I’d like to use water detection cable with the GrovePi to make a flood sensor. A small (<1cm) puddle of water at any point along the length should trigger it. I’m hoping that all the Grove needs to do is watch for a closed circuit across the two wires.
Which port should I connect it to?
Which python project should I use as a starter? I’m comfortable coding to the sensors in the starter kit.
As these are bare wires how much current could be running down them? Would that give a zap or tingle to anyone accidentally touching it whilst live? Could it touching the wrong thing damage the Grove somehow?
For cable I’d be looking at the WDC2 from here:
Annelid 0.4mm diameter Stainless Steel
7Ω per metre per sensor wire (14Ω per cable metre)