I'm implementing Capacitive Touch sensor using comparator method.
The hardware configuration was followed exactly as described here.
The output differs depending on the power supply method.
using USB power voltage :
using External supply, Li-poly battery regulated 3.3V :
When battery is used, output is very low. And There is little difference when the touch sensor output is touched or not.
I need high output.
So I tried applying the battery voltage(4.0V) directly to the USB power input.
But, result is same... sensor's value is very low.
I want to resolve this problem.
Why does this happen?
