I've just built a two piece aluminium foil capacitive sensor for use as a touch slider.
The touch sensor is controlling an RGB LED strip, adjusting it's brightness.
While I am working in the Arduino IDE I have good values coming from the touch slider. However once I unplug my Nano and then apply 5v to the Vin pin the touch sensor no longer works.
Seeing I can't see the serial monitor while the Nano is not connected to the laptop, I am unsure how to go about debugging it. Any suggestions would be greatly appreciated.
Can anyone suggest what might be at play here?