[Johannes] just sent us a tip about his small plotter that plots out the current time.
[Johannes] small clock plotter uses a dry wipe pen to write out the time on a small piece of dry erase board. The design is Made of three small 9g servos, with one to lift the pen off the writing surface and the other two to control a pair of connected jointed arms for the x and y-axis.
The little robot painstakingly wipes away the previous time before scrawling the current time in its place (with minute accuracy).
[Johannes] had hackability in mind … Read the rest