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A comment on Dry erase board lined with IR sensors to record pen strokes [video]. Parent comment

Re:Dry erase board lined with IR sensors to record pen strok... by arey_abhishek on Friday September 11, 2015 @03:27PM (#10205682)
I used an off the shelf IR touch frame bought from Aliexpress: http://www.aliexpress.com/wholesale?catId=0&initiative_id=AS... All touch inputs fed into Raspbery PI with a wifi dongle.
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