Anna Dumitriu, Tom Keene and Alex May recently gave a presentation at 17th International Symposium on Electronic Art in Istanbul demonstrating how to build an Arduino to iPhone/Android interface with GSR sensor.
A GSR sensor connects to an Arduino board. The Arduino generates an audio tone mapped to value of electrical resistance in the skin. A filter removes a 32KHz sampling frequency contained within the output signal, which is received by an iPhone/Android mobile phone via their microphone input.
When a 9v battery is attached, the device takes 1 second to startup, then plays a 3 second startup sequence (composed by Caryl Mann). Two sensors placed on the skin will then measure subtle changes in skin resistance. The sweat glands are controlled by the sympathetic nervous system, so skin conductance can be used as an indication of psychological or physiological arousal.
The build instructions and Arduino code are available for download from theanthillsocial website. We’ve inquired as to the iPhone app used to display the waveform, and will post the reply.
This is a cool example of how to use open source technology to enhance the functionality of commercial closed source hardware at little to no cost.
Via Medicarduino.
You can get a professional GSR sensor for the iPhone from Mindfield, the eSense Skin Response: http://www.mindfield.de/en/products/eSense/eSense-Skin-Response.html
Its 129 Euro or 169 USD, available on their site or Ebay.com and several resellers, also in US
It comes with a free Biofeedback app and export the values via CSV file (email). It is a nice tool for stress relief, lie detection, etc. GSR has so many possibilities.
If you don’t want to build your own, this is a good alternative.
Marius
bagaimana sensor gsr berfungsi .??
i’m looking for the instructions to build the system but i can’t find them anymore.
is there a possibility to get them?
thanks a lot.
theanthillsocial website for obtaining the GSR app for iPhone is no longer available as of 10/3/14.
Are there any other sources?
Thank you.