josh.earth
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  • Building an LED Matrix Clock From Spare Parts

    I’ve been working remote for 20 years, but only recently started living in the same house with my dad, my sister, and three teenagers. With that many people it’s common for someone to come into my office and start asking me questions while I’m on a video call. This has happened enough that I wanted an “On Air” sign to indicate to anyone coming by my room that I’m not able to talk. A few months ago I decided to finally build one from spare parts around the house. I didn’t really need this of course, but I love playing with novel user interfaces.

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    Circuit Python Watch Status

    It's been a bit since I've posted on my round screen watch project. Most of my time has been taken up by work, travel, and family stuff, but I did have a few seconds to add a feature or two.

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    Fonts and Icons on Circuit Python

    I’m continuing to work on a little smartwatch prototype using a little round LCD and I want to have nice looking text. The default font for CircuitPython is fine, but it’s very tiny. This LCD has a pretty high DPI compared to other hobbyist screens( > 200 ppi), so I need to find a new font. CP has a way of importing new fonts, but there are a few pitfalls and tricks I discovered, so that’s what I’m covering today.

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    Performance Limitations of CircuitPython's DisplayIO Graphics

    For my next project with the WaveShare Round LCD I want to create an animation of Dr Strange's Eye of Agamotto. Here is my first attempt in JS (looks more like the comics than the movies). Not bad, I think.

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    Playing with a Pico based Round LCD screen

    I'm enamored of all th cheap and hackable screens and embedded CPUs coming onto the market. I'm frustrated, however, that despite embedded computing being more accessible than ever, the mass manufacturers products are all becoming more and more the same. Where are the phones with oval screens? Where are the steam punk pocket calculators? We have the technology to make devices that are ever more niche and increasingly creative and different, yet what you can actually buy is more glowing rectangles. I'd like to fix this.

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