Build your own touchpico/leapmotion sensor with BOM of 20$

This is my garage project and I hope it can help people understand technology behind interactive projecter/device.   The technology should be similar. The difference between my solutions with most solution available on web is that I am using a low cost FPGA to connection to the CMOS camera to enable 60Frame/sec sample at 640x480 DPI. It was designed 5 years ago and today you can use much higher resolution CMOS to replace 640x480.  Another suggestion to improve the design is using multiple CMOS sensors.

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