A Raspberry Pi doesn't have built in memory, so you're going to have to fix that if you're making a smart mirror. The software you're loading onto it has to live somewhere.

As you’d expect, the mirror uses Windows 10 running on a Raspberry 2 or 3. Like the various other DIY options out there, it simply includes a two-way mirror with a monitor strapped to the back.

It takes a two way mirror, stuffs a monitor behind it, and then powers the whole thing with a Raspberry Pi running in Chromium’s kiosk mode.

Using a Raspberry Pi mini PC as the core Srivishnu has been able to create his smart mirror for less than $80. This includes creating your very own wooden framework.