Here's a quick tutorial for turning an old Nook into a passive display. This is an update to my 2013 post End Result An eInk screen which displays the trains I can catch from my local station. It shows the next few available trains, and whether they're delayed. It also shows how long until the next local bus to the train station. Updating the Nook Before doing anything, manually update the Nook's firmware. You can download the latest version from Barnes and Nobel Copy the .zip file to…