Analogue Input

1 Analogue Inputs

Now insert the POT just below where the switch was. Check where the legs go for the switch.

You will now set up a program to monitor the Analogue input.
To do this, we are going to use the serial monitor.
The Arduino IDE has a feature that can be a great help in debugging sketches or controlling Arduino from your computer's keyboard. The Serial Monitor is a separate pop-up window that acts as a separate terminal that communicates by receiving and sending Serial Data.
First, open a new Arduino sketch. Call it AnalogInputOnly.
Then write the following code to it and download the program to your Arduino.
Once downloaded, you can click on the serial monitor button in the top right had corner and monitor the POT by turning it clockwise and anti-clockwise.

You will now be able to see the value change as you adjust your POT between 0-1023.
The Genie microcontroller can set a value between 0-255.

Lets now write a program to control the LED when the POT is turned to a certain position.
If your LED was removed, replace it as it was previously in the breadboard.

Take a screenshot of your code and upload it to the badge task. Make sure you include the bottom, where it states 'Done uploading'.

Adapt your code so that...
- The LED is off if the sensor value is under 300, on constantly if it's between 301-700 and flashing if it's over 700. Tip: 'else if' will help.
- Add two more LEDs to other output pins. Adapt the code so that as the potentiometer is turned, either none, 1, 2 or 3 LEDs are lit.
- Make the brightness of an LED change as the potentiometer is turned. Tip: You need to use a technique called PWM to achieve this.