My cable company recently decided to remotely brick my DVR. This is annoying for a number of reasons, but in particular... I was rather used to it doubling as a clock.
Now, I really don't want much from a clock, just:
- It should be self-illuminated light-on-dark (i.e. LED/VFD/OLED, not LCD).
- It should use or support 24-hour time.
- I shouldn't have to set it. Ever. (Not even if the DST rules change.)
Is this so much to ask?
Well, apparently it is, because while it's trivial to find two-out-of-three in various combinations, almost nothing satisfies all three. (If this is reminding you of
this other, recent thread... yup. Except I'm looking for self-illuminated.) Frills such as seconds, date, temperature and weather are acceptable but not required. I wouldn't
mind an off-the-shelf product, but the only one I can find that checks all the above boxes is
this, and I don't like the seconds being a different size. (I'm not in love with the dot-matrix style digits, either.) I'd also prefer to avoid something that needs to be hooked up to WiFi, and I
will not use anything that requires installing an app.
Now... mitigating my woes, I do happen to have a Linux "server" near where I want the clock, which satisfies the third point via the magics of NTP and software updates. In fact, if I could just hook an always-on display to that, it would solve my problem nicely.
Is there a modest-sized (at least 3"×1" but not larger than 18"×5") OLED screen that I can control from a PC USB port from userland software, but
not as an X/Wayland display? Or is there any four-digit seven-segment (with colon, please!) time display (preferably with 1" to 3" high digits and preferably white, blue, or at least not-red) that can be controlled from a PC USB port? Basically, I want something that lets me run software on the PC to update the display when the minute changes. (Something that can also be
powered off the same port would be ideal, but isn't strictly necessary.)
I'm not adverse to adding a MCU to the mix and/or scavenging a display from some off-the-shelf clock. (I suppose that, with enough effort, I could coax an old smartphone into serving, but I'd prefer something a little more straight forward.)