• 9 Posts
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Joined 3 years ago
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Cake day: June 12th, 2023

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  • That is because your house is well insulated.

    In Belgium, we are living in a small house with roof insulation while renovating the main house.

    The small house gets up to 32 degrees inside when it is 34 outside as it has little thermal mass and is not sealed as it is an old stone atelier. We have to sleep in 30+ heat regularly during heat waves.

    Main house is better insulated. We resorted to blankets over the southern windows and it is around 26 inside without us living in it at all (windows open at night and shut during the day). When we shift to moving there, it will be warmer. We would have to spend 45 000€ to insulate the walls + 10 000€ for roll shutters. Heat pump is the next best option coming in at a small fraction of that.





  • I have “looked it up” and I have designed medical PPG devices professionally also. They absolutely do not “estimate” your heart rate any more than holding your finger to your wrist and counting your heart beats in a minute. That is also “estimation” just like literally all physical measurements that are measured for less than t=infinity are.

    Of course, there are manufacturers and models that do it badly, especially during weightlifting or heavy flexion/high wrist impact activities.

    1 lead ECG can also very very reliably measure your heart rate even during and that is what chest straps like the Polar H10 do in a variety of exercises.

    Here is a good overview of fitness watch PPG testing in a variety of scenarios and how it correlates to 1 lead ECG. This guy does tons and tons of extended tests. I just chose a recent one that has recent devices. Even sleep cycle recognition in modern smart watches is getting better and better correlation to EEG, which this guy also tests sometimes.

    Stress, recovery times, VO2max, etc… All of the “1 degree removed” statistics are generally a loose educated guess and generally crap.

    Heart rate, HRV, skin temperature, speed with GPS + IMUs, and to a certain extent relative activity intensity can be directly measured and are not a guess if the device is designed and tested well (which admittedly, only like 10% of devices are)

    Blood pressure measurements using the principle of delay between electrical signals and pressure wave elasticity is also being FDA certified right now as accurate to a certain percentage of medical pressure cuffs.







  • Is your printer network attached and scanning via flatpak packages?

    Network printing works fine, USB printing and scanning works also, it is just anything having to use saned that flatpaks can’t seem to use

    I have hopped through multiple distros and I have never once had scanning not work on a “normal” one after correctly setting up saned. Only bazzite because of the flatpak/system split (also why any embedded programming needs distrobox)





  • I mean, that is extremely easy to answer.

    1. It was an otherwise-wasted material that is already bonded, minimal tools needed for processing,

    2. In colder climates, fur was already attached to the leather which means that warm clothes could be crafted easily, fast, and by gathering all of the materials at one place. In early historic times, growing suitable plants and having the capacity to process them, strip them, straighten them, and weave them was not always possible and would be a full time job where it was, which means less time working in agricultural fields. Plus, animal fur has bigger growing seasons and is much warmer than any plant alternative.

    The real answer for the modern world is that leather is a byproduct of the very shitty industrial meat industry. The meat industry already has more leather than they can get rid of and it regularly goes into landfills. From an environmental standpoint, it is much better to use the leather than almost all other materials used for those tasks which burn oil and use oil to create them (every leather alternative is simply shitty petroleum-based non-recycled plastic, every one). From a moral perspective it is shitty to give more money to the meat industry, but they make the vast vast majority of their profits on the meat and not the hides. If everyone switched off of leather right now, the same amount of animals would be brutally murdered, but instead their hides would be dumped in landfills and the ocean after stripping it off of the meat.

    This isn’t even getting into waterproofing. Almost all clothing waterproofing is petroleum or animal oil based (wax is either petroleum or harvested from bees) except for natural rubber which also has a bunch of negatives.



  • I have written a more detailed comment on it before, but 2d printing is much more technically complicated than 3D printing, and the resolution is literally an order of magnitude difference (0.2mm vs <42um) and the printer has to print full color on any surface with microdots in a very very short time. People would throw the printer out if it took 10 minutes for a single paper like a large first layer takes in 3D printing.




  • 1983 Lenco LRP 5450 DD record player &

    1998 Yamaha RX-496 RDS stereo receiver

    My father-in-law got them for us 2nd hand for a joint present. Quite a decent system!

    Not a real audiophile, but it works well and we enjoy it.

    I also made a Google Home kind of thing out of it using an ESP32S3 that uses ESPHome, Home Assistant, and Music Assistant to make it a Spotify connect node to play Spotify through it, control it with an IR blaster, and use Voice Assistant with it if I am not too far (it has a single mema mic)