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====== Wemos D1 Mini ======

{{ :pinout:esp8266-wemos-d1-mini-pinout-gpio-pin.png?600 |}}

^Label	^GPIO	^Input	^Output	 ^Notes^
|  D0  |GPIO16	|no interrupt|no PWM or I2C support	|<color white/orange>HIGH at boot</color> \\ used to wake up from deep sleep|
|  D1  |GPIO5	|<color white/green>OK</color>|<color white/green>OK</color>|often used as SCL (I2C)|
|  D2  |GPIO4	|<color white/green>OK</color>|<color white/green>OK</color>|often used as SDA (I2C)|
|  D3  |GPIO0	|pulled up|<color white/green>OK</color>|connected to FLASH button \\ boot fails if pulled LOW|
|  D4  |GPIO2	|pulled up|<color white/green>OK</color>|<color white/orange>HIGH at boot</color> \\ connected to on-board LED \\ boot fails if pulled LOW|
|  D5  |GPIO14	|<color white/green>OK</color>	|<color white/green>OK</color>	|SPI (SCLK)|
|  D6  |GPIO12	|<color white/green>OK</color>	|<color white/green>OK</color>	|SPI (MISO)|
|  D7  |GPIO13	|<color white/green>OK</color>	|<color white/green>OK</color>	|SPI (MOSI)|
|  D8  |GPIO15	|pulled \\ to GND	|<color white/yellow>OK</color>|SPI (CS) \\ Boot fails if pulled HIGH|
|  RX  |GPIO3	|<color white/yellow>OK</color>|<color white/red>RX pin</color>|<color white/orange>HIGH at boot</color>|
|  TX  |GPIO1	|<color white/red>TX pin</color>|<color white/yellow>OK</color>	|<color white/orange>HIGH at boot</color> \\ debug output at boot \\ boot fails if pulled LOW|
|  A0  |ADC0	|<color white/green>Analog Input</color>	|<color white/red>X</color>|
[[https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/|Source]]