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Wemos D1 R2 WiFi ESP8266 Board

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WeMos- D1 R2 WiFi ESP8266 Development Board is programmable via Arduino IDE. This is an ESP8266 based WiFi enabled microprocessor unit on a Arduino UNO footprint. That means the board looks and works (in most cases) like an UNO. Several shields, sensors and output devices that are manufactured for the Arduino platform will work on the WeMos-D1 R2 with the added advantage of builtin WiFi.

  • 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except for D0)
  • 1 analog input(3.2V max input)
  • Micro USB connection
  • Power jack, 9-24V power input.
  • Compatible with Arduino
  • Compatible with nodemcu
Pin Function ESP-8266 Pin
TX TXD TXD
RX RXD RXD
A0 Analog input, max 3.3V input A0
D0 IO GPIO16
D1 IO, SCL GPIO5
D2 IO, SDA GPIO4
D3 IO, 10k Pull-up GPIO0
D4 IO, 10k Pull-up, BUILTIN_LED GPIO2
D5 IO, SCK GPIO14
D6 IO, MISO GPIO12
D7 IO, MOSI GPIO13
D8 IO, 10k Pull-down, SS GPIO15
G Ground GND
5V 5V
3V3 3.3V 3.3V
RST Reset RST

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