Changes

Primarily researched and prototyped by [[User:pdp7|Drew Fustini]] after handover from Phil Strong.  Please check with Drew for any clarification.

Primarily researched and prototyped by [[User:pdp7|Drew Fustini]] after handover from Phil Strong.  Please check with Drew for any clarification.

== Prototype ==

== Current GSR sensor prototype ==

Primary source of prototype is: [http://produceconsumerobot.com/truth/ Truth Wristband]

The prototype is based heavily on the Truth Meter circuit from: http://produceconsumerobot.com/truth/

Sean Montgomery, owner of the above site, has a GSR circuit that uses no micrcontroller and a low & high pass filter in the circuit to create a 0.48Hz to 4.8Hz band pass.

Sean Montgomery, owner of the above site, built a GSR circuit that uses no micrcontroller and a low & high pass filter in the circuit to create a 0.48Hz to 4.8Hz band pass.

Schematic:

Schematic:

http://produceconsumerobot.com/truth/content/GSR_schematic_04.png

http://produceconsumerobot.com/truth/content/GSR_schematic_04.png

This circuit was created by Sean for an earlier version of his Truth Wristband project.  This circuit is used at as the biosensor array GSR prototype as it produces a simple analog output that is already filtered.  This reduces the complexity of the Arduino code and the graphing display application on the computer.

This circuit was created by Sean for an earlier version of his Truth Wristband project.  This circuit, referred to as the Truth Meter, is used at as the biosensor array GSR prototype as it produces a simple analog output that is already filtered.  This reduces the complexity of the Arduino code and the graphing display application on the computer.

The circuit is featured in Make Magazine Vol 26 (Spring 2011) in the biosensor article written by Sean.

The Truth Meter circuit is featured in Make Magazine Vol 26 (Spring 2011) in the biosensor article written by Sean.

Make Magazine is now selling a kit on Maker Shed for this circuit:

* Make Magazine: The Truth Meter

 

** http://makeprojects.com/Project/The-Truth-Meter/703/1

http://blog.makezine.com/archive/2011/04/new-in-the-maker-shed-galvanic-skin-response-kit.html

 

== Truth Wristband ==

== Truth Wristband ==