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Valve open source the Steam Machine e-ink screen so you can make your own
(www.gamingonlinux.com)
This is a most excellent place for technology news and articles.
This is a bunch of stuff that you can order from Adafruit, so idk where Steam comes into it.
Also the screen is 5.83" which is a yawner. It's a drag that e-ink screens are still all so small. Wake me up when there's an affordable 14 inch one or larger, that doesn't take 20+ seconds to refresh. 1 second is tolerable. Motion video is not required.