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IndrekR

1,961 karma · joined March 27, 2015

An electronics engineer. You can contact me via indrek@hedgehog.ee

Am open for good chat on topics that matter in life and elsewhere.

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IndrekR··on Unlocking the Duron and Athlon using the pencil (2007)
1999 was first gen, Slot A based. Second generation (Thunderbird) Socket A based Athlons (and Durons) described here were released 2000.
IndrekR··on Yerba mate, from Paraguay to Syria
Ilex vomitoria
IndrekR··on Politicians fall sick after drinking raw milk to celebrate legalising raw milk (2016)
(2016)

Also covered a while ago: https://news.ycombinator.com/item?id=30808990

IndrekR··on Interview with a blind developer on how he works (2017)
Previous coverage from 2019 where the author commented as well: https://news.ycombinator.com/item?id=21898537

Related topic from 2020 (Ask HN: I'm a software engineer going blind, how should I prepare?): https://news.ycombinator.com/item?id=22918980

IndrekR··on JetZero: Ultra-efficient blended wing body jet
New composite ones like A350 and Dreamliner have cabin altitude of ~1800m
IndrekR··on Radios, how do they work?
NFC is not really a radio. Basically it uses a loosely copled transformer. Works much closer than 1 wavelength and only magnetic field matters.
IndrekR··on The Real-World Locations of 14 Sci-Fi Dystopias (2014)
This reminds me The Meaning of Liff by Douglas Adams and John Lloyd: https://en.wikipedia.org/wiki/The_Meaning_of_Liff
IndrekR··on The world of Yakuza fan magazines (2009)
(2009)
IndrekR··on Spnec fast-tracks ₱200B solar farm in Central Luzon
`agrivoltaics’ seems to be common.
IndrekR··on Spnec fast-tracks ₱200B solar farm in Central Luzon
PV panels will be protected the same way as buildings. Not much difference there. If you can build a house, you can build a PV-farm.
IndrekR··on Nine US states are teaming up to accelerate the adoption of heat pumps
That sounds like a fantastic opportunity for a fresh company to take over the market. Heat as a service.

It costs about 2kUSD to get air to air exchange heatpump installed here (minisplit, includes the cost of the pump, EU). Takes approx 3 hours.

IndrekR··on Current Software Engineers Have No Deep Knowledge (Jonathan Blow) [video]
It is using mDNS/Bonjour for the same benefit.

mDNS https://en.wikipedia.org/wiki/Multicast_DNS

Bonjour https://en.wikipedia.org/wiki/Bonjour_(software)

IndrekR··on Current Software Engineers Have No Deep Knowledge (Jonathan Blow) [video]
Still using SVN here along with git. Not for coding, but storing CAD/EDA data. Large file support is the key here. Git LFS unfortunately is not very good and as soon as your repos grow into tens of gigabytes, git is not very fast anymore.
IndrekR··on Current Software Engineers Have No Deep Knowledge (Jonathan Blow) [video]
> How long did we use RCS and CVS and Subversion before modern alternatives like Bitkeeper, Mercurial, Git, et al. entered the scene?

For Subversion, about a year.

IndrekR··on Intel's Humbling
Apple came from recreational “there is now a 10 times cheaper CPU than anything else and I can afford to build my video terminal into real computer in my bedroom” and “maybe we can actually sell it?”. [1]

ARM literally came from “we need a much better and faster processor” and “how hard can this be?” [2]

[1] https://en.wikipedia.org/wiki/History_of_Apple_Inc.#1971%E2%...

[2] https://en.wikipedia.org/wiki/ARM_architecture_family

IndrekR··on The Soviet 1801VM2 LSI-11 Processor (2021)
Yes, on CVAX: https://micro.magnet.fsu.edu/creatures/pages/russians.html
IndrekR··on Tractor cab looks like a space ship (2021) [video]
Lamborghini still makes them (owned by SAME): https://www.lamborghini-tractors.com

There is also a tractor company called FERRARI, but they have nothing to do with Enzo Ferrari as far as I know.

IndrekR··on Modeless Vim
To confuse matters more, in this part of EU the coffee cake is made with coffee and tea cake is made without tea.
IndrekR··on JAL A359 at Tokyo collided with Coast Guard DH8C on runway and burst into flames
Cabin crew are also eyes for the flight crew. Relevant discussion about the Shatner’s seat: https://news.ycombinator.com/item?id=13824985
IndrekR··on Slow Electricity: The Return of DC Power? (2016)
I (as someone who designs electric and electronic equipment every day) agree. Low Voltage is a very specific term and typically means <1kV AC and <1.5kV DC in the industry: https://en.wikipedia.org/wiki/Low_voltage
IndrekR··on Can Microsoft Flight Simulator help me learn to fly or make me a better pilot?
I was visiting local flight school and checked their FNTP II MCC simulators few years ago. Instructor told me they will not let any students do training on simulators before they have real flight hours.
IndrekR··on Tesla battle with Swedish unions spreads to Denmark
My main complain this season is that driver seat warming/steering wheel warming can not be controlled from a physical button or via API/app (today it was -15°C here). In cold weather, the rapid charging speed could be better, I heard that this has improved on newer models that also have larger battery. Real range is around 300km when it is below freezing and 480km during summer. https://www.ioniqforum.com/ Is good place to get feedback from other users.

As this is HN, then I also have to mention that Hyundai API (bluelink) has limits on how many queries you can do in a 24h rolling window. 20 or 50 queries, depending on the type…

IndrekR··on Tesla battle with Swedish unions spreads to Denmark
Single data point, but early 2022 I got IONIQ5 instead of Model Y due to Musk's public comments. 70'000km later am still happy about it.
IndrekR··on Bidding error sees Finnish day-ahead power price tumble
The limits are there. -500€/MWh and 4000€/MWh. It did hit the lower limit for 10 hours in the row from 14:00 till midnight. Before 14:00 they were not the last bidder, so prices are higher there. Price on the market for everyone is set by the last bidder who fits in the predicted consumption pool.
IndrekR··on My primality testing code is faster than Sir Roger Penrose's
The one you saw on the blackboard may also be the Smith chart: https://en.wikipedia.org/wiki/Smith_chart
IndrekR··on Typing fast is about latency, not throughput
Using MonkeyType: https://monkeytype.com/ Source in GitHub: https://github.com/monkeytypegame/monkeytype

Have 2 minute sessions (2/4/6 minutes total) as a warmup routine with 10k English words to get my fingers moving in the morning.

IndrekR··on Hitler-Mannerheim Recording
Two microphones are clearly seen on the picture in the article.
IndrekR··on Best Night Vision vs. Darkest Room [video]
Infrared is a wide range. Ambient temperature black body radiation (LWIR) is typically detected between 7..14um. Refractive optics that works from there to visible range (380..700nm) is to my knowledge still unsolved problem.
IndrekR··on Best Night Vision vs. Darkest Room [video]
Thank you for that! Indeed the world has moved on since last time I worked with SPADs (2011). Canon progress you linked seems to be outlined well in several articles published by Kazuhiro Morimoto. Most importantly 3D-stacking the pixel readout with back side illumiation and getting rid of discrete "multiplication wells" which undergo avalanche independently.
IndrekR··on Best Night Vision vs. Darkest Room [video]
Most likely not. SPADs are good for detecting single photons (I have designed electronics for this), but to quench the pixel after every detection you need significant dead-time for the pixel. Single pixel needs to be an array here, size of which defines the dynamic range of the pixel. Each element within the pixel can not be much smaller than the wavelength to be detected. That means you need significant array of arrays to do any meaningful imaging — sensor will be very large.
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