Published April 3, 2019 © CC BY-SA

Lie Detector Using Arduino

Catch your lying friend.

BeginnerFull instructions provided1 hour7,739

Things used in this project

Hardware components

Buzzer

LED (generic)

Arduino Nano R3

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Story

Credits - Dante Roumega

Our skin is amazing! It provides a medium for us to experience the sense of touch, it keeps infections out and keeps innards in but I bet you didn't know that our skin changes conductivity depending on many different things one being our mood! It called Electrodermal activity (EDA) and there's a really interesting Wikipedia page you can read here. The basics are that our skin changes its conductivity depending on how we feel.

We start by connect our Arduino to the subject and then connect the Arduino to a computer with the graphing software (I'll go over this in detail later)

We have to start by asking the subject some easy questions we know they will answer truthfully like "what is your name" and "where do you live" to get a baseline and from there we can start asking questions that they may lie about, if they do they would probably feel nervous and then we can read the change in the base line that be established earlier if they lie :D

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To know how to make this thing. Watch our YOUTUBE Video.

Best Buy

----------------------Components------------------------

GearBest

Arduino UNO - https://www.gearbest.com/arduino-uno-_gear/?lkid=15018409

Arduino Full Kit - https://www.gearbest.com/development-boards/pp_211518.html?wid=1433363&lkid=14127055

Treansmitter Fi-a6 - https://www.gearbest.com/rc-car-parts/pp_210798.html?wid=21&lkid=13702638

Quadcopter Kit - https://www.gearbest.com/multi-rotor-parts/pp_294317.html?wid=21&lkid=13702609

Amazon India

Arduino UNO R3 - https://amzn.to/2n8NbWi

Ultrasonic Sensor hc-sr04 - https://amzn.to/2ACHEkl

Arduino Beginners kit - https://amzn.to/2n6LUPj

Wi-Fi Wireless Transceiver Module for IOT ESP8266 - https://amzn.to/2M0ttd8

NodeMcu WiFi Development Board - ESP8266 - https://amzn.to/2LOQgtd

Bluetooth Transceiver Module - https://amzn.to/2M077sj

37 in 1 Sensor Modules Kit for Arduino - https://amzn.to/2vysGpA

Servo Motors 2 - https://amzn.to/2AEeJMO

Arduino Nano V3 with USB Cable - https://amzn.to/2vxcxRo

Quadcopter Kit Quad Copter - https://amzn.to/2ADuzqS

Social Links

Facebook - https://fb.com/robocircuits

Instagram - https://instagram.com/robocircuits

Twitter - https://twitter.com/robocircuits

Instructables - https://www.instructables.com/member/PrashantS161/

Arduino - https://create.arduino.cc/projecthub/robocircuits

Code

Code for Lie Detector

void setup()
{
	Serial.begin(9600);
	pinMode(2, OUTPUT);
	pinMode(3, OUTPUT);
	pinMode(4, OUTPUT);
	digitalWrite(2, HIGH);
	delay(500);
	digitalWrite(3, HIGH);
	delay(500);
	digitalWrite(4, HIGH);
	delay(500);
}

void loop()
{
	if (analogRead(A0) > 60)
	{
		digitalWrite(4, HIGH);
	}
	else
	{
		digitalWrite(4, LOW);
	}
	if (analogRead(A0) > 20)
	{
		digitalWrite(2, HIGH);
	}
	else
	{
		digitalWrite(2, LOW);
	}
	if (analogRead(A0) > 45)
	{
		digitalWrite(3, HIGH);
	}
	else
	{
		digitalWrite(3, LOW);
	}

	Serial.println(analogRead(A0));
	delay(20);
}

Credits

RoboCircuits

39 projects • 222 followers

YouTuber, Explorer, Creator, Programmer, Arduino Lover and Engineer

Contact

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Lie Detector Using Arduino

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Schematics

Schematics for Lie Detector

Code

Code for Lie Detector

Credits

RoboCircuits

Comments

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Lie Detector Using Arduino

Lie Detector Using Arduino

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Schematics

Schematics for Lie Detector

Code

Code for Lie Detector

Credits

RoboCircuits

Comments

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