/O ports: 11
• PWM outputs: 10
• Analog inputs: 1 - on the ADC channel
• Supported interfaces: UART, I2C, 1-Wire, SPI
• Additional features: external interrupt support
• USB controller: CH340 UART with microUSB connector
• Platform compatibility: for Arduino, for ESP8266

Example applications

• Home automation systems based on wireless communication
• Weather stations transmitting measurement data over WiFi
• Internet of Things (IoT) projects requiring network connectivity
• Remotely controlled actuators and sensors
• Device prototyping using ready-made Arduino Uno shields

Benefits

• Fast and convenient programming thanks to the integrated microUSB connector
• Easy project expansion thanks to physical compatibility with the Arduino Uno form factor
• Ability to use a huge library base for the Arduino IDE
• Stable operation in networked projects thanks to the proven ESP8266 chip
• Time savings during prototyping by using standard shields