Binary Messages with Light

Try this

Create a simple message after learning how to convert it to binary code. Use a piece of clear tape or an overhead projector laminate to make a translucent strip, then create bars with masking or electrical tape. Slowly pull the barcode across the light sensor while in Light Meter mode. Observe the shape of the light intensity graph.

Challenge yourself

• Make barcodes with a partner. Use the graphs to de-code each others’ messages.