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lrasinen

415 karma · joined December 11, 2023

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lrasinen··on GenAI and erroneous medical references
In similar vein: I've asked ChatGPT (3.5) electronics questions. It happily generates non-existent links to schematics images, and then refers to the schematics in its answer.
lrasinen··on City Street Orientations Around the World
I've lived mostly in non-grid or barely-grid cities and towns. My youth was spent next to a forest.

The closest thing to grid around here is southern Helsinki, and it's also my least favorite area to navigate in. I'm always off by a block or two, and it feels like it's all the same, no landmarks or character or sense of scale.

But when I'm just a few km to the north, with diagonal streets etc, I can locate myself much easier.

lrasinen··on Explaining the SDXL Latent Space
> But SDXL can draw hands consistently, so ... it's a tough choice.

Looking at the article photos it still has some way to go. I counted 3 cases of missing fingers, two cases of extra fingers (on the cartoon girl), and a few arm poses that in real life would need medical attention.

lrasinen··on SI Units for Request Rate
Feynman already did that: https://longnow.org/essays/richard-feynman-connection-machin...

"By the end of that summer of 1983, Richard had completed his analysis of the behavior of the router, and much to our surprise and amusement, he presented his answer in the form of a set of partial differential equations."

lrasinen··on FDA says 561 deaths tied to recalled Philips sleep apnea machines
Ditto. Waking up after the first night with and realizing I've lived in a fog for a year or so.
lrasinen··on FDA says 561 deaths tied to recalled Philips sleep apnea machines
Volatile organic compounds from the foam breaking down. Formaldehyde was mentioned in some of the reporting.
lrasinen··on Which shows got their finale right, and which didn't?
Not quite; the plan was always to go for five seasons, but the PTEN network closing up shop put season 5 at risk.

Sleeping In Light was always intended to be the finale; once season 5 got secured they shot another episode (which was also great) to act as season 4 finale.

The uncertainty with season 5 did play havoc with the pacing of the arcs. Season 4 did have to cover a lot of ground to get the most important arcs to close, so parts of it feel rushed, and vice versa the beginning of season 5 takes a while to get back to speed. Sigh.

lrasinen··on The Metric Red Herring (2022)
Granted.

But such conditions are rare and localized. When looking for extreme dew point values, I found this statement: "The highest dew point ever recorded was 35 °C, or 95 °F. This occurred on 8th July, 2003, in Dhahran, Saudi Arabia. This happened because the air temperature was 42 °C, or 108 °F, and the relative humidity was 68.5 %."

So tropical latitudes might care about temperature / dew point near those numbers, Northern Europe and friends spend their time worrying about freezing.

lrasinen··on The Metric Red Herring (2022)
Dunno, volts and amperes are working quite well in day-to-day life. And if you're into electronics, ohms and farads of various sizes.
lrasinen··on The Metric Red Herring (2022)
100 F is hardly a temperature that could kill you, unless you completely neglect hydration. But not drinking will kill you happily at lower temperatures.

Also, living in a climate where winter temperatures often hover around the freezing point, you develop a healthy interest in it.

As an example: If it's been a few days below 0 C, and then it warms to 3 C, the snow on the sidewalks will have compressed to ice whose top layer will now melt and create absolutely lethal walking conditions.

Or if it freezes after having sleet conditions (0-4 C maybe), you get this craggy ice that's not as slippery but is uneven and thus a hazard in its own way. Also very miserable for bicycles.

Anders Celsius was a Swede. He knew.

lrasinen··on Lilygo T-Keyboard: An ESP32 Bluetooth Blackberry keyboard
On a regular keyboard all the time. It's the left shift that gets no love.

(Finnish layout, not sure if that makes a difference)

lrasinen··on What Bed Linen Can Teach Us About Usability
Step 2: "... then tie the cover's ties to the convenient loops."

What if you got neither (as is the case with all duvets and mu single one-hole cover over here)

lrasinen··on What Bed Linen Can Teach Us About Usability
Living in the land of three-hole duvets, we do have one children's duvet cover that only has the bottom hole.

It's not that much harder. My process is flipping it inside out, then sticking your hands in and gathering the fabric on my arms until I get to the far end. At that point grab the duvet through the corners, lift and shake to straighten.

Obviously it helps that it's kiddie size and I'm just shy of 2 m, but it's not that different from the three-hole "put hands through holes, grab duvet and shake".

lrasinen··on How to solve the "Mastermind" guessing game? (2009)
There's nothing large about that space. With 6 colors and 4 choices you get 1296 possibilities. Would have been peanuts even for the first 8-bit home computers.
lrasinen··on Chemicals of "Concern" Found in Philips Breathing Machines
Happily mine is a ResMed so I don't need to make that choice.
lrasinen··on Chemicals of "Concern" Found in Philips Breathing Machines
The article states "[WHO threshold proposed by Philips] allows for far higher formaldehyde emissions than benchmarks used by other organizations, including the Environmental Protection Agency."

The WHO threshold is, based on quick googling, 0.08 ppm which sounds pretty reasonable. I have been unable to find a corresponding EPA value. Anyone got better luck?

lrasinen··on Chemicals of "Concern" Found in Philips Breathing Machines
That was the original polyurethane foam, this article talks about its replacement.

Still, sucks for the affected. I just got my CPAP machine and if I had to choose between cancer or constant sleep deprivation, I'm not sure which way I'd go.

lrasinen··on Chemicals of "Concern" Found in Philips Breathing Machines
Formaldehyde.

Nothing on concentrations or anything, which makes it difficult to assess the risk level, compared to e.g. a cheap bed made out of particleboard and foam mattresses. Meh.

lrasinen··on Show HN: Watering my Christmas tree with ESPHome
Also made one for this year. My particular challenge is that we need a heavy-duty tree stand to account for feline perturbations. This means the water capacity is pitiful (0.5 litres, perhaps). Also there's not a lot of room for float switches.

My design has an optical water level sensor and a cheap peristaltic pump, plus an ESP8266 for sanity ("if on for more than 5 mins, sound the alarm").

Sensor: https://a.aliexpress.com/_mtzF1L6 Pump: https://a.aliexpress.com/_mrGsfVO

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