Arduino Lie Detector

Someone has been eating my cookies! Thankfully Arduino is here to help find out who it is.

Aug 14, 2016

270644 views

156 respects

Components and supplies

1

LED (generic)

1

Cables

1

Resistor 2K

1

Arduino Nano R3

1

5 mm LED: Red

1

5 mm LED: Green

Tools and machines

1

Soldering iron (generic)

1

Soldering Wire

1

Hot glue gun (generic)

Apps and platforms

1

Arduino IDE

Project description

Code

PolyGraph.ino

arduino

Paste the code into the arduino ide

PolyGraph.ino

arduino

Paste the code into the arduino ide

Downloadable files

Wiring diagram

Wiring diagram

Comments

Only logged in users can leave comments

rumbleleon

9 months ago

Hi! Can I get some help with this project? Contact me at luciannicola12@gmail.com if you'd like to help me better understand why it's not really working for me

pratyushchaudhary

a year ago

what is the use of orange led

cuppermo

a year ago

How much for the Kit?

cuppermo

a year ago

This is Going to Be very Useful, Thanks by the Way you need 1,000 Followers not 8 Followers, Keep up the Great work!

umc

a year ago

its real or lie

umc

a year ago

its real or lie

puglord3000

a year ago

I'm having trouble with uploading the code, it will randomly say that something went wrong and it won't tell me why. I'm a beginner at this stuff so I need help, please.

travattanz

a year ago

Hello, the resistance values hover are very low. They don't reach the threashhold, like 2 or 3 sometimes, that's peak , any help?

iammscls

2 years ago

Very cool!

Anonymous user

2 years ago

I have made it same but my serial plotter is not showing proper reading and the LEDs a blinking simultaneously.. Please help

Anonymous user

2 years ago

i like it thank you

Anonymous user

2 years ago

Can I use 10k resistor instead of 2k.

BnTie

2 years ago

Nice! but why have the yellow LED? can someone be half lying? I really like this, thanks for sharing.

BnTie

2 years ago

Or do you use the yellow for when the machine is unsure?

Anonymous user

2 years ago

I want to ask dude, what's the point of the LED here?

Anonymous user

2 years ago

-

Anonymous user

2 years ago

it is minus

BuildItDR

2 years ago

great question, its to see the data range without a computer

Anonymous user

2 years ago

Good idea ....

Anonymous user

2 years ago

can i use it with Arduino uno?

mbw1

2 years ago

does it work with uno

Sebasop12

2 years ago

so nice project

Anonymous user

2 years ago

Hi there Excellent circuit but i need some help here please.I get a Board at com 7 is not available.I am new to this and do not know what that mean.If anyone can assist,i will appreciate the help. Thanks.Regards Marinus

Anonymous user

2 years ago

Sir,is there any sensor in this project? Or not,how does it work without a sensor

Anonymous user

2 years ago

can i use arduino uno instead of nano and plz share the codes for uno

BuildItDR

2 years ago

the code is the same but this should help. https://youtu.be/nbD2j51VGF0

katekbrown

2 years ago

i did not think that the coding would be so simple.... your a geinuios

Anonymous user

2 years ago

i will try it on my dumb sister

Anonymous user

2 years ago

hi and thanks a lot for this project i wanna do this project with pulse sensor could you please help me?

vijit

2 years ago

hey awesome project , but i don't get how to make the fingers can you please tell :(

Anonymous user

2 years ago

Hi, fantastic project, congrats! Super-newbie question (first contact ever with Arduino!): you use "Arduino Nano R3" but it looks like it's currently retired, not possible to buy. What should I buy instead, and would these instructions still apply? Thanks a lot!

Anonymous user

2 years ago

everything is great but how do you stick the LEDs into the cardboard, i thought you put them on a breadboard and it's not going to fit the project

Anonymous user

2 years ago

I like your idea and was going to help my 3rd grade daughter to build this for a project for school. I am new to this world but old to computers. Can I use a arduino uno for this project? If so what would be the difference in wiring, if any. How would I wire a 16 x 2 lcd up to display results also?

vijit

2 years ago

i don't know about the display but the ports should be the same on both boards

Anonymous user

2 years ago

Thank YOU it works great. the coolest project ever. please tell me if you'd like to upgrade this to plant bio feedback to research their consciousness. iddo111@gmail.com

Anonymous user

2 years ago

Can I use Arduino UNO for this???

Anonymous user

2 years ago

kya project bahiye hai bhaiya , maa kasam maza aagya ,

Anonymous user

2 years ago

i like it thank you

Anonymous user

2 years ago

i like it thank you

Anonymous user

2 years ago

it was very helpful

Anonymous user

2 years ago

nice project bro really cool doing it in school

BuildItDR

2 years ago

Thanks, good luck with the project!

Anonymous user

2 years ago

glogs

Anonymous user

2 years ago

Perfect.....I think I need here in SA....How much can you sell the copyrights?

Anonymous user

2 years ago

Do you need a breadboard for this project

Anonymous user

2 years ago

glog

katekbrown

2 years ago

no not if you have a soldering iron and solder

Anonymous user

2 years ago

hi I am prasanna I am new to arduino and mainly my question is can I use a arduino UNO insted of NANO???

Anonymous user

2 years ago

Wow !!! I Cant believe I did it !!! but I change the sensitivity and add a couple more LEDS. It works very great. Just I don't know how to see the graph.

Anonymous user

2 years ago

Get the latest version of the Arduino software, which I think is 1.6.8. Then, load the program onto your uno, mini, etc., and keep your USB connected to your computer. With the Arduino IDE displayed on your computer, click "tools" in the menu. You will see "Serial Plotter" as one of the selections. Select this and you will see the plotter come up with a straight horizontal line until you place your fingers on the sensor pads. Good luck!

Anonymous user

2 years ago

Bro did it worked..!

Anonymous user

2 years ago

Hello, I did the editing on my arduino Uno, everything seems to work. I have 1023 that appears on the plotter serie when I connect my 2 son and leds are ok too. But when I put my fingers on the son (with or without aluminum) I have no current that passes. The serial monitor remains at 0 .... someone has been faced with this problem? thank you

Sebasop12

2 years ago

goood i like it

Anonymous user

2 years ago

Hey ,how to power it up? I mean how can i connect batteries on the arruino?

katekbrown

2 years ago

you need a wire

Anonymous user

2 years ago

nice project

Anonymous user

2 years ago

Nice Idea

Anonymous user

2 years ago

Very nice project.

Anonymous user

2 years ago

Great project! I changed it a little: added 330k resistors to the LEDs so they don't burn up, changed the A0 resistor from 2K to 100K to produce a wider range of response, used common tacks for finger pads, and added another LED for more range. Thanks for the effort!

Anonymous user

2 years ago

Excuse me, do you know how he get 60/40/20 internal resistor? Thanks!

Anonymous user

2 years ago

i love it

Anonymous user

2 years ago

A doubt ,that we are not using any sensor .So will it work properly in detecting lie.Please help me out in this ,because we chosen this as our course project.If no what type of sensors we have to use?

jmalzoni

2 years ago

Be careful when doing this project. After having fun and testing the whole set up for several minutes in a row, I just started to feel a small pain in one of the fingers so after removing the finger clips, surprise surprise: tinfoil had burned a bit my skin. Just be aware of risks.

Anonymous user

2 years ago

what are the use of the three led used... mention it one by one please?

Anonymous user

2 years ago

Hi! I was trying to do the project but the code is not being uploaded on my Arduino uno R3( made in China) board. Does the new version of arduino (1.6.8) do not work on the specified board? Please help.....

Anonymous user

2 years ago

nuiceeeeeee very goooooodddddd yeegyf

Anonymous user

2 years ago

f-

Anonymous user

2 years ago

why? where who whicjh how ???\\

Anonymous user

2 years ago

what

Anonymous user

2 years ago

Hello, i'm new to Arduino and robotics and I would like to ask if I need any sensors for the project. And I would also like to know what wires you attached to the Arduino.

Anonymous user

2 years ago

Please what type of cables am I to get when doing these projects..... please I need a quick response

Anonymous user

3 years ago

Can I use Arduino UNO for this???

Anonymous user

3 years ago

Hi there Excellent circuit but i need some help here please.I get a Board at com 7 is not available.I am new to this and do not know what that mean.If anyone can assist,i will appreciate the help. Thanks.Regards Marinus

Anonymous user

3 years ago

Sir,is there any sensor in this project? Or not,how does it work without a sensor

Anonymous user

3 years ago

hi I am prasanna I am new to arduino and mainly my question is can I use a arduino UNO insted of NANO???

Anonymous user

3 years ago

nuiceeeeeee very goooooodddddd yeegyf

Anonymous user

2 years ago

f-

Anonymous user

2 years ago

what

Anonymous user

2 years ago

why? where who whicjh how ???\\

Anonymous user

3 years ago

Hello, i'm new to Arduino and robotics and I would like to ask if I need any sensors for the project. And I would also like to know what wires you attached to the Arduino.

Anonymous user

3 years ago

i love it

Anonymous user

3 years ago

i will try it on my dumb sister

Anonymous user

3 years ago

kya project bahiye hai bhaiya , maa kasam maza aagya ,

mawethu_baich

4 years ago

Perfect.....I think I need here in SA....How much can you sell the copyrights?

Anonymous user

4 years ago

everything is great but how do you stick the LEDs into the cardboard, i thought you put them on a breadboard and it's not going to fit the project

rekhilrajeeb

4 years ago

what are the use of the three led used... mention it one by one please?

Anonymous user

4 years ago

Thank YOU it works great. the coolest project ever. please tell me if you'd like to upgrade this to plant bio feedback to research their consciousness. iddo111@gmail.com

Sebasop12

5 years ago

so nice project

Anonymous user

5 years ago

I have made it same but my serial plotter is not showing proper reading and the LEDs a blinking simultaneously.. Please help

Anonymous user

5 years ago

Good idea ....

Sebasop12

5 years ago

goood i like it

Anonymous user

5 years ago

Very nice project.

architavtans

5 years ago

it was very helpful

Anonymous user

5 years ago

A doubt ,that we are not using any sensor .So will it work properly in detecting lie.Please help me out in this ,because we chosen this as our course project.If no what type of sensors we have to use?

Anonymous user

6 years ago

Hello, I did the editing on my arduino Uno, everything seems to work. I have 1023 that appears on the plotter serie when I connect my 2 son and leds are ok too. But when I put my fingers on the son (with or without aluminum) I have no current that passes. The serial monitor remains at 0 .... someone has been faced with this problem? thank you

jmalzoni

6 years ago

Be careful when doing this project. After having fun and testing the whole set up for several minutes in a row, I just started to feel a small pain in one of the fingers so after removing the finger clips, surprise surprise: tinfoil had burned a bit my skin. Just be aware of risks.

mbw1

6 years ago

does it work with uno

Anonymous user

6 years ago

can i use it with Arduino uno?

katekbrown

6 years ago

i did not think that the coding would be so simple.... your a geinuios

vijit

6 years ago

hey awesome project , but i don't get how to make the fingers can you please tell :(

Anonymous user

7 years ago

Hi! I was trying to do the project but the code is not being uploaded on my Arduino uno R3( made in China) board. Does the new version of arduino (1.6.8) do not work on the specified board? Please help.....

Underworld_Hacker

7 years ago

Hey ,how to power it up? I mean how can i connect batteries on the arruino?

katekbrown

2 years ago

you need a wire

Anonymous user

7 years ago

Can I use 10k resistor instead of 2k.

Anonymous user

7 years ago

Do you need a breadboard for this project

katekbrown

2 years ago

no not if you have a soldering iron and solder

Anonymous user

2 years ago

glog

Anonymous user

7 years ago

nice project bro really cool doing it in school

BuildItDR

2 years ago

Thanks, good luck with the project!

Anonymous user

7 years ago

glogs

BnTie

7 years ago

Nice! but why have the yellow LED? can someone be half lying? I really like this, thanks for sharing.

BnTie

2 years ago

Or do you use the yellow for when the machine is unsure?

Anonymous user

8 years ago

hi and thanks a lot for this project i wanna do this project with pulse sensor could you please help me?

Anonymous user

8 years ago

I like your idea and was going to help my 3rd grade daughter to build this for a project for school. I am new to this world but old to computers. Can I use a arduino uno for this project? If so what would be the difference in wiring, if any. How would I wire a 16 x 2 lcd up to display results also?

vijit

2 years ago

i don't know about the display but the ports should be the same on both boards

Anonymous user

8 years ago

I want to ask dude, what's the point of the LED here?

BuildItDR

2 years ago

great question, its to see the data range without a computer

Anonymous user

2 years ago

it is minus

Anonymous user

2 years ago

-

Anonymous user

8 years ago

Hi, fantastic project, congrats! Super-newbie question (first contact ever with Arduino!): you use "Arduino Nano R3" but it looks like it's currently retired, not possible to buy. What should I buy instead, and would these instructions still apply? Thanks a lot!

cliptwings

8 years ago

Great project! I changed it a little: added 330k resistors to the LEDs so they don't burn up, changed the A0 resistor from 2K to 100K to produce a wider range of response, used common tacks for finger pads, and added another LED for more range. Thanks for the effort!

Anonymous user

2 years ago

Excuse me, do you know how he get 60/40/20 internal resistor? Thanks!

Anonymous user

8 years ago

Wow !!! I Cant believe I did it !!! but I change the sensitivity and add a couple more LEDS. It works very great. Just I don't know how to see the graph.

Anonymous user

2 years ago

Bro did it worked..!

cliptwings

2 years ago

Get the latest version of the Arduino software, which I think is 1.6.8. Then, load the program onto your uno, mini, etc., and keep your USB connected to your computer. With the Arduino IDE displayed on your computer, click "tools" in the menu. You will see "Serial Plotter" as one of the selections. Select this and you will see the plotter come up with a straight horizontal line until you place your fingers on the sensor pads. Good luck!

Anonymous user

8 years ago

i like it thank you

Anonymous user

8 years ago

Nice Idea

Anonymous user

8 years ago

nice project