Skin Conductance code + Processing graph code

Using Arduino Programming Questions
#1

Hello everyone,

It is my first post here and I would like to introduce myself, I’m an Audio Engineer, currently studying Electronics with a lot of interest in measuring human emotions.

I’m getting together a EEG setup which I would like to compliment with an GSR sensor.

I got myself the Grove GSR sensor but because of my limited knowledge in programming I’m struggling to get it working properly.

I have a couple of questions and I hope someone will be able to help me here.

I’m able to get a raw GSR output into the Arduiono via the AnalogReadSerial, however the signal I’m getting is a skin resistance read, I would like to convert it into a conductance reading which I know is 1/R.

How would I express that in Arduino code?

My next question is about the unit conversion, standard unit for skin conductance is micro Siemens, how would I be able to code the arduiono to display the reading in this unit?

wiki/Siemens(unit)

And finally I would like to use Processing to display my signal. I’m just looking for a simple visual graph which I can then modify to suit my needs.

I appreciate any help!

Regards,

Hubert

#2

I'm able to get a raw GSR output into the Arduiono via the AnalogSerialRead

I really have no idea what this means. Analog data is one thing. Serial data is something else. I have no clue what AnalogSerial data is.

How would I express that in Arduino code?

Using the division operator (/).

My next question is about the unit conversion, standard unit for skin conductance is micro Siemens, how would I be able to code the arduiono to display the reading in this unit?

That would depend on what unit system your AnalogSerial data, whatever the heck that is, is in.

#3

Paul,

Thanks for your reply.

My mistake I meant "AnalogReadSerial" code from the Arduino examples.

PaulS: Using the division operator (/).

Could you elaborate on that? where would I implement the division operator?

#4

My mistake I meant "AnalogReadSerial" code from the Arduino examples.

So, you used an example to create your code, but you still haven't shared YOUR code.

where would I implement the division operator?

int someData = 14;

int oneOver = 1/someData;

Not exactly rocket science...

#5