Pi-GPIO-Server | Raspberry Pi with access to the digital GPIO pins

From the project directory Pi-GPIO-Server/, run the following command:.
A config file config/pins.yml is used to define the initial setup for pins that will be accessible to the API. If a pin is not defined here it will not have a URL route in the API. For full documentation about available GPIO input pin configurations see the documentation.
Add a numbered element for each pin to enabled
name - This is an optional text label you can use to identify your pins. If present, this value will be displayed on the included GPIO server page.
mode - This controls whether the pin will be used for input or output. Accepted values are: IN, OUT. (Required)
initial - This controls the starting value of the pin. Accepted values are: LOW, HIGH. (Optional - defaults to LOW)
resistor - This controls the software defined pull up/pull down resistor available in the Broadcom SOC. Accepted values are: PUD_UP, PUD_DOWN. (Optional - defaults to none)
event - This can only be used in combination with a pin set to input mode (mode: IN). If defined, the pin will use a socket.io connection and push data to the client when an event is detected. Accepted values are: RISING, FALLING, BOTH.
bounce - This can be used when an event is defined to prevent multiple callbacks being fired accidentally. The value is the number of milliseconds to wait before detecting another event.
Pin 18 as an output pin
Pin 23 as an input pin registered with a RISING event.