Analog projection clock

This clock is very simple and contain no lenses.

Take quartz clock:

Disassembly it:

To start it move backwards we need to flip iron core of coil (not polarity, iron core is asymmetric):

Next step - making of reflective face. I am use a piece of mirror, but you can use disk from HDD, but it may require extra length of clock hands.

Drilling mirror:

Easy way to paint marks with permanent marker. I prefer to scratch reflecting surface to make my marks more permanent

As light source i am used SMD white LED, it worked better than LED in 5mm diameter package.

All adjustments come to change position of LED

We finished! Here is our projection:

see also (sorry, in russian, but photos quite informative)

digital projection clock, digital projection clock 2

warm greeting from yekaterinburg, russia.