Have you ever tried to set one of those digital mains timers? The designers always seem to leave a couple of buttons off, so the buttons all do three things, and you can never be sure which mode you&#x27;re in - and I know people who have no problem writing code who have given up on them and bought a mechanical timer instead.<p>Now, you could have a single home control display - or perhaps a single display in every room. And they&#x27;d all show the same information, maybe customised for each room, and include a few extra pages for setting up timers, lights, proximity sensors, or whatever.<p>There are plenty of applications for this kind of IoT, but the tech just hasn&#x27;t come together yet. I think the lack of good, cheap, large, low-energy displays is more of an issue than wake up times - because if the display uses very little energy, you can skip the wake up time.<p>You can more or less pick any two from the list, but getting all four seems to be impossible for now.