Like smart TVs, smart projectors also features built-in Wifi connectivity and support media streaming from services like Netflix, YouTube, Hulu, Amazon, and so on. A recent video from NovaSpirit (posted below) illustrates how to convert a cheap $70 standard projector into a smart projector by adding a Raspberry Pi Zero.
Smart projector using Raspberry Pi zero
An USB hub is hardwired to the Pi Zero so that you can use an Wifi dongle (for internet connectivity) and an USB keyboard. The Pi Zero board derives power from the projector circuit board.
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