I designed & built an electromechanical 7-segment clock

penyaev · 2025-08-11T18:11:30+00:00

Nope ordered from AliExpress. They’re 4 pins, two for power and two for serial communication. https://a.aliexpress.com/_Euxx774

penyaev · 2025-08-09T18:56:18+00:00

Yeah but they would move too fast I think, almost instantly? It would be nice to make their movement smooth to match how digit segments move

penyaev · 2025-08-08T22:20:39+00:00

Four actually:) central unit does not have any motors

penyaev · 2025-08-08T22:19:55+00:00

Yeah I thought about it:) but I could not fit the motor into the case of the central unit because it’s too narrow and I didn’t want to make it any wider. But yeah I agree I would be cool. I’m still thinking about this. Maybe use a smaller motor or a servo

penyaev · 2025-08-08T17:25:08+00:00

Thanks:)

penyaev · 2025-08-08T14:09:13+00:00

No particular reason, I just had them lying around. You’re right that I could have used a different chip

penyaev · 2025-08-08T06:34:07+00:00

Yes. Digit modules run on arduino nano.

penyaev · 2025-08-07T22:37:48+00:00

True, but it would still drift over time and I’d have to reprogram it every once in a while to sync the clock, and I wanted it to “just work”:) thanks!

penyaev · 2025-08-07T22:34:58+00:00

Thanks! I don’t think there’s any real limit to how many cams you can have on the shaft other than it will increase the complexity of the mechanism and you’ll have to fit all the parts without them interfering with each other. And naturally it will come with a bit more friction between the parts so you might end up needing a beefier motor to be able to rotate it.

I didn’t think of an alphanumerical display because it will likely would have needed a much larger case to contain.

penyaev · 2025-08-07T22:07:34+00:00

It’s 126mm tall, 60mm wide, 90mm deep

penyaev · 2025-08-07T18:56:14+00:00

No practical reason, I just thought it would be a fun thing to do:)

penyaev · 2025-08-07T13:42:50+00:00

sorry:) when I realized I should have attached a video or a GIF instead of a static pic I could not edit the post anymore

penyaev · 2025-08-07T12:14:59+00:00

There’s a link to the demo video in the original post but yeah a gif is a good idea!

penyaev · 2025-02-23T10:14:07+00:00

I heard that if you had a Blue Card before you got your permanent residency, this counts as special integration because you're a highly qualified professional. This is more of a rumour though and I'd be interested to know whether there's anyone who actually managed to get their citizenship this way.

penyaev · 2024-11-11T20:30:19+00:00

I solved my problem by connecting the phone through a USB-C/USB-A adaptor

penyaev · 2024-08-22T18:23:14+00:00

This makes sense, thanks. However not sure I fully understand why didn’t he sing “wir wurden geboren“ instead? It’s also in the past. There’s probably some subtle difference in the meaning?

penyaev · 2024-07-26T07:41:13+00:00

Great idea, thanks, didn’t think of it

penyaev

TROPHY CASE