TECH: question about optical sensors for trackballs & spinners


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Posted by Tehrasha on 11, 2001 at 2:17 AM:

One of the biggest problems with using trackballs and spinners in cabinet projects is strobing. That pain-in-the-butt phenomenon that occurs when you spin the device hard in one direction, while the sensor either stalls and doenst read the movement, or even worse, reads it backwards.

One attempt to fix this has been to adjust the sensitivity of the emulator and simply not spin the device as much. Another was to remove the star wheel on the devices, and replace them with one that has fewer blades or holes.

My question is, can a similar effect be done at the electronic level? For instance, wiring a JK flip-flop in toggle mode, in line with the optic lines? This would be the electronic equiv. of having a star-wheel with 50% less holes. Wouldnt it?

It CANT be this simple, or it would have been done by now, right? Anyone played with this concept before?


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