Right now I have two power supplies, but in the video they were running from the same PSU. Power was supplied to the +5v and Gnd Connector on the PiFace (i don't use the micro USB at all) and to pins GND & JDVCC of the jumper header - I removed the jumper completely. (the VCC pin is NOT connected) O...
Triggers on Low, so can be interfaced directly with the PiFace outputs. - I'm using the additional power supply (remove the jumper, and send 5v on pins 1&3) instead of relying on the Pi-face.
Gordon whilst I fully appreciate your suggestion, and I broadly understand your last sentence, I wouldn't have a clue where to start with building my own. Its been over 10 years since I have done any electronics, (but its slowly starting to come back :) I bought the PI-Face to see if i could drive s...
The board you have posted activates when the pins are taken to gnd, so I think that board will work with the piface without any modifications. (You may need to power it seperatly if you want to run all 8 relays at once-I assume there is an aditional power connector) The relays I have all need +5v to...
Is it possible to read the state of an output? I'm very new to python and the Pi, but at present i am trying to keep tack of my outputs using variables to record the state of each pin. What i want to do is instead query (somehow) the state so that I can have multipul processes updating the outputs o...