Arduino Nano Lie Detector Polygraph
https://www.youtube.com/watch?v=HMHFfJFrfWk
Analog Vumeter x2 https://amzn.to/2EPgXez Arduino Nano https://amzn.to/3ih8mQw Heart Rate sensor https://amzn.to/2Dq3Os0 Jumper cables Aluminum foil Switch Buzzer 5V power source