I'm playing around with the Musical Graphiti activity for the Sensor Garden Atelier coming up... Margaret and Keith developed this, and I wanted to make some nice programs to use the morning we do the activity in the workshop. Here's the setup. Margaret got some different drawing tools for us to try, and it seems like the Cretacolor Monolith 9B (extra soft) works really well. A regular pencil is ok, but it's more fun with this graphite stick.

I am using the data recorder to collect the light levels at the front window from 8 at night until morning. Here's the program that collects the data overy couple of minutes overnight. My plan is to create a diorama with the LEDs in which the lights darken and brighten, echoing the changing light overnight, but over just a minute or two instead of hours.

This is the Calm Chime. When the wind is not blowing, the motor turns on and stirs the tall glass of cool ice water. THe sound sensor is mounted near the wind chime. The mechanism stirs the ice water in the glass, creating a classic summer sound. Here's the program that makes it work.