D1 R2 WiFi ESP8266 Development Board Compatible UNO Program By IDE

The D1 R2 is a mini wifi board based on ESP-8266EX. ? 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0) 1 analog input(3.3V max input) A Micro USB connection A power jack, 9-24V power input. Compatible with Compatible with nodemcu
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Getting Started

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NodeMcu

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Technical specs:
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Microcontroller	ESP-8266EX
Operating Voltage	3.3V
Digital I/O Pins	11
Analog Input Pins	1
Clock Speed	80MHz/160MHz
FLash	4M bytes
Length	68.6mm
Width	53.4mm
Weight	25g

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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,Pull-up	GPIO0
D4	IO,pull-up, BUILTIN_LED	GPIO2
D5	IO, SCK	GPIO14
D6	IO, MISO	GPIO12
D7	IO, MOSI	GPIO13
D8	IO,pull-down, SS	GPIO15
G	Gound	GND
5V	5V	-
3V3	3.3V	3.3V
RST	Reset	RST

*All IO have interrupt/pwm/I2C/one-wire supported(except D0)

Programming:

The D1 R2 has a micro USB for auto programming. Also you can programming it using OTA ? Warnings: ? All IO is work at 3.3V.
? Package included:

1 x D1 R2 WiFi ESP8266 Development Board