4 ms·
You probably don’t need an ultrasound sensor or anything fancy for detecting water levels. Get a couple of strips of conductive metal which isn’t going to rust,
by jon-wood 6y ago
You probably don’t need an ultrasound sensor or anything fancy for detecting water levels. Get a couple of strips of conductive metal which isn’t going to rust, then stick them down either side of the water tank, and finally hook the top of those strips into an ESP8266 or similar. When water level is above the required point the water will complete the circuit, and when it drops below the circuit will be broken.
- TeMPOraL 6y agoWill it do so even after going through whatever filtering scheme you're using? I was under the impression that clean water is a bad conductor.
- jon-wood 6y agoI had no idea about that, but some cursory Googling seems to indicate this property is only really true of fully purified water - either via distillation or turning it into steam first. I suspect that all but the most impressive water filters are still going to give you conductive water, but regardless it’s an easy thing to test.
- lostlogin 6y agoThanks for the idea. There are two water levels that could be monitored, the stainless reservoir and the brass boiler. Despite the metal I think it would still work for the reservoir, because this seems to be how new models work. It’s the boiler I mainly want to monitor however, and it is very hot and is pressurised.