Down Light
Where can I get a switch/sensor that will turn a light when upside down?
This is for a school project. It's a lamp, but to turn it on, you have to turn it upside down. I'm not sure what switch or sensor is out there that can be purchased for a relatively low cost (<$20). It just needs to recognize to turn on the light when the product is upside down.
I don't know if they sell them anymore because they contain (toxic) mercury, but you use to be able to buy silent mercury light switches. They tilted a bulb partially filled with mercury (an electrical conductor) that shorted two conductores to close the switch when you tilted the toggle up. Removing the bulb would certainly provide what you want
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