GSR sensor for GrovePi+


#1

Hello,
is this sensor compatible with it?
I’m afraid it isn’t but just for a matter of language. Is it? If yes, how can I make it compatible?


#2

Can you link to the sensor you’re asking about?


#3

#4

I don’t think we have an example written for this sensor yet. However, it’s an analog sensor, and we have a few examples in our github repo on how to read an analog sensor.

The wiki can be found here: http://www.seeedstudio.com/wiki/Grove_-_GSR_Sensor

It looks from the wiki like you also need to adjust the feedback gain on some of the sensors.


#5

“It looks from the wiki like you also need to adjust the feedback gain on some of the sensors.” What do you mean?


#6

Thought I saw that there were phillips head adjusting knobs to attenuate the signal on this sensor. Maybe I got that wrong?


#7

Are you referring to “Sensitivity adjustable via a potentiometer”?

“Connect Grove - GSR Sensor to the analog port A2 of Grove-Basic Shield and Grove - Buzzer to digital port 3”

is the buzzer the potentiometer?

When I watch the charts I am confused because I can’t understand how deep breaths seems so stressful as the event of the boss.


#8

What John meant was that there is a potentiometer on the GSR sensor itself that you can move around to adjust the sensitivity of the sensor itself. The grove wiki (http://www.seeedstudio.com/wiki/Grove_-_GSR_Sensor) has the example set for reading the analog sensor for 500 time in 2.5 seconds and then averaging the values. You wont be able to poll that fast but you should be able to poll 25-50 times in 2.5 seconds and then average it. Try doing that and then check if it works any better.

-Karan