| propeller clock fan site | ||
| base board explained | base board ulticap schematic download | base board pcb ultiboard download |
| propeller board explained | propeller board ulticap schematic download | propeller board pcb ultiboard download |
| Links | BoB Blick | |
| Henk soubry, on a mirror | Luberg propellers clock | Otis Clock |
| Footage made: | build on the otis clock (a revised bob blick design) |
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| Propeller clock video click here | Foto's of the propeller clock | this design has no remote control |