Since we tested graphite and it is conductive, and we learned that paper is an insulator, we know now that if we make our drawings thick enough on regular paper, we can use drawings to control our computer keys! We also learned an insulator is any item that does not allow electrons to flow through it. We also learned that if an item has any conductivity, Makey Makey will detect it. We learned in the last lesson that a conductor is any item that allows electrons to flow through it with little effort. Are you grounded? You have to be touching ground AND touching the arrow input both at the same time.Are you drawing on a smooth, hard surface (like a clipboard)?.Try pushing the arrow keys directly on your keyboard and watch the piano on the screen.Have you clicked on the piano to bring browser focus to the piano?
Try putting out a damp sponge for people with dry hands. Is the alligator clip touching the pencil drawing nicely?. Usually beginners are recommended to keep their lines separate so that each line makes one distinct sound. Troubleshooting if your drawing isn't working Now that you know about the conductivity of pencil lead, let's find some piano apps you can use with Makey Makey! You can use any app, webpage, or Scratch project that works with key presses. Let's grab your conductivity experiment from the last lesson and make a drawing to test it! Follow along with this video: However, there are many pianos you can use to plug and play with Makey Makey, or you can even design your own instrument app in Scratch!Ĭheck out these amazing instruments from a "Sketch it! Play it!" event at Intel Labs. In this lesson, you will draw your own instrument and plug it up to our piano app to play it. Since pencil lead (also known as graphite) is conductive, that makes pencils and drawings a really cool material for inventing! ( Check out this cool invention Jay Silver made with a pencil before Makey Makey!) Did you test pencil lead for conductivity in the last lesson? The graphite inside a pencil is conductive even though the wood surrounding a pencil is not.
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