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Anyone witth RFID tech experience?
Felsir:
--- Quote from: Howard_Casto on July 07, 2013, 08:38:16 pm ---You can tell when a tag is within range of a scanner and the tag can hold some info, but other than that you can't really tell where the tag is, where it's pointing, ect.
--- End quote ---
Yeah, I have been reading that it is possible to vary the range of each RFID antennae- thus being able to "sweep" from 100% to 0% and use that info as distance from tag to antennae- which in turn should be enough to determine the location. I doubt that it will be accurate enough for my purpose. Also so far I only found equipment from $1000 and up per reader so it will be way to expensive even to get a proof of concept going :-(
I'll see if I can tweak the webcam some more. The main problem with the webcam is that it is intended for use close to the monitor. I have a Microsoft Lifecam 5000HD, which does have an autofocus so the image is usable for my tracing purpose. I'll test if the AR cards (like the ones that come with the Nintendo 3DS right?) can be recognised.
SavannahLion, do you have a link to such paint? A google search resulted for me in paint which lights up in blacklights? Is that what you meant?
SavannahLion:
I don't know. I think it's more like "invisible" paints. A while ago I was looking for some unique paints and that sort of thing kept coming up in my searches. Here is one such link: http://www.pfonline.com/articles/non-visible-infrared-ultraviolet-paint
I can never find the damn suppliers referenced though. As near as I can tell the military uses such paints to paint targets which are visible to cameras. In theory you really don't need a big blacklight per se.Maybe a few UV or IR emiting LEDs to excite the dye or paint and a camera without the uv or ir filters (or is it with? I can never get that part straight). There are other applications for that though as discussed in this thread: http://boards.straightdope.com/sdmb/archive/index.php/t-629405.html (ignore the alien crap). Here is a more practical application but expensive camera: http://www.sensorsinc.com/overview.html
I've always been interested in the technique and keep the idea filed away for experimentation but can never find the time to do it. On a side note, doesn't the Kinect leverage an IR camera?
SavannahLion:
I almost forgot. If it helps check wiki for ultraviolet photography and infrared photography.
kahlid74:
Earlier in my career I was a Network Engineer for a business who had manufacturing floors with 10,000 plus RFIDs. They are way more powerful that just shoplifting but we're talking industrial RFID's. RFID's were embedded everywhere so the line knew where a unit was and it's level of build. You could find a unit anywhere in the factory based on where RFID's were. The RFID's also held information relative to what was being built like Model/Serial Number, and what stage of the build it was on/had been completed.
So what you want to do is easily doable via RFID but for accuracy would take a large investment and some good coding.
As others have recommended you might want to even look into a few XBOX kinnect's and 3D model the board as you're playing.
Howard_Casto:
Yeah I've seen similar setups but like he was saying, even an entry level scanner is 1000 bucks. And that's to go with these cruddy supermarket rfid chips. That's an awfully big investment considering what he's trying to do.
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