Alastair Aitchison is an escape room designer. As such, he creates interactive puzzles that individuals can remedy to progress to the subsequent stage of their quest. The problem is that these puzzles want a rugged enter, as they could take some abuse, and coping with damaged tech isn’t enjoyable for anybody.
The standard options are usually both: bland, within the case of business inputs; or a bit garish in the event you go together with arcade buttons. Aitchison’s answer? Plumbing fixtures, in fact!
Sure, plumbing (water) and electronics don’t typically combine properly. As a substitute of liquid, nonetheless, he’s utilizing these valves to manage the passage of sunshine by copper tubing. An LED is organized on one facet of the valve, whereas an LDR – linked to an analog enter pin by way of a voltage divider–factors towards the sunshine supply from the opposite facet. Because the valve opens, mild hits the LDR and drops the resistance, inflicting a voltage proportional to the mounted and light-dependent resistor on the analog enter.
It’s fairly the intelligent setup, harking back to an opto-isolator that one should buy in a very completely different format to isolate electrical indicators. You may see extra the small print of the setup within the video, together with a demo of the way it works with an Arduino. As famous, you may need to ensure your wires are correctly insulated when utilizing copper pipe, in order that they do not contact its conductive floor and trigger a brief circuit.