I did not build this but wanted to share, I used for my 3D printer and will soon attach it to my CNC. This camera is internet ready, connects to your phone, and can record with a user-supplied card. Prices vary from $17~26. Check my in-use video HERE
Anybody else develop a nervous tick after watching that green box? 
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If people are interested in this camera then here’s a great way to acquired it.