Novice asking: I have several $1 Led small (very) lamps from dollar tree and I want to dissemble them and use them but without touching them with my finger. They will be inside a seal cabinet. Instead of me touching to turn on /off, I would like to use something else to mimic my finger touching the metal strips of the lamp. I have a micro lever switch but using this "lamp" has all the cir this would be more interesting. Would a capacitor touching the metal instead of my finger work? If connected to a battery? If so, maybe a battery?
Thanks

 

"In electrical engineering, capacitive sensing (sometimes capacitance sensing) is a technology, based on capacitive coupling, that can detect and measure anything that is conductive or has a dielectric different from air".

Read this link to gain an understanding of capacitive sensing.

They will be inside a seal cabinet

Then you will need a way to expose the sensor. Do these LEDs already include the sensor? No, a capacitor touching a capacitive sensor likely will not trigger the sensor. Maybe if you bridge the sensor yes but just touching one half nope.You need to better explain exactly what you have and what you would like to do.

Ron

 

Thanks Ron for answering: What I have is a $1 6" high Led "lamp" that has two 1.5 volt in series batteries with a metal strip on the base. When you touch it, the light goes on and touch again , light goes off. One Led and not very bright. I took it apart and use a lithium 5 volt battery and it worked for many hours (and still works) so the Led and the circuit can take a little more voltage (at least for a while). What I want to do is to place it inside a 1 cu ft sealed box (not the battery) and have a movement inside the box "trigger" the light on and off based on something touching that metal strip other than me.
thanks

 

Should work. As long as what you bridge the strips with is in line with the link. You have nothing to lose.

Ron

 

What "movement"?

 

Thanks guys - I'm sorry to have started this thread without testing it - I just thought it needed some capacitance of my body but it doesn't. It just needs a connection across the two different strips - skin or metal.
Thanks again