Movement

Question 1

How does Tilt Ball Switch work? What do they detect?

Answer 1

Metal tube has a little metal ball in it, when tilted upright the ball rolls into contacts sticking out at the end and shorts them together; basic motion/orientation

Question 2

What does vibration sensor detect?

Answer 2

Tiny vibrations

Question 3

Describe signal sent by vibration sensor in Arduino?

Answer 3

the vibration sensor is very short and thus interrupt must be used to catch it

Question 4

What measures turning?

Answer 4

A rotatory encoder

Question 5

Typically, a joystick contains two sensors based on? Describe dynamic

Answer 5

Potentiometers; one that tilts along y-axis and one that tilts along x-axis

Question 6

What type of PIR has two modes? Describe the modes?

Answer 6

Parallax PIR; H to stay high as long as there’s movement, L return to low after an alarm

Question 7

What’s a Jumper in Parallax PIR?

Answer 7

Tiny rectangular part covered in black plastic that has a wire to choose mode of operation