**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 {{:fabricademy2017:students:cristina.olivotto:img_20180112_160733.jpg?nolink&400x300 |img_20180112_160733.jpg}}{{:fabricademy2017:students:cristina.olivotto:img_20180112_160945.jpg?nolink&400x300|img_20180112_160945.jpg}} **CREDITS** [[http://www.instructables.com/id/Stickytape-Sensors/|Kobakant]]

STEP 2

The preparation of the sensor is very simple, it took me about 10 minutes to build it. {{ :fabricademy2017:students:cristina.olivotto:img_20180112_160950.jpg?nolink&400x300 |img_20180112_160950.jpg}}{{ :fabricademy2017:students:cristina.olivotto:img_20180112_161145.jpg?nolink&400x108 |img_20180112_161145.jpg}} \\ **TEST** I tested the sensor by using a multimeter and measuring the resistance. {{:fabricademy2017:students:cristina.olivotto:img_20180112_161443.jpg?nolink&400x533 |img_20180112_161443.jpg}}{{ :fabricademy2017:students:cristina.olivotto:img_20180112_161500.jpg?nolink&400x533 |img_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. {{:fabricademy2017:students:cristina.olivotto:sensor.jpg?nolink&700x466}}

STEP 5

The sensor worked quite well, only with 1-2 seconds of delay. {{ :fabricademy2017:students:cristina.olivotto:img_20180114_163750.jpg?nolink&400x533 |img_20180114_163750.jpg}} {{ youtube>5fTT6BBItFI?medium }} **NOTES** It would be interesting to build a sensor for each finger and assign more threshold values associated to different behaviours.