ESP8266 ESP-12 ESP12 WeMos D1 Mini Module Wemos D1 Mini WiFi Development Board Micro USB 3.3V Based On ESP-8266EX 11 Dig

The D1 mini is a mini wifi board based on ESP-8266EX. ESP-12F

# 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

# Compatible withArduino

# Compatible with nodemcu

Technical specs

Microcontroller = ESP-8266EX

Operating Voltage = 3.3V

Digital I/O Pins = 11

Analog Input Pins = 1

Clock Speed = 80MHz/160MHz

FLash = 4M bytes

Length = 34.2mm

Width = 25.6mm

Weight = 10g

Pin Function ESP-8266 Pin

TX TXD TXD

RX RXD RXD

A0 Analog in(max 3.3V) A0

D0 IO GPIO16

D1 IO, SCL GPIO5

D2 IO, SDA GPIO4

D3 IO,Pull-up GPIO0

D4 IO,pull-up,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

Programming

The D1 mini has a micro USB for auto programming.

Also you can programming it using OTA

Warnings

All IO is work at 3.3V.