Summary

https://youtu.be/COaiLH__62c

idea comes from the net and:
http://www.heise.de/make/inhalt/2015/5/16/ (german make magazine edition, current issue)

parts:
arduino nano
uln2803 driver (you could use 3 transistor instead)
rgb stripe (60 pieces per meter, using 21pieces on 35cm cut)
halleffect sensor (TLE4905L) and a neodym magnet (3x2mm) for sync
motor comes from an old cd-rom drive
rtc module with ds1307

23.12.2016:
just added (base) case plans for lasercut (3mm material)

Print Settings

Rafts:

No

                                            <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0,1mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>30%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>printed now in pla,<br>prototype disc with a lasered wooden panel</p><p>small hint: you could even use a old software or audio disc, dvd or whatever - cause they have exactly the same diameter (120mm)<br>...for this, i added a little printable cd_adapter</p></div>

How I Designed This

files are constructed in Sketchup

(yet another)POV Clock