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How to build a circular LCD clock

blinry.org

21–30 of 73 posts

Re: How to build a circular LCD clock

#21

Beat project, but > I also tried with a Raspberry Pi Zero 2, but 512 MB of RAM were too little to run a modern browser, You don't need a browser to display graphics. And you don't need to be a programming whiz either. I'm sure Claude could write some python to render these clock faces.

I came here to say the same thing. Why on earth do we need a "modern browser" to show a clock?

Re: How to build a circular LCD clock

#23
post #17

> The Pi 3B+ seems just enough to render some simple animations. > I think a Pi 4 might be a good sweet spot between processing power and price, I know this isn't exactly a serious product and more of a gadget/gimmick but man we are off by a factor of like 3-4 here :D

If they didn’t use an entire browser to render the clock face this seems like it could be an Arduino/ESP32-esque project.

Driving HDMI is way harder then you would guess; extremely fast timing to hit. A naive framebuffer alone won't fit in RAM, whilst not strictly needed it would make it a hard challenge.

Re: How to build a circular LCD clock

#24
post #12

Earlier quoted context omitted.

There's a Kickstarter project to make a round phone.[1] That had potential as a female fashion accessory. But the site hasn't updated since 2025.[2] [1] https://www.kickstarter.com/projects/dtoor/the-cyrcle-phone-... [2] https://www.cyrclephone.com

What makes a fashion accessory ‘female?’

Who it's marketed at.

Re: How to build a circular LCD clock

#26

Beat project, but > I also tried with a Raspberry Pi Zero 2, but 512 MB of RAM were too little to run a modern browser, You don't need a browser to display graphics. And you don't need to be a programming whiz either. I'm sure Claude could write some python to render these clock faces.

[deleted]

Re: How to build a circular LCD clock

#27

Beat project, but > I also tried with a Raspberry Pi Zero 2, but 512 MB of RAM were too little to run a modern browser, You don't need a browser to display graphics. And you don't need to be a programming whiz either. I'm sure Claude could write some python to render these clock faces.

512mb or RAM to show the time, what a time we live in.

Re: How to build a circular LCD clock

#28

> I also tried with a Raspberry Pi Zero 2, but 512 MB of RAM were too little to run a modern browser, sadly. I found that the surf browser was efficient enough to run fine on my Raspberry Pi Zero W. YMMV with animations and such, but it's much better than any chromium alternative in my experience.

Interesting, surf is based off WebKit2.

https://surf.suckless.org/

Re: How to build a circular LCD clock

#30
Author here! :) This article is me sharing something that made me really happy, wanting to show others how they can do the same.

I see some comments pointing out that the clock wouldn't need to run in the browser. I picked this option to make it simple for folks around me to quickly prototype their own clock faces. This isn't supposed to be the cheapest or most efficient implementation, either; feel free to build your own LCD clock and then blog about how you did it!

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