There is a board that&#x27;ll pull hdmi to the CSI port. It&#x27;s abou 150 euros, but there have been success reports, up to 60 fps<p><a href="http:&#x2F;&#x2F;www.auvidea.eu&#x2F;index.php&#x2F;theme-styles&#x2F;2014-12-30-22-32-06&#x2F;b100-hdmi-to-csi-2-bridge" rel="nofollow">http:&#x2F;&#x2F;www.auvidea.eu&#x2F;index.php&#x2F;theme-styles&#x2F;2014-12-30-22-3...</a><p>Regarding emulating a USB device, first thing that comes to mind is possibly using a micro of some sort that can act as a usb device, like an arduino or teensy. it&#x27;s a bit hackish, but sending things over SPI should get more than ample speed for keyboard&#x2F;mouse emulation, and there&#x27;s code written already for a lot of micro platforms to do both.