hello. I'm halcy. here's some posts:

New Features in Mastodon.py 2.3

Mastodon.py 2.3.3 is finally tagged, and here’s a few new things that it supports that I think are neat!

In an earlier draft of this post, it was version 2.3.2, but I noticed during writing that I forgot to document the new Collections endpoint …

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2026 Autumn Seasonal Anime Preview

Well, this was fun to write last time, so I’m going to try to do it again - an Anime Season Preview Post, this time featuring Autumn 2026. As before, skipping any sequels, since those are usually just The Second Season Of Thing. But before that:

Looking back

Which series …

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QR Codes that can be read multiple different ways

After seeing a Mastodon post about slightly messy QR codes recently, and another post pointing to a tutorial for how to read QR codes without a computer a while before that, I started messing around a bit with QR codes, and eventually ended up wondering if there are ways to make QR codes that scan with multiple different results, maybe exploiting the different quirks of different scanners or using camera tricks. It feels like something that somebody at some point would have tried.

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2026 Summer Seasonal Anime Preview

I like to watch seasonal anime, and posting about it. Instead of just posting a giant Mastodon thread, I’m going to try something new this season: Writing an aniblogger season preview post about the shows that I decided to give a try!

Lets start with the highly anticipated show …

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Transmitting data via ultrasound without any special equipment

There are secret messages flying all around you all the time, being transmitted via, most of the time, electromagnetic waves going from antenna to antenna.

Frame taken from the music video for Secret Messages, showing a man with big hair and aviators in front of a big sattelite dish, arms crossed

ELOs “Secret Messages” is a song about posting conspiracy theories via WiFi.

But what if you need to get a few bytes from device A to device B (one of the hard problems in computer science!) and you don’t feel like making sure they’re both connected to the same network? Well, fortunately, another channel is available to us - sound, or for a more fun and less-audible experience, ultrasound.

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I hope you've found what you were looking for. love, halcy.