5 ms·
Really impressive. Must be pretty sensitive IR sensors to not have false detections when the marker/eraser gets close to the board but doesn't touch it. Any inf
by ohitsdom 11y ago
Really impressive. Must be pretty sensitive IR sensors to not have false detections when the marker/eraser gets close to the board but doesn't touch it. Any info on the hardware and software stack?
- djrogers 11y agoLooks like it did actually have an FP+ on the eraser there if you compare the phone to what he actually erased onscreen. I'll second the request for more info though!
- arey_abhishek 11y agoThe eraser did actually touch the board, but appears like it didn't because of the reflective surface. :)
- arey_abhishek 11y agoThanks. If the pen is about 2mm off the surface, there is a false positive. Also haven't done palm rejection yet, so your palm needs to be off the board to write.
- arey_abhishek 11y agoI used an off the shelf IR touch frame bought from Aliexpress: http://www.aliexpress.com/wholesale?catId=0&initiative_id=AS_20150911112236&SearchText=ir+touch+frame http://www.aliexpress.com/wholesale?catId=0&initiative_id=AS... All touch inputs fed into Raspbery PI with a wifi dongle.