2. Objective of the lesson
Use Blockly to create blinking lights
All of you will:
Control individual LEDs on the Codebug
Most of you will:
Animate individual LEDs on the Codebug
Some of you will:
Use buttons to control the LEDs on the Codebug

3. Go to
Click on CREATE and then on the Blockly Tab
You will see a simulation of the Codebug. The Triangular Play button can be used
to run your program and view what will happen once you download to your Codebug

4. We can turn on individual LEDs
The LEDs are called pixels
We can turn on individual pixels or LEDs at coordinates x and y
To turn ON an LED we set it to 1

5. The problem is that all of the lights come on at once
We need to add pauses inbetween lights coming on
Pauses are in milliseconds (ms). 1000ms = 1 second

6. Add a forever loop so that the lights Make it so that the same message plays if the B button is pressed
Make it so that a different message plays when the B button is pressed

7. Challenge
Loop the program so that the animation continues forever (using a while True loop)
Add an ‘if do on button A pressed’ loop so that the animation only shows when the button is pressed
Change the x, y coordinates to change the direction or pattern of the animation
Turn pixels ON and OFF one at a time by setting the pixel to 0