TexZK Posted October 18, 2008 Report Share Posted October 18, 2008 Hi all!I've had an idea about getting rid of (almost) all those rotary encoders and their design "troubles" for big jog wheels: using optical mouse encoders.I don't know if they're fast enough to handle such "hi-speed" data, but I think their design solution would be much easier than with encoders. Just place the sensor under the wheel, then sample data via, say, a SPI bus from the main MCU. With even 400 dpi, you would get MUCH more accurate measurements than with a, for example, 256-steps optical rotary encoder.Interfacing such chips trough a high-speed MCU/DSP (PIC18K or dsPIC33, both available also as 28-pin DIP), it would be possible to get VERY high performance wheels.Can anyone try this out? I'm not an experienced hardware designer/programmer, even if I'm not a "totally n00b", so if someone could support this idea the WHOLE community would be happy ;)I've found some interesting chips at Avago Tech laser/optical mouse sensors page such as:http://www.avagotech.com/pages/en/navigation_interface_solutions/navigation_sensors/laserstream/adns-6010/which already includes a SPI port for direct reading. The datasheet also looks very complete and with good design examples.I hope there will be an official MIDIbox module using this technology!!! Quote Link to comment Share on other sites More sharing options...
cimo Posted October 18, 2008 Report Share Posted October 18, 2008 Search for Rasteri s scratch wheel ND Sasha s Ableton controller Quote Link to comment Share on other sites More sharing options...
TexZK Posted October 18, 2008 Author Report Share Posted October 18, 2008 Thanks mate! I've already seen them on YouTube, and their work is "TERRIFICALLY AWESOME" :o :o :o 8) Quote Link to comment Share on other sites More sharing options...
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