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Arduino lie detector

Posted on Friday, April 20th, 2012 in Arduino, how-to, measurement by the machinegeek


William Finucane of revoltlab posted this easy lie detector project on the Mad Science website.

The hardware consists of nothing more than an Arduino, a 10K resistor, wire and some tin foil. (You didn’t use ALL your foil for your hat, did you?) The device operates on the galvanic skin response (GSR) principle and detects changes therein via a foil band around your finger. The ends of the band are connected between the two open leads as depicted in the above diagram, with the Arduino taking readings on Analog pin 0. Readings are displayed on your PC as a graph using Processing.

All source code (both Arduino and Processing sketches) is contained in the Arduino Communications/Graph example within the Arduino IDE.

Via Mad Science/wonderhowto.

This entry was posted on Friday, April 20th, 2012 at 9:25 pm and is filed under Arduino, how-to, measurement. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Arduino lie detector”

  1. jade says:

    Ok so i have tried many times to put the processing code from arduino into processing it doesn’t say that there are any errors but when i run it it doesn’t bring up a graph please get back to asap its a project that will be graded and i can’t figure out this part

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