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DIY YouTuber builds cheap VR headset and makes it open-source
(www.notebookcheck.net)
This is a most excellent place for technology news and articles.
I second utopiah's point, if assembling one with your own hands sounds like fun to you, go for it. But a second hand Reverb G2 from ebay will almost certainly be both cheaper, and better for using it in almost every way, it would even have significantly higher resolution.