azonenberg changed the topic of #homecmos to: Homebrew CMOS and MEMS foundry design | Wiki: http://homecmos.drawersteak.com/wiki/Main_Page | Repository: http://code.google.com/p/homecmos/ | Logs: http://en.qi-hardware.com/homecmos-logs/
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<Noxz> looking into Digital RedOuts (DRO, for, say, a mill) and most of them seem to use linear/rotary encoders.. and though about laser distance sensing instead.. kinda looking into it some.. a few systems use a retroreflective target
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<Noxz> also meant to paste that into a different channel, about retroreflective stuff ;)
<Noxz> linear distance is a bit easier than full tracking
<Noxz> mostly time of flight
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<nmz787> I am still perplexed as to why MEMS interferometers aren't a cheap commodity yet... seems like they'd be pretty easy to build into some really easy to use distance meter modules
* nmz787 was just searching for them over the weekend, on ebay at least
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<SpeedEvil> nmz787: whatdo you mean.
<SpeedEvil> They are, they're $1 each.
<SpeedEvil> If you mean for distance measurement, you pretty much can't do that, as you need to double-integrate the signal, to get range, which murders your noise.
<SpeedEvil> As in - it drifts by a large slice of a kilometer in ten minutes.