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Riding horses, hacking computers, phones and smartwatch.
pavel

Pavel Machek

Reply to @Petr90@mastodonczech.cz
@Petr90 @bycx @sesivany Elektricky pohon je cistsi... pokud se elektrina nevyrabi z uhli.

Ale me zajimalo jak je to s tou ucinnosti... Dle robota by ten sestitakt vyuzil jen 40% energie z paliva, coz mi prijde jako maly problem :-):

When burning gasoline, how much energy comes from H -> H20 and how much from C -> CO2?


ChatGPT said:

Thought for 50s
Short answer (using gasoline ≈ octane, C₈H₁₈):

About 41% of the fuel’s energy comes from H → H₂O

About 59% comes from C → CO₂
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pavel

Pavel Machek

Reply to @sesivany@vivaldi.net
@sesivany @bycx Tak ... vypada to celkem zajimave. Jen uplne nechapu, jak to bude s ucinnosti? Cast energie se ziskava spalovanim toho uhliku, ne?
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos Ok, so after a bit of fight, I got it to work. As usual, problem was elsewhere than I was looking: gl_init(), not shader.
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pavel

Pavel Machek

Reply to @lkundrak@metalhead.club
@lkundrak @ozzelot Co se snazim rict je, ze kdyz toho koupim 5 litru na cisteni notebooku (dle robota), tak datum spotreby zarucene nedodrzim -- zhruba o 100 let.
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pavel

Pavel Machek

Reply to @ozzelot@mstdn.social
@ozzelot @lkundrak No, myslim ze ke starym zasobam alkoholu se pyrotechnici nevolaji :-). reddit.com/r/chemistry/comments/14nxsc6/saw_this_on_twitter_can_someone_explain_what_or/
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pavel

Pavel Machek

Reply to @lkundrak@metalhead.club
@lkundrak Dekuju, mam tu X61t kde vyteklo lepidlo pod digitizerem, a snazim se s tim neco udelat.

Nevim, varovani je ze spatne skladovana IPA je velmi nebezpecna vec, a 5litru IPA by mi nejspis vydrzelo na ... asi tak 700 let.
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pavel

Pavel Machek

Jak se me chatgpt-5 pokusil zabit:

Pokud chcete čistit notebook, berte ideálně 99% IPA (rychle se odpaří, nezůstane povlak). \
Sprej je praktický, ale tekutina v lahvi je univerzálnější.

Mám Vám najít konkrétní odkaz na český e-shop, kde se dá IPA koupit v malém balení (třeba 100–250 \
ml), abyste nemusel kupovat litr?


You said:
Cena?


ChatGPT said:
Zde jsou orientační ceny isopropylalkoholu (IPA) ve vysoké čistotě (≥ 99 %) dostupného v České rep\
ublice v různých objemech a formách — vhodné při čištění lepkavé vrstvy z ThinkPad X61t:

...

Shrnutí podle objemu
Objem Orientační cena (vč. DPH)
100 ml ~60–86 Kč
0,5 l ~127 Kč
1 l ~100–280 Kč (nejčastěji kolem 189 Kč)
5 l ~500–700 Kč
20 l ~2 230 Kč (cca 111 Kč/l)

Doporučení pro vaše použití
Pro jednorázové čištění rámečku X61t bude nejpraktičtější menší balení (100 ml až 1 l).

...

Chcete-li mít zásobu pro více budoucích tabletů, 5 l balení je výhodné poměrem cena/objem (okolo 500–700 Kč)

---

Jo jo, koupit 5 litru IPA, skvely plan... Jak vyletet do povetri.
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pavel

Pavel Machek

Izraelsky general se tak nejak priznava cil "50 mrtvych za kazdou obet Hamasu" a "je jedno ze to jsou deti". Oops. Na yt hledejte "Leaked： 83% of Gaza ＂Combatants＂ Were Really Civilians [VAAguynnCxU]". Slovo na "G" jeste ve videu nepadlo, asi kvuli algoritmum yt.
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pavel

Pavel Machek

Czechs tortured a prisoner, and the president helped sweep it under the rug :-(.
https://www.seznamzpravy.cz/clanek/domaci-kauzy-zalobci-zverejnili-obzalobu-na-vojaky-z-afghanske-mise-omilostnil-je-pavel-282091

For me, they are murderers — they don’t belong in the army and they shouldn’t be walking free.

Here are at least the first names of those (very probable) killers:
https://www.irozhlas.cz/zpravy-domov/obzaloba-elitnich-ceskych-vojaku-zajatce-bili-do-obliceje-vydirali-a-pak-ho_2507171712_hrk
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pavel

Pavel Machek

Cesi umucili zajatce, a prezident to pomohl zamest pod koberec :-(. https://www.seznamzpravy.cz/clanek/domaci-kauzy-zalobci-zverejnili-obzalobu-na-vojaky-z-afghanske-mise-omilostnil-je-pavel-282091 Za me jsou to vrazi, nepatri do armady, a nemaji behat po svobode.

Tady jsou aspon krestni jmena tech (velmi pravdepodobnych) vrahu: https://www.irozhlas.cz/zpravy-domov/obzaloba-elitnich-ceskych-vojaku-zajatce-bili-do-obliceje-vydirali-a-pak-ho_2507171712_hrk?utm_source=chatgpt.com
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pavel

Pavel Machek

Reply to @Logical_Error@fosstodon.org
re: pmOS selling devices
Show content
@Logical_Error Yes, if done right, that might be fairly interesting. (It may also be hard to do it right). :-)
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos Well, deleting that line was simple. Replacing it seems to be more difficult. Plus img_attrs need to be modified to be RGB888, if I understand things correctly.
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos Yeah, you are clearly more comfortable modifying shader code than me :-).
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos It is too late for a bit of thinking, I'm afraid. I wanted to experiment with "good" debayering, and I have code that is unsuitable for GPU. I thought putting it back into RGGB format would be easy way to pass it through the shaders. Well, it was not :-).
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos Do you have code to share? :-). My version is a tui/ccam. I reformatted debayered RGB data back into RGGB bayer format to feed it into shaders easily, and hit the limit.
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos I wanted to do high-quality debayering, which turns 13Mpix into 52Mpix image if I want to pass it to existing shaders. Doing high quality debayer in the shaders would solve that. Really advanced debayer is probably too hard to do on GPU, but it should be possible to do better than current debayer-and-downscale.
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pavel

Pavel Machek

Reply to @dos@librem.one
@dos I tried to do something similar -- using good, external debayer, then attempting to use GPU pipeline. I attempted to use texture mode than 8200 pictures wide, and GPU did not like that. Rest can be seen in tui/ccam. Pass --cmd:convert, but clearly more work needs to be done there. If you have your code somewhere, I can try to play with it.
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pavel

Pavel Machek

Clicks machine (tui/ccam) can now do phase-detection auto focus. Unfortunately, for good focus, you need to integrate phase-detection and contrast-detection. Plus, you need patched kernel. Fun :-).
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pavel

Pavel Machek

OSSEU: koho uvidim v Amsterdamu a koho potkam v letadle? :-).

OSSEU: who will be there?
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pavel

Pavel Machek

Reply to @arnd@society.oftrolls.com
@arnd I'll be at osseu. I'll try to make it to your talk :-).
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