I have made this little gadget for the clock contest.The basic is my previous POV published here.
Step 1: Materials:
3 -5 V DC motor, Arduino pro mini 5V 16Mhz, RTC module with backup battery, IR LED and phototransistor, LED-s, resistors, some copper wire, a piece of coaxial cable, a piece of scrap PCB.
Step 2: Just Do It...
This gadget based on my previous project which is well described. I put pictures here because I think one picture tells more than hundreds of words.