I am looking for someone to design a circuit for us.
Here is what it needs to do:
I need a proximity sensor that when active, interrupts a 120-240v 50-60hz auxiliary and that when it senses nothing it allows the auxiliary circuit to close.
IE: When sensor detects object = auxiliary circuit does not work (switch is open)
When sensor does not detect anything = auxiliary circuit works (switch is closed)
The sensor could be between 20-30' away from the circuit it is controlling.
Everything must run on 120-240vac and be as simple and cheap as possible.
Any questions please contact me.
Also please quote on what you would like to be paid for this work.
16 freelancers están ofertando el promedio de $31 para este trabajo
Hello. I think the circuit include relay and proximity,5v converter IC,some components. "The sensor could be between 20-30' away from the circuit it is controlling." what is this mean? Regards.
I would design a module cheap system using a microwave senor sensing up to 10 meters ( 30 feet ) adjustable output then connected to a relay timer module with a universal power supply