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Building Clock with CMOS

I’ve been trying to build a digital clock to show the 'generation’ of time, without the use of any devices that obscure how it functions.

While looking for a way to build a clock with a quartz crystal, I came across an Instructable that had a diagram of a clock built with CMOS chips.

Source: https://www.instructables.com/id/24-Hr-Digital-Clock-only-with-basic-CMOS-Chips/

Source: https://www.instructables.com/id/24-Hr-Digital-Clock-only-with-basic-CMOS-Chips/

However, the problem with this circuit was that the quartz crystal was a tiny chip that wouldn’t show it. So I decided to change the signal input into a diagram that I would understand. So found this schematic that was more straightforward in the way you could read how the signal is getting divided. I prototyped this first.

source: http://www.hackersbench.com/Projects/1Hz/

source: http://www.hackersbench.com/Projects/1Hz/

After I got that working, I started to build out a prototype. This process took the most time and a lot of tears :’-(

Simple explanation of clock

After making sure things worked and figuring out what each component does, I started to draw the form of the freeform circuit clock that I wanted to make.

drawn diagram
Diagram
Straightening spools of copper wire

Straightening spools of copper wire

Process shot of starting to build

Process shot of starting to build

Building process 1
Closeup

Finished clock!

Made a 💯 analog circuitry clock from a quartz crystal! There's ZERO software in here 😈 and the hardware is transparent. Don't be fooled by the usb cord, it only supplies the 5V power (via a phone charging block)! You can see the entire process and explanation by swiping through the photos.

145 Likes, 14 Comments - Lynne Yun (@lynneyun) on Instagram: "Made a 💯 analog circuitry clock from a quartz crystal! There's ZERO software in here 😈 and the..."

Wednesday 10.23.19
Posted by Lynne Yun
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