Touch

Question 1

Three range touch sensors?

Answer 1

Button, Squeeze sensor, Capacitive Touch Sensor

Question 2

How does a button work?

Answer 2

When it is pressed its leads connect closing the circuit

Question 3

What detects the amount of force being applied to a button? How does it work?

Answer 3

FlexiForce sensor; thin layers of pressure sensitive ink

Question 4

What does capacitive sensor measure?

Answer 4

Capacitance; ability to store electrical charge

Question 5

Three terminals on microswitch?

Answer 5

Common (C), Normally Open (NO), Normally Closed (NC)

Question 6

What is a potentiometer (POT)? How to use in place of a single resistor? What can it be used as if all three leads connected?

Answer 6

A variable resistor; connect the middle lead and either side lead; a voltage divider that lowers voltage by dividing it across two resistors

Question 7

What is the integrated chip (IC) for capacitive sensing?

Answer 7

QT113

Question 8

How does capacitive sensor work?

Answer 8

It measures how long it’ll take to load a piece of wire with electric charge

Question 9

What does FlexiForce sensor measure? What type of resistance sensor is it? How many leads on it?

Answer 9

measures squeeze (pressure) on its round head; simple analogue resistance sensor; two leads third is not connected but there to make connecting easier