On 7 March 2011 09:14, edmund ronald <edmundronald@xxxxxxxxx> wrote: > Of course I didn't :) Heh :) > However the technology and calibration issues are the same as with any > colorimeter; I wouldn't expect any surprises, other than the perennial > matrix issues. In fact, I would expect my design to perform better > than Huey, which at the time I did this was the low-cost instrument to beat. Right, and I guess the Huey is still the low cost instrument to beat. It's certainly what I advise people who ask to buy. > My guess is that the technology I used was intended for, and will be > or is found in some self-calibrating screens, where of course the > calibration issues can be solved at manufacture time, and later by > remeasuring with a spectro. I guess if someone was to manufacture the devices in small quantity they should just calibrate them at manufacture time with something like a ColorMunki. I assumed you wanted to post the PCB and BOM online and let people make their own colorimeter, open source style. > I should stress that I did the hardware design myself, and had some > protos fabricated, and wrote the Mac instrument drivers, I did not > write full calibration software. Right. It sounds like you could commercialize this and make a bit of pocket money, on the assumption you can undercut the huey by a significant enough margin for production volumes < 1000 or so. That's the tricky bit. Richard.