PiFace

PiFace Digital 2 (GIT, Python) IO controller is an add-on pi HAT that allows you to control external and internal LEDs, relays, etc. Add in a pi camera and it is basically your own personal mini pi robot. PiFace Digital 2 includes eight inputs, eight outputs, eight LED’s, two relays and four switches and can be used for your Raspberry Pi projects. It is a simple plug on board to your GPIO pins, but does require some additional software and configuration changes. I have included the bare-bones to start accessing your PIFace controller.

Enable SPI

sudo raspi-config

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(The standard apt-get install did not work as mentioned on the PIFace site, I had to use PIP to install it on my pi 3)

Install Required Python Libs

Ref: https://github.com/piface/pifacedigitalio/issues/35 sudo apt-get update sudo apt-get upgrade sudo apt-get install python-pip sudo apt-get install python3-pip Python sudo pip install pifacecommon sudo pip install pifacedigitalio Python3 sudo pip3 install pifacecommon sudo pip3 install pifacedigitalio Samples https://pypi.org/project/pifacedigitalio/ At this point you should be able to create a simple on and off script. pfon.py import pifacedigitalio pd = pifacedigitalio.PiFaceDigital() pd.leds[4].turn_on() pd.relays[0].turn_on() pfoff.py import pifacedigitalio pd = pifacedigitalio.PiFaceDigital() pd.leds[4].turn_off() pd.relays[0].turn_off() Run the first one to turn the LED 0 and Relay 0 On python pfon.py Run the second to turn them off python pfoff.py