Hi. I have airbed (air mattress).
Would like to have sensor which can detect if i placed on it.
Tried to do something like by layers:
air bed
aluminium foil layer connected to analog pin/vcc/gnd (tried differect combination)
textile
aluminium foil layer connected to - analog pin/vcc/gnd (tried differect combination)
wooden floor
When i just placed on bed values goes up but after some time goes down even less then arranger value.
And one more issue: analog PIN gives sinusoid values.
Maybe need some capacitor and coaxial cable... (i'm noob about about electronic btw).
Any suggestion how to detect when i placed on air bed?
Thanks