NTP alarm clock

[bifferos] just found us, but he sent in his NTP alarm clock. It’s actually a Sweex LB200021 router with a custom display driver to display 24 hour time. Given my love of NTP, I couldn’t resist posting this one.


  1. atrain says:

    I like the clock not having the extra part on the 6 or 9.

    BTW: Clocks based off the LM8560 chip (many are) can be made into 24h clocks by connecting 2 pins together.

  2. Computer_Kid says:

    It’s Pin 24 on the LM8560 chip, If anyone was dieing to know. :-)


  3. Freiheit says:

    Regarding his needing another option for NTP servers:

    http://www.pool.ntp.org/ kicks ass. If you have proper server space please donate!

  4. GOD says:


    According to the data sheet you linked to it’s pin 28.

  5. atrain says:

    More fun clock stuff: (show seconds, change alarm run time, etc)

    Though, having a router in a clock is still really cool. They have so much free space, considering how little area is needed to have the clock circuit. I know where I’m putting my fon :D

  6. Panq says:

    Thanks various posters. I got out my old soldering iron and 24hour’d my alarm clock today. Why does anyone even use 12-hour time nowadays?

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