6.2.1. Capacitive Sensing

Try these first

1. 1.

   What is capacitive sensing?

   Hint

   Think about how two plates can interact.

2. 2.

   Name one application of capacitive sensing.

   Hint

   Consider devices you use daily.

3. 3.

   What does capacitive sensing measure?

   • Changes in temperature
   • Changes in capacitance
   • Changes in pressure

   Hint

   Think about the interaction between conductive plates.

4. 4.

   True or False: Touch sensors primarily rely on capacitive sensing.

   • True
   • False

   Hint

   Consider how touchscreens work.

5. 5.

   Consider a scenario where a capacitive touch sensor is used incorrectly. What issues might arise if the sensor is too sensitive?

   Hint

   Reflect on scenarios where false readings could disrupt device functionality.

6. 6.

   Design a basic experiment to demonstrate the effects of parasitic capacitance on sensor readings. What would you measure, and how?

   Hint

   Think about adding materials and noting the impact on the sensor's performance.