ARDUINO
PROJECT – FADING LIGHT SHOW
LESSONS
You should have looked at all lessons up to and including Lesson 8 before
starting this project.
DESCRIPTION
In this project, you will make use of analogWrite(), if statements
and randomness to create a light show consisting of 4 LEDs. The LEDs will fade up and down going from 0
to 255 to 0 continuously. However, the
LEDs will also be given random values to start at and a random direction (going
up or going down). So each time you
watch your light show, it will be different.
PSEUDOCODE
Here is the pseudocode:
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1-Create global variables representing the pin number used for each
LED. Remember that you need to use
pins that can do Pulse Width Modulation. 2-Create global variables representing the voltageNumber
for each LED. 3-Create global variables that keep track if an LED is fading in or
out. This can be an integer that is
either -1 or 1 or some other way. SETUP() 1-Set all of the required pins as OUTPUT pins. 2-Give each of the voltageNumber variables a
random number between 0 and 255. 3-Give each of the direction variables a random value that states
whether you are fading in or out. LOOP() 1-Repeat the following for each LED A-Update voltageNumber (increase or decrease
it by 1). B-Use analogWrite to update the LED’s
brightness. C-If voltageNumber has reached 0 or 255, the
direction variable needs to change so that we switch directions next time. 2-At the very end, add a short delay so that we can see the fading
happen. Use whatever you think works best. |
PROJECT
EXPECTATIONS
Create the fading light show circuit described above. Show it to Mr. Campeau.