HLT Control, Hardware – Raspberry Pi
So, continuing on from my previous post on starting to use the Raspberry Pi for brewery control, this is a post about the interface aspects of HLT control. There’s a bit of circuitry here to interface the GPIO ports of the Pi to a mains powered element – the Pi shouldn’t be switching mains voltages and currents without some isolation – there’s far too much risk involved, both for the Pi and for the brewer… Usual, obvious disclaimer – folow these instructions at your own risk – you are responsible for your own actions; if you’re unsure, get someone to check …