WeMos D1 ESP8266 Wifi Uno Board

The WeMos D1 is a WiFi capable ESP8266EX based development board in the form of the common Arduino UNO board format. This board is compatible with the Arduino IDE and with NodeMCU. 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.

*Note: The D1 R2 is a 3.3V device. If you connect it to 5V digital sensors or devices you will need a logic level converter.

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 (3.2V max input)
• 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):
  Analog Input Pins 1
  Clock Speed 80MHz/160MHz
  bytes Length 68.6mm Width 53.4mm
  Pin Function ESP-8266 Pin TX TXD TXD RX RXD RXD A0
  Analog input, max 3.3V
  input A0 D0 IO GPIO16 D1.