LTTA Bulgaria- Tasks

1. Materials found on the Internet are used in the card
Virtual LTTA – Bulgaria 25-29 January 2021
Create interactive drawings with Makey Makey and Scratch
Do you love drawing? We do. But wouldn’t it be cool to use your pencil drawing as a remote
control? Here we’re going to show you how to move a Scratch sprite with a drawing you’ve
made. You may ask how it’s even possible.The magic lies in the fact that pencil lead is
graphite, a form of carbon, which due to the vast electron delocalisation within the carbon
layers can conduct electricity.
Materials:
1. Makey Makey (including Mini-B USB cable)
2. Paper
3. Graphite pencil (a school pencil will do, but a graphite pencil is more reliable)
4. Alligator clips
5. Scratch account
6. Computer
7. Sound files
Step 1: Prepare Drawing
Draw a picture on a piece of paper with a graphite pencil. Make sure the lines are thick and
unbroken. In our case we drew a monkey head with big ears that we coloured in.
Step 2: Programming
Open this link on your browser https://scratch.mit.edu/ to access the Scratch software. At the
Scratch site, click on ‘try it out’ and start to explore it. In this case we want to substitute a cat
sprite for a monkey. To do so we choose a monkey sprite from an existing Scratch library.
Once we have a new sprite on the stage, we right click the original cat sprite and delete it. Now
we want to control our monkey’s movement. We want to be able to control it with “space” and
“left arrow” keys.
We want the sprite move 40 steps when space key is pressed and turn clockwise 15 degrees
when left arrow is pressed. We choose “movement” and drag ‘move 40 steps’ and ‘turn 15
degrees’ to the right area.
In the block library/down click on the button “add blocks” . Select
Step 3: Connecting the Makey Makey
Now it’s time to connect MaKey MaKey into your computer using USB
cable. Plug the small side of USB cable into Makey Makey and the big side
into your computer. (If your computer asks you to install the drivers, simply
click cancel or close the window.)
Connect to Earth - Now you can connect one end of an alligator clip to the
bottom of Makey Makey which is marked as “Earth”.
Connect to Yourself - Then you hold the other end of the alligator clip (the
metal part) between your fingers, and now you become “grounded”.

2. Materials found on the Internet are used in the card
Virtual LTTA – Bulgaria 25-29 January 2021
Connect Makey Makey to your drawing - If you want your drawings to become your keyboard
keys, you connect them to your Makey Makey with the help of alligator clips. On the front side
of Makey Makey you find “space” and “left arrow”. Connect them with two alligator clips to
two parts of your graphite drawing. In our case, we connected Makey Makey “space” and “left
arrow” to the monkey’s ears.