One of the reasons I got a SurePet SureFlap, was to be able to tell whether or not the cat is in the house. Another reason is to lock the flap remotely, but more on that later. I’ve also always wanted to play with an ePaper display. ePaper (or eInk) displays are awesome because they can be programmed to display stuff, and it doesn’t use any power to keep the data on the screen.

Another requirement was that the ePaper controller needed to be low power. What else than a Raspberry Pi? So, I put together a Raspberry Pi … Read more