KAFAYA ABDIRAHMANPHYSICAL COMPUTING

� A lie detector is a machine which monitors changes in the human body and estimates if a someone is telling a lie.

� We set the machine to a normal, where someone is telling truth, from that it can read change.

� Lie detectors consider many factors about the human body.

� My lie detector works because of something called Galvanic Skin response.

� This is how moist the skin is.

� When people lie they sweat a tiny little bit and we can make a machine to read this change in moisture

� As we become more moist we are more conductive

� We can read change of electricity with Arduino board

� INPUT 1: Subject touching fingers on probes.

� INPUT 2: Examiner adjusts potentiometer to set normal conductivity level.

� OUTPUT 1: RGB LED (like book example) RED = LIE, BLUE = ADJUST, GREEN = AVERAGE

� OUTPUT 2: Sound, Buzzer or speaker on when subject tells a LIE

� I used www.makercase.com

� From this I created a laser cutter plan

� First I had to add my design

� I used Text in Adobe Illustrator to add my name and design to makercase plan

� I created a SVG file laying out the whole case

� My final Illustrator design 11/12/2017, 21(30

Page 1 of 2file:///Users/pete/Downloads/KafayaBigBox.svg

!! LIE DETECTOR !!FINE TUNE!

!! LIE DETECTOR !!PLACE FINGERS!

LIE’o’Meter

LIE’o’Meter

LIE DETECTORKAFAYA ABDIRAHMAN

BY

physical COmputing

!!

� I had to solder on wire for potentiometer, LED and speaker to connect to breadboard.

� I opened box and attach wires, then use small bolts to keep shut. I can open and close my box to fix mistakes.

FINAL ASSEMBLY

Final Assembly.� Final Video of the project

https://youtu.be/OmyEYrA__7Y