This is a large (20” x 30” or so) wall clock I designed and built. A 3d printed (and glued together) array of ~1” cubes was designed so that it lines up perfectly with some cheap RGB strip LEDs. Then an arduino controls the lighting and communicates with a RTC. I designed an acrylic case and had it laser cut from pololu.com. The back and sides are transparent while the front is frosted to disperse the light. There is a microphone and a spectrum analyzer chip that gets ambient sound data to make the lights react to nearby music. This part is still a work in progress – the first spectrum analyzer chip doesn’t give great response.
A look at the firmware is below the gallery.
