The D1 R2 is a WiFi capable ESP8266EX based development board in the form of the Arduino UNO board format.

This board is compatible with the Arduino IDE and with NodeMCU. Tutorials for each can be found in the resources section below.

The D1 R2 also features an onboard switching power supply which allows you to power the board from a power supply up to 12V.

We offer a board similar to this called the Wemos D1 Mini that is much smaller in size and breadboard-compatible.

PRODUCT CONTENTS:

1 piece – Wemos D1 R2 Version 2.1 ESP8266 Development Board
More than enough straight male header pins to solder into all of the open through-holes on the board

All of the I/O pins have interrupt/PWM/I2C/one-wire capability, except for D0

SPECIFICATIONS:

• Microcontroller: ESP8266EX
• Operating Voltage: 3.3V
• Digital I/O Pins: 11 (all I/O pins have interrupt/PWM/I2C/one-wire capability, except for D0)
• Analog Input Pins: 1
• Flash Memory: 4MB
• On-Board Switching Power Supply
• Input Voltage Range: 9V to 12V
• Output: 5V at 1A Max
• Board Dimensions: 68.6mm x 53.4mm (2.701″ x 2.102″) / Long x Wide
• Weight: 21.8g (0.769oz)

Tutorials:
Getting Started Tutorial (Using Arduino IDE)
Arduino IDE Board Manager URL: http://arduino.esp8266.com/stable/package_esp8266com_index.json
Getting Started Tutorial (Using NodeMCU)
CH340G Driver:
You will need to install a driver for your computer to recognize the onboard CH340G USB to serial converter.
If you are using Codebender online you do not need to install a driver.
Windows Driver (automatic installer)
Mac OS Driver
Installation instructions
Linux Driver
ESP8266:
ESP8266EX Datasheet
ESP8266 Technical Reference
ESP8266 AT Instruction Set
ESP8266 AT Command Examples