Manako’s Porcupine Stroke-Sensor Switch

My initial idea was to create a curtain of sliced materials that would work as a switch when stroked.

Original Sketch:

1555_001

To understand the best method for achieving this stroke effect, I researched pressure sensors, stroke sensors, and capacitive sensors:

notes_capacitivesensor

First prototype using aluminum foil as capacitive sensor:img_3733

Upon learning that the stroke sensor (illustrated above) could be combined with capacitive sensors, I decided to follow the steps below:

  1. Connect Arduino to conductive fabric
  2. Sew the conductive fabric to the base fabric
  3. Use conductive thread to stitch the two fabrics together
  4. Leave the excess conductive thread on the surface to be stroked
  5. Use the code for capacitive sensor to measure the electric field being affected by the stroke and use the measurements to instruct the arduino to turn on/off the LED.

Final product: a stroke-sensor porcupine whose LED eye turns on/off when it is stroked.