stretch sensor visualisation

I’ve upgraded the first circuit with the potentiometers and the results look
promising. I used the Processing sketch that comes with the Arduino to make
a graphic of my breathing activity. I’ve tagged the different regions in the
graph so it’s easy to follow the movement of the breath. Btw the circuit is
constructed in such a way that the resistance decreases when the sensor is
stretched (breathing in.)
For this experiment I put the belt with the sensor rather tight around my
waist and I wasn’t talking. Talking makes the ‘not breathing’ part more
ragged but you can still clearly see when I’m breathing in and out.


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