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2025

Hosting on a vape

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The chip is marked PUYA C642F15, which wasn’t very helpful. I was pretty sure it was a PY32F002A, but after poking around with pyOCD, I noticed that the flash was 24k and we have 3k of RAM. The extra flash meant that it was more likely a PY32F002B, which is actually a very different chip.1

So here are the specs of a microcontroller so bad, it’s basically disposable:

24MHz Coretex M0+ 24KiB of Flash Storage 3KiB of Static RAM a few peripherals, none of which we will use.

You may look at those specs and think that it’s not much to work with. I don’t blame you, a 10y old phone can barely load google, and this is about 100x slower. I on the other hand see a blazingly fast web server.

bogdanthegeek.github.io/blog/projects/vapeserver/

Cómo medir el pulso cardíaco mediante Wi-FI con precisión clínica

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Un sistema bautizado como Pulse-Fi logra captar el ritmo cardíaco de una persona a hasta 3 metros de distancia usando únicamente señales Wi-Fi y algoritmos de aprendizaje automático. El prototipo funciona con hardware de muy bajo coste (ESP32 de 5–10 dólares o Raspberry Pi de ~30 dólares) y mantiene la precisión en 17 posturas y situaciones distintas...

blog.elhacker.net/2025/09/como-medir-pulso-cardiaco-mediante-wifi.html

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2025 06 01

Reinstalè el sistema en mi portátil; ahora llevo casi dos horas averiguando como instalar los controladores de la iluminación de teclado y al fin descubrí por casualidad que se enciende con Fn+Space sin ningunos controladores adicionales.

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The knights who say NI

With currently happening corporate GenAI frenzy, search engines have diminished in value for queries which are any bit beyond the general or mainstream content.
I tried today looking up some tech topic - I got a bunch of links with generated irrelevant bullshit preceding self-advertisement of the page owning startup.

Now, looks like we have to rely on the old way of mouth-to-ear recommendations to note down authors of useful, insightful or delightful content.

So I am going to have a page with links to brain-crafted content I went across and liked.

P.S. You've probably got it, but for just in case - NI in the title of this post stands for NAtural Intelligence.

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Always be bold

The sermon in one TV-show was about faith. A catchy statement was about true faith staying strong and never fades in difficult times or times of trial and ordeal.

That's relevant to the faith on yourself as well. When you are down, the faith in yourself is something you need, and something you tend to loose, but remember - you had it, now you stick to it, because that is the faith - sticking to it no matter what.

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diary record

A cognitive bias is an amusing thing to observe - when struggling with the problem for a while, having the documentation in front of your eyes, with the simple explanation given in plain English - you suddenly get it and see that all the complexity was just your own overthinking induction. Not quite an aha-moment you would look for, but still there is fun in it.