@chendo

607 Followers
209 Following
1.1K Posts

Systems enthusiast, problem solver. I like games, photography, home automation, bouldering, 3D printing, and building random shit.

Co-founder at Assembly Four. Creator of https://shortcat.app and https://geotagalpha.app. Previously ran a Mastodon instance with 400k+ users 📈

Pronouns: he/him/they

#3dprinting #photography #infra #ruby #homeautomation

Bloghttps://chen.do/

I nerdsniped myself into checking the claimed specs of Thermaltake's GM5 motion platform before I installed it on my rig:
* figured out serial commands to control actuators
* recorded motion at 120fps, loaded into Tracker (open source video analysis for physics experiments)
* exported time/position data to CSV
* gave it to Claude

It exceeds the claimed 250mm/s speed by hitting 300mm/s mid-stroke, but fails the claimed 0.4g acceleration (measured 0.36g)

I stumbled across this 3 Michelin star onsen in Beppu and I love the website: https://www.hyotan-onsen.com/english
TIL our fire ratings go to Catastrophic.
My cat is home and I've confirmed that both she and her waste is radioactive. It looks like I need to stay 2m away to have the same dosage as being on a plane at cruising altitude. Highest measurement I got was 60uSv/h when holding the dosimeter right next to her neck. For comparison, background radiation in my office is 0.05uSv/h, and a chest x-ray is 100uSv

I just shipped Shortcat v0.12.0, which I'm dubbing the Emoji Update. Unicode 16.0 emojis, and now includes all the variations (skin tone, genders, etc), including making more metadata about the emoji searchable (categories and subcategories).

Last Shortcat update was Jan 2023 >_>

Getting the toolchains up to date was a challenge as big build changes in Xcode as well as the JS tooling.

Success! I bodged a garage remote onto an M5stack Atom Lite (ESP32). It supplies 3.3v to the remote, and uses a GPIO pin to simulate a keypress. Only took me about an hour and a half, including the firmware side, which ended up being ESPHome. Frustrating part was debugging unreliable wifi which was resolved (for now anyway) by disabling power save.

Today's project was to repurpose some air quality sensors and put them in the ceiling of my kitchen, and the common hallway next to my kitchen. This was to confirm the theory that the smoke that was somehow getting into my lounge room from a neighbour's back porch 20m away via the common ceiling,

This graph is pretty strong case for my theory... The problem is, what's the most effective way to stop it?

Side note: Home Assistant dashboards suck. What are other people using?

I finally beat it, but the final challenge is stupid and I cheated (but I'm pretty sure you're meant to cheat)

I was checking up on a cool energy storage idea that uses old mine shafts and weights to store energy when suddenly:

https://gravitricity.com/projects/

Projects - Renewable energy storage | Gravitricity projects

We are currently developing gravity energy storage projects in existing mineshafts. Future projects will be in purpose-sunk shafts in countries around the world.

Gravitricity | Gravity Storage
I'm researching how much doors cost when suddenly: