I want to make a lie detector with my Arduino.
I know that when people lie, their skin is supposed to change its resistance.
What kind of change are we talking about? I know I can monitor the light in a room with a photoresistor, but how would I go about doing this?
Fun Facts about Pi Day The Pi Day Pie Contest is open until March 31st. Share a pie recipe to win a stand mixer. There's even a sp…