I have an "U" shaped metal profile that is 2 meters long each side is 1.5 cm. It is sprayed with acrilic color. and i want to use it as indirect light profile/enclosure for a 12v Led strip.
While playng with the capacitve touch libs of the attiny85 i tried to connect
one sensing pin to the above mentioned profile getting really perfect results.
Altough the testing was made without powering the led strip, leaving so a all the working electronic circuitry outside of the "U" profile.
As i attached the ledstrip to the active circuit the touch did not work anymore.
Basically the sensing is disturbed by the ledstrip.
There is no way to get it to work if there is something elecronically active inside the profile.
Then i made another test.
I put two "U" shaped profiles side by side, paralell at 5cm distance. One of the profile contained the circuit & led strip and the second was connected to the Touch sensing pin with no electronics parts inside. this worked again.
Is there a way i could properly insulate the led strip & the circuit from not interferring with the enclosures capacitive abilities?
The plan is to use the whole enclosure as a big touch sensitive on/off switch.
EDIT AS REQUESTED
Video showing the working capacitive surface. https://youtu.be/I-JkjfGwqEo
Video showing the same circuit but powering the leds inside the profile. https://youtu.be/Mz7KTxXNz5Q
As you can see in the videos avbove the circuit won't work if the leds are inside the the profile.. i made verious other tests and as soon i add the ledstrip stored inside the metal "U" the EM field is disturbed.
I apologize for the quality of the following diagram. i'm not good at drawing diagrams.I also totally don't know what software i could use to draw a diagram. Here is how it should look like