Clock with LED Ceramic Filaments

[Mac Doktor]

https://chinese-electronics-products-tested.blogspot.com/p/ceramic-filament-clock-kit-tested.html

https://www.aliexpress.us/item/3256808597255015.html

This place ships to the US:

https://www.icstation.com/digital-clock-with-light-adjustment-soldering-projects-alarm-clock-electronic-kits-creative-present-p-16544.html

Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com

“...the book said something astonishing, a very big thought. The stars, it said, were suns but very far away. The Sun was a star but close up.”—Carl Sagan, "The Backbone Of Night", Cosmos, 1980

[Nick Andrews]

Interesting!  Now, how about making one that mimics the venerable large Burroughs tubes?  You could make a huge alphanumeric display...

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[gregebert]

Well, I took the plunge and bought one. There's no way I could design & build one for that price on my own. Like the edge-lit LED clock I bought a few years ago, I expect this one will work for awhile, then get wonky.

My edge-lit clock has the tens-hours displaying multiple numerals (a logical OR of all other digits; very odd) at the same time, and at first I thought something was shorting-out signals on the board but no amount of scrubbing or tapping has fixed it. I'm having a hard time believing the code got corrupted just enough to do this, but not enough to completely trash the overall functionality.

After I get this running, I'll post a video.

Like I really need yet another clock ?????     I guess it's a form of substance addiction. At least it's not my health/safety that's at risk, or any else's. Just my electric bill. I think my clocks have gobbled close to 300kWhr in the past 2 years, according to the multifunction panel meter I installed.

[Adrian Godwin]

Likely a digit driver transistor failed short-circuit.

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[gregebert]

This clock uses addressable RGB LEDs that are on a serial link so its not a simple driver short. The software is probably rather complicated, so I think something in one of the config options got corrupted, and the software is confused. Unfortunately, there is no documented device-reset option. I will try removing the backup battery and shorting-out the power to see if that will force a reset.

[Tony Adams]

Not sure if this will attach as I haven't posted a photo before, an experiment from about 10 years back.

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[gregebert]

OK, got my kit and mounted some parts. The PCB is impressively milled-out. All components are thru-hole, and you will need a soldering iron with a fine tip, along with fine solder. I hate sockets, so I'm soldering the ICs down.

The random number being displayed is for illustrative purposes only.

[gregebert]

Finished building it last night, and attempted to set it up. The controls are a bit wonky, and the contrast makes it hard to read the display without a color filter. Or, I might need to 3D print an overlay that will probably block the unique see-thru design. I wont be installing "ceramic filaments" for the colons, and will instead use discrete LEDs. One annoying feature is that changing the time is done while the numbers are flashing, and they will change during the time they are off, so you have to keep track of button-pressing. I did NOT install the speaker because I have no way of knowing when or if the alarm is set.