PLACE: Onl'Fait, Geneva
DATE: 11/01/2018
PEOPLE: Cristina, Stefano

STEP 1

I built a simple pressure sensor to be attached to a wrist. The input is the wrist movement, the output the behavior of a LED.

MATERIAL

  • Velostat
  • conductive fabric
  • conductive thread
  • sello tape
  • Lilypad
  • LED
  • resistance

img_20180112_160733.jpgimg_20180112_160945.jpg

CREDITS

Kobakant

STEP 2

The preparation of the sensor is very simple, it took me about 10 minutes to build it.

img_20180112_160950.jpgimg_20180112_161145.jpg


TEST

I tested the sensor by using a multimeter and measuring the resistance.

img_20180112_161443.jpgimg_20180112_161500.jpg

STEP 3

I built the same circuit that I designed for the exercise E-textiles and wearables I (week 5): the components are a Lilypad, a resistance, a LED.

STEP 4

I used the same code that I wrote for the exercise E-textiles and wearables I (week 5). The objective is to accelerate the blinking rate of the LED depending on the wrist position. I just had to recalibrate the threshold value based on the sensor value.

sensor.jpg

STEP 5

The sensor worked quite well, only with 1-2 seconds of delay.

img_20180114_163750.jpg

NOTES

It would be interesting to build a sensor for each finger and assign more threshold values associated to different behaviours.