I'm planning to build a straightforward, no-frills e-paper desk clock that won't require any internet connection. So far, I've thought of features like the time display, timer, alarms, calendar, temperature, and humidity readings. I want it to run on AAA batteries and last at least a year without needing to be recharged. It should also be easy to set up without having to read any manuals. I'm particularly keen on ensuring that the timer is a highlight since I want to use the clock as a productivity tool. I'd love to hear any other features you think would be great to include that don't rely on Bluetooth or Wi-Fi! What does your ideal e-paper clock look like?
2 Answers
Just a heads up—if you're going for a 'no-nonsense' approach, think about whether you really want all these features. Also, using AAA batteries may not last a year unless the display only updates once every hour. E-ink is fantastic for saving power when the image is static, but it can be power-hungry when it's refreshing the screen often.
How about adding both analog and digital display options? You could allow it to show time zones and even have a mirrored view for when you need to check the time in the bathroom or something. Inverted colors could be fun as well! Since you're including a calendar, a feature that automatically switches to daylight savings time for applicable zones would be super helpful. Plus, don’t forget about fun fonts—maybe even some quirky modes like binary time!
Great ideas! I love the mirrored feature and the ease of switching for daylight savings. I'll consider different fonts depending on the memory available; I plan to use a black-and-white e-ink display. Thanks! ?

I get what you're saying! When I mention 'no nonsense,' I mean it shouldn't require constant charging or connections. I'm confident in using advanced low-power components. The plan is to have it update every minute, and it should easily last a year. I'm looking at a 3-inch screen for a clip-on style too.