ESP8266 D1 R2  WiFi Dev Board (Arduino UNO Footprint) Expand

ESP8266 Wemos D1 R2 WiFi Dev Board

9DEVWEMOSD1R2

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The Wemos D1 R2 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.

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The Wemos D1 R2 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 may need a logic level converter such as our 4-channel or 8-channel logic level converter modules.



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

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)

RESOURCES:
PINS:
Board PinFunctionESP-8266 Pin
TX TXD TXD
RX RXD RXD
A0 Analog input (3.3V max) A0
D0 I/O GPIO16
D1 I/O, SCL GPIO5
D2 I/O, SDA GPIO4
D3 I/O, 10k pull-up GPIO0
D4 I/O, 10k pull-up, BUILTIN_LED GPIO2
D5 I/O, SCK GPIO14
D6 I/O, MISO GPIO12
D7 I/O, MOSI GPIO13
D8 I/O, 10k pull-down, SS GPIO15
GND Ground GND
5V 5V -
3V3 3.3V 3.3V
RST Reset RST
All of the I/O pins have interrupt/pwm/I2C/one-wire capability, except for D0

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ESP8266 Wemos D1 R2 WiFi Dev Board

ESP8266 Wemos D1 R2 WiFi Dev Board