Felix Mattick

  • @kognise
  • Overpromising & overmaking
  • Brooklyn, New York
I'm a young person who makes cool things with technology, flies planes, and plays music. I also maintain several open source projects.

I seem to have an obsession with starting side projects and reverse engineering things.
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Contributor to the Executive Director

  • Hack Club
  • Nov 2021 - Present


Jan 21, 2022
Jan 21, 2022
Flew a plane
Night cross-country was fun! Couldn't record anything great with my phone but here's a neat short video of the great view over San Antonio. Polywork wouldn't let me upload a video so it's on YouTube.

Jan 19, 2022
Jan 19, 2022
Developed a website
Proud to introduce my new personal website!

I stripped it down a lot, replacing wonky designs with more text content and personality. Personally a much bigger fan of the new design than any previous ones, despite the simplicity.

I also built an API for, uh, stalking me. I'm looking forward to using the historical data I'm storing on my IRL activities for some neat datavis in the future.

See it at kognise.dev
Jan 05, 2022
Jan 05, 2022
Developed a website
🚢 Just finished overengineeRING, a modern-day webring of people who make things! Build cool stuff? You should join :)

Jan 02, 2022
Jan 02, 2022
Built a utility
Built a PWA
Designed website
Wrote JavaScript
+ 2
Built an app for automating weight and balance calculations for flying using Next.js. Does all the basic weight-arm-moment things, as well as some more advanced envelope calculation.

As this is primarily designed for iPad, I had to deal with an absurd amount of Safari quirks. I also ended up filing a bug in WebKit for one! One of the main things I took from this project is that Apple is really eccentric.

Right now the presets are hardcoded for the specific planes at the flight school I've been flying at. Eventually I may spend the time to make it more of a portable app with a preset management system, but that would add considerable complexity and might even require an account system.


Dec 31, 2021
Dec 31, 2021
I finally got to spend some flying this Wednesday and Thursday! Today, the plane unfortunately wouldn't start up so I didn't get a chance— but I did get to take a pretty neat picture.

There's a cold front coming in on Sunday which'll make the weather a lot more tolerable next week. It's been super hot which isn't that fun in a small box in the sky.
Dec 09, 2021
Dec 09, 2021
Excited to copy-paste more productively than ever before with my StackOverflow keyboard :)
Get your own page like this