Process

Finding Reference

To get some ideas, I visited www.kobakant.at/DIY and found several different bend sensors. Basically, the sensors* use Velostat, a semi-conductive material which become less electroresistive when it is applied mechanical strains like bending. For the sensors, it connects two conductive components to close a circuit as a switch does. I decided to use this method.

*Neoprene bend sensor, sheath bend sensor

Prototype 1

Two pieces of conductive thread are housed under the patch of Velostat seperately as the below image.  When it is bended, the electric resistance decrease so the two thread pieces are connected. 

** 3V coin-like battery was broken. Fortunately, I have an Arduino and breadboard...