View source for Geekcreit D1 mini V2.2.0 WIFI Internet Development Board Based ESP8266 4MB FLASH ESP-12S Chip

== Specifications ==

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[[File:Geekcreit D1 mini V2.2.0 WIFI Internet Development Board Based ESP8266 4MB FLASH ESP-12S Chip.jpg|thumb|Geekcreit D1 mini V2.2.0 WIFI Internet Development Board Based ESP8266 4MB FLASH ESP-12S Chip.jpg
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Feature:

* 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
* 1 analog input(3.2V max input)
* a Micro USB connection

 
Package included:
 
1 x D1 mini V2.2.0
2 x Long female pin
2 x Short female pin
2 x Normal pin

[[File:D1-mini-pinout.jpg]]

{| class="wikitable"
|-
|Label
|GPIO
|Input
|Output
|Notes
|-
|D0
|GPIO16
|no interrupt
|no PWM or I2C support
|HIGH at boot
used to wake up from deep sleep
|-
|D1
|GPIO5
|OK
|OK
|often used as SCL (I2C)
|-
|D2
|GPIO4
|OK
|OK
|often used as SDA (I2C)
|-
|D3
|GPIO0
|pulled up
|OK
|connected to FLASH button, boot fails if pulled LOW
|-
|D4
|GPIO2
|pulled up
|OK
|HIGH at boot
connected to on-board LED, boot fails if pulled LOW
|-
|D5
|GPIO14
|OK
|OK
|SPI (SCLK)
|-
|D6
|GPIO12
|OK
|OK
|SPI (MISO)
|-
|D7
|GPIO13
|OK
|OK
|SPI (MOSI)
|-
|D8
|GPIO15
|pulled to GND
|OK
|SPI (CS)
Boot fails if pulled HIGH
|-
|RX
|GPIO3
|OK
|RX pin
|HIGH at boot
|-
|TX
|GPIO1
|TX pin
|OK
|HIGH at boot
debug output at boot, boot fails if pulled LOW
|-
|A0
|ADC0
|Analog Input
|X
|}