get an IR pass filter, they often look like a mirror, and use a nikon D70, you typically don't need to take the cut filter off.
do a quick search on digital IR photography. Happy Hacking On Aug 23, 2008, at 10:52 AM, Dave N6NZ wrote: > Mark Rages wrote: >> On Sat, Aug 23, 2008 at 12:04 PM, Eric Brombaugh >> <[EMAIL PROTECTED]> wrote: >>> Mark Rages wrote: >>>> I've had moderate success clearing blind shorts with the 5V bus >>>> of a >>>> high-power computer power supply. (This can be hazardous to other >>>> parts on an assembled board) > > Yes, but the risk of unanticipated pyrotechnics always makes lab work > more exciting :) > >>>> Otherwise, use a current-limited power >>>> supply to put a few amps into the stuck node. Use a millivolt >>>> meter >>>> to measure different places on it. Lower voltage means closer to >>>> the >>>> short. >>> An IR camera to look for the hotspot would probably be a handy way >>> to do >>> this too. Who's got an IR camera though? >>> >> >> IR cameras are great for this. I got a chance to see one in use >> last >> year at a contract manufacturer. The misplaced part was >> dissipating a >> few milliwatts at most, but it showed bright red on the camera. > > So, how much mileage could we get out of a cheap digital camera and > replaced the IR blocking filter with a visible light reducing filter? > There might be a cheap hackable camera that is suitable, since a lot > of > the low-end imagers are quite sensitive in IR. Old camcorders might > be > another bet. > > -dave > >> >> Regards, >> Mark >> [EMAIL PROTECTED] > > > > _______________________________________________ > geda-user mailing list > [email protected] > http://www.seul.org/cgi-bin/mailman/listinfo/geda-user _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
