There's also Alberts' 'Niptrix'...
viewtopic.php?f=1&t=1587&hilit=niptrix...likewise, loads of LEDs to wire up, a true labour of love...
I considered using the device below (see first pdf) for a camera mounted on the outer edge of a disc rotating at 750 rpm. Instead of using slip-rings an on-axis optical LED-photodiode/transistor to transfer the signal. Two small PP3 type rechargeable batteries would provide the power for the stuff rotating and add mass to the disc, balanced of course.
The sensor was to be a TSL201R 64x1 photo detector array...however it never got further than sketches...plus with the very short exposure and integration time probably very insensitive.
It would also require some electronics (memory) to arrange the output in the standard NBTV format.
For SSTV I devised a pseudo-mechanical arrangement using a 33 RPM turntable and a 'nodding' sensor and lens, though using the linear array mentioned the turntable could be omitted. That idea didn't even get as far as sketches!
For SSTV and improved linear array would be needed of at least 128 'cells'. (Second PDF). Once the SSTV-VGA up-convertor is complete I may make this my next project...
Steve A.
Wouldn't you know it? It appears those sensors are no longer available...company buy-outs and so on...time to hunt for something similar...