CPSC310A
Robotics

Activity 4

Analog Input

  1. What is a voltage divider?

  2. For Circuit 2, what is the fastest and slowest the LED can blink in milliseconds?

  3. Use the multimeter to measure the voltage on the orange wire and the blue wire of Circuit 2 when the potentiometer is in different positions.

Potentiometer Position 0 1 / 3 2 / 3 1
Voltage
  1. For Circuit 2, what will happen if you swap the wires at e6 and e8?

  2. For Circuit 2, why is pin 13 set to OUTPUT, but pin 0 is not set to INPUT?

  3. What happens when you connect the potentiometer’s middle pin to the LED’s positive pin and remove the LED’s connection to the Arduino’s pin 13?