Week 8: Input Devices

Capacitive Sensing

1. Introduction

This week we had to make some sort of device that read inputs by the user. I decided to do a twist on capacitive sensing based on Rob's design, by having two copper plates and pressing them together for increased capacitance. I originally tried to make a force sensitive resistor out of foam by following an online tutorial but sadly it didn't work.

2. Force Sensitive Resistor (Fail)

Figure 1. Used regular foam instead of conductive foam (fail 1).

Figure 2. Used conductive foam but it apparently didn't work (fail 2).

3. Testing

Figure 3. Testing capacitive sensing.

4. Final Product

Figure 4. Capacitive sensing works!