Arduino controlled Laser Time Writer
This new kit is a variant of Elektor’s earlier published sand clock. Instead of writing the time in a layer of sand, it uses a laser module to plot the time onto a piece of glow-in-the-dark sticker material. The original design of the sand clock was modified to fit a laser module running on 3 - 5 V. A switch allows starting the time writing sequence at will rather than at a preset interval. This upgrade-kit will soon be available in your Elektor store.