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Addicore  |  SKU: AD286

ESP8266 D1 R2 V2.1.0 WiFi Dev Board (Arduino UNO Footprint)

$10.45
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Ships Same Day if Ordered Before Noon Pacific Time

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 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
  • 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 Pin Function ESP8266 Pin
TX TXD TXD
RX RXD RXD
A0 Analog input 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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