Wemos D1 R2 V2.1 - nodeMCU meets Uno meets ESP8266 WiFi - Arduino IDE

New Version!! WeMOS D1 R2 V2.1 WiFi Board

$15.95
QTY: 3 In Stock


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This is Arduino Form factor compatible (The pin mapping is different here when compared to the old D1 product)
You can program this device via the regular Arduino IDE..  Very interesting piece of kit for anyone interesting in
prototyping with Arduino form factor shields while leveraging off the capability of the Wemos ESP8266 Wifi Chip.
You can also treat this board like a nodeMCU and then run Arduino Shields on it. All in all extremely clever and great value for money.
If you are a Maker, an experimenter, a prototyper, I'd highly recommend one.
 

What's new V2.1.0

  •  Use BRT (Bias Resistor Transistor), easier entry into flash mode.
  •  Optimize the circuit, the system is more stable.

 

About D1 R2 V2.1.0

  • based on the ESP-8266EX.
  • Arduino Compatible, you can use it on Arduino IDE.
  • NodeMcu Compatible
  • 11 Digital I/O pins
  • 1 Analog Input pin
  • OTA -- Wireless Upload(Program)
  • On board switching power supply -- Max 24V input, 5V 1A output

 

aeProduct.getSubject()

aeProduct.getSubject()

 

The D1 R2 is a mini wifi board based on the ESP-8266EX.

  • 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

D1 R2

Getting Started

Arduino

 

NodeMcu

 

Technical specs

 

Microcontroller ESP-8266EX
Operating Voltage 3.3V
Digital I/O Pins 11
Analog Input Pins 1(Max input: 3.2V)
Clock Speed 80MHz/160MHz
Flash 4M bytes
Length 68.6mm
Width 53.4mm
Weight 25g

Documentation

Board size

 

d1_r2_size.png

Schematics

 

d1_r2.pdf

Pin

 

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

All of the IO pins have interrupt/pwm/I2C/one-wire support except D0

Programming

 

The D1 R2 has a micro USB for auto programming.
You can also program it using OTA.

Warnings

 

All of the IO pins run at 3.3V.

(IF_598C9A3AB)

SKU IF_598C9A3AB
Brand Logicware

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