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 on-board 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.
Note: The D1 R2 is a 3.3V device. If you connect it to 5V digital sensors or devices you may need a logic-level converter such as our
logic-level converter modules.