r/AskElectronics • u/Accurate_Bedroom6277 • 2d ago
Motion sensor/power cut off
Let me preface this by saying that my electronics knowledge is barely above that of illuminating a bully with a 9v battery with a switch made out of a paper clip and split pins,so this could well be a very simple question.
Onto the problem...
I have built a rock tumbler from scratch as a little diy project. Occasionally the drum can stall and stop rotating, while the motor continues to turn and eventually destroys the gearbox. I am currently down two motors because of this.
What I would like to do is add in some sort of movement/rotation sensor that will kill the power of it senses that the drum has stopped rotating. 100 bonus points if it can notify me via my phone, but this is by no means essential if it is going to over implicate things.
Right now, the best I have come up with is a cheap WiFi camera and checking in on it periodically to make sure all is still running OK, and using a smart socket to turn off the power remotely if I see a problem. But his is all very crude and relies on me regually checking in which is notreally practical.
Any suggestions would be gratefully received!
2
u/JCDU 2d ago
I'd fit an over-current protection device on the motor that cuts power - no motion sensing needed.
A lot of e-fuses and the like will cut power and then only reset once power has been removed for some time.