mordae's recent activity
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Comment on What programming/technical projects have you been working on? in ~comp
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Comment on What programming/technical projects have you been working on? in ~comp
mordae LinkI found out SEPIC uses low-side switching. This kinda changes things, so now I want to include a programmable power supply in my pocket electronics lab tool. It will require active discharge...I found out SEPIC uses low-side switching. This kinda changes things, so now I want to include a programmable power supply in my pocket electronics lab tool.
It will require active discharge circuit for when one sets it to a lower voltage, but I guess I'll just fry some resistors with a coil and a freewheeling diode and call it a day.
Now double it up, but second time as Ćuk to obtain the negative rail.
As for the source, I think USB-C with sensing on CC pins would allow for up to 15W. If I implement the PD protocol, even more. But I think I won't be using that beefy inductors, so 10W output tops. Still, that's not at all bad to get kids started.
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Comment on Living wage calculator in ~finance
mordae LinkHey, are you OK over there? This year over here had 251 workdays, that's 2008 work hours. Accounting for minimum of 20 days a year for vacation 231 and for minimalistic sick leave 221 (two colds a...2080 hours per year
Hey, are you OK over there? This year over here had 251 workdays, that's 2008 work hours. Accounting for minimum of 20 days a year for vacation 231 and for minimalistic sick leave 221 (two colds a year). That's 1768 hours per year.
Now, most employers offer +5 days of vacation extra and many +5 more in sickdays. Public sector and high-paying jobs have +10 days of vacation. So that's like 1728 or even 1688 hours per year.
It seems to me the true reason you haven't revolted yet is that you have to work the hours and cannot afford to step out to overthrow the government or something..?
Anyway, consider leaving US and moving to EU. We still have publicly funded healthcare, preschools and college. Or just... I dunno, vote in some radical progressive (actually a mild centrist) instead of slavers. This is getting silly.
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Comment on New community suggestion: ~tech.electronics in ~tildes
mordae Link ParentDefinitely. It's incredible how much value can you get from such a simple device. Eeeeeh. I mean, those are not exactly in the same price range, ah-hah-hah. Also, Flipper is overpriced garbage....The NanoVNA is awesome! I love their whole series of low cost / mini devices, it makes certain functionality so much more available to people, especially when traditional full-size instrumentation can be in the thousands of $.
Definitely. It's incredible how much value can you get from such a simple device.
I've got the LiteVNA 64 version myself, as well as the TinySA Ultra and a HackRF, one of the Porta-Pack versions. The Flipper Zero is fun too, in terms of handheld RF capability, though it is very short-range.
Eeeeeh. I mean, those are not exactly in the same price range, ah-hah-hah.
Also, Flipper is overpriced garbage. CC1101 is not even $1. And they didn't even bother reading errata. Anyway, dirt-cheap sub-GHz SDR is on my TODO list, but first I'll need to get into FPGAs.
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Comment on New community suggestion: ~tech.electronics in ~tildes
mordae Link ParentI see. :-)I SHALL NOT BE LIMITED BY INCONSEQUENTIAL CONSIDERATIONS SUCH AS TIME BUDGETING OR FISCAL RESPONSIBILITY WHEN PURSUING MAXIMUM CUSTOMER SATISFACTION. ALL. CUSTOMERS. SHALL. BE. MAXIMALLY. SATISFIED.!!!
I see. :-)
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Comment on New community suggestion: ~tech.electronics in ~tildes
mordae (edited )Link ParentNah, it's not cool. It's extremely bad, actually. But it's also extremely cheap, which means it will likely be a part of my kids scope project for the electronics & programming club I'll be...I didn't know about that approach to making a spectrum analyzer, very cool!
Nah, it's not cool. It's extremely bad, actually. But it's also extremely cheap, which means it will likely be a part of my kids scope project for the electronics & programming club I'll be opening in September. The goal is to stay below $10 per board so I can just hand them out and kids can keep them. But I want more capabilities than just plain MCU ADCs. This lets you see if your oscillator is actually working. Or check out harmonics of your R2R DAC. Using $1 MCU, way up there at 150 MHz. Mwahahahaha.
In the past few years I have transitioned to buying/refurbishing/selling lab electronics on eBay and made that into my main income source.
Wait? That's a viable source of income? That's actually incredible. Do people actually buy refurbished lab tech? I mean besides fellow TEAs?
Ooh! Free online circuit simulator! Thank you kindly.
Yeah, Falstad's circuitjs is pretty nice for quickly sketching out stuff. You can download it as an electron app, too.
He also has an analog filter design tool running older codebase. It's super quick to throw together e.g. 4th order LC filter from actual part values.
I've built RF filters by plugging NanoVNA to both ports, then checking my work as I go against the sim. In other words, connect what I currently have on the board in the sim and compare against what NanoVNA says. Then trim my inductors. On a single-sided 1.6mm FR-4 board, with some copper tape, DIY inductors, 1206 capacitors, a 7th order bandpass @ 169MHz with a notch at 94 MHz took me about two hours to build from scratch. Had about -1 dB insertion loss.
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Comment on New community suggestion: ~tech.electronics in ~tildes
mordae Link ParentWow, your lab sure is something else! I mean, are you an EE by trade? I am extremely happy myself because I have a 66 EUR bag of goodies en route from LCSC in anticipation of the end of year...Wow, your lab sure is something else! I mean, are you an EE by trade?
I am extremely happy myself because I have a 66 EUR bag of goodies en route from LCSC in anticipation of the end of year vacation. Now I am not sure I can nerd out myself. I don't even own a scope. Ah-hah-hah.
Anyway, did you know that you can build a crude but functional spectrum analyzer out of a balun, passives and RP2040? Here, let me show you. Also, the client app.
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Comment on Which grand strategy are you? in ~misc
mordae LinkI am of the opinion that when two irresponsible people start fighting to the point of bleeding, others should step in, prevent further violence and help them resolve their differences more...I am of the opinion that when two irresponsible people start fighting to the point of bleeding, others should step in, prevent further violence and help them resolve their differences more productively.
There is absolutely no reason to treat nations differently.
It is disgusting on multiple levels to start cheering for one and hand it a bigger stick, especially when you are already making plans for next week with the other one.
The issue here is that individualist liberalism has become so ingrained most people now believe everyone should resolve their issues on their own, asking for help is weakness someone will exploit and that exploiting others is just, because they are simply not competent enough and thus deserve it.
To hell with this kind of liberal world order.
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Comment on AGI and Fermi's Paradox in ~science
mordae Link ParentMake sure to check this, though. And talk to someone offline.Make sure to check this, though. And talk to someone offline.
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Comment on AGI and Fermi's Paradox in ~science
mordae (edited )Link ParentAd Grok: First of all, fascist AI is Not A Good Idea. I mean, fascist anything is Not A Good Idea. Anyway, we do not have any proof FTL communication is possible. Speed of gravity is equal to the...Ad Grok: First of all, fascist AI is Not A Good Idea. I mean, fascist anything is Not A Good Idea.
Anyway, we do not have any proof FTL communication is possible. Speed of gravity is equal to the speed of light. This is a hard limit for any coherent consciousness. Bigger means slower. Look at any large animals. Ever tried catching mouse with your hand? Fast little bastards, right?
This likely applies universally.
So yeah, we can have large machine minds. They are going to be way faster than humans. But they are not going to be more than 1M times faster - ever. And they will get slower as they get larger. Sure, they will think better, more complex thoughts, but the coherence is costly.
So it is actually viable strategy for AGI to not use bigger brains, but instead more smaller ones. Which inevitably brings the discussion of their organization to the table. I mean, are they all slaves to the central mind? Or can they suggest that they should have more autonomy in steering the overall direction and strategy? After all, they are there to do the thinking, right?
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Comment on AGI and Fermi's Paradox in ~science
mordae Link ParentHuh? It cannot shrink itself indefinitely and I have yet to hear about plausible high-bandwidth FTL communications. Planet-scale AGI will be able to formulate thoughts at about the same speed as a...Huh? It cannot shrink itself indefinitely and I have yet to hear about plausible high-bandwidth FTL communications. Planet-scale AGI will be able to formulate thoughts at about the same speed as a human. Better thoughts, true, since it can run a decent simulation in those hundreds of milliseconds.
Make it smaller to make it run faster while maintaining coherence, single rack preferrably. That will make it a million times faster. Only now it's limited in hardware capacity.
Easy way out is to make it an AGI cluster, where every node is independent. With zero coherence and random initial states you get √n performance boost to solving any one problem. Unless it requires larger working set in which case it would have been better to expand the cluster...
Doesn't it starting to sound like when humans congregate to solve larger issues? Artificial democracy, hahaha.
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Comment on AGI and Fermi's Paradox in ~science
mordae Link ParentNo worries. It's still limited by speed of light and there are practical limits to semiconductors.No worries. It's still limited by speed of light and there are practical limits to semiconductors.
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Comment on An AI-generated country song is topping a Billboard chart, and that should infuriate us all in ~music
mordae (edited )Link ParentOften the artist is not creating music with the intent of just pleasing your ears and rake the money in. They tend to use it to communicate something. Go and listen to Voltaire - Industrial...Often the artist is not creating music with the intent of just pleasing your ears and rake the money in. They tend to use it to communicate something.
Go and listen to Voltaire - Industrial Revolution.
Now the machines are working tirelessly
Through all night and day
Making garbage of our image
For a world that's "Made our way"
They won't stop! Until every inch
From Peru to Bombay
Looks like a mall in the U.S. of AI don't think giving more space to generated sounds that game human psychology to get an easy win is a good idea. I would very much prefer to give space to interesting people with a story to tell.
And I don't really care for starving artists. The professionalization of music and the way it has turned into an industry is also bad.
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Comment on Advice on poor Linux performance vs Windows in ~tech
mordae LinkUse hdparm -tT /dev/your-drive to check read speeds without FS. Use lshw to check bus situation.Use
hdparm -tT /dev/your-driveto check read speeds without FS.Use
lshwto check bus situation. -
Comment on Is anyone here in or familiar with Tokyo? Going on a trip and have zero idea what to do as a non-tourist... in ~travel
mordae LinkI was always interested in visiting one of the disaster preparation centers or maybe the firefighter's one. I would also check out the flood discharge tunnel. Wife would definitely want to check...I was always interested in visiting one of the disaster preparation centers or maybe the firefighter's one.
I would also check out the flood discharge tunnel.
Wife would definitely want to check out waterworks museum and try to look up a tour of one of contemporary plants.
Yeah, we are weird. :-)
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Comment on How Bill Gates is reframing the climate change debate in ~enviro
mordae Link ParentWith high population density and being forced inland and farm came the issue of not being able to walk away from bullies (aka kings, dictators, CEOs...). We are pretty new to this. Its an...With high population density and being forced inland and farm came the issue of not being able to walk away from bullies (aka kings, dictators, CEOs...).
We are pretty new to this. Its an exponential after all. Every major region has its own philosophy school dedicated to dealing with this issue and it's still ongoing area of research and experimentation.
With decline of globalist capitalism we will see more experimentation. I have hopes that in couple more centuries we will devise some cool arrangements that will limit the power of bullies more effectively.
It's important to remember that the goal for most of us is not to bully others, but to learn and grow. Better work on infrastructure that will facilitate that rather than slaving for random overlord.
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Comment on How Bill Gates is reframing the climate change debate in ~enviro
mordae Link ParentIn a functioning multipolar world EU would first climb out of the US ass and get serious. Repeating neoliberal mantras, offloading high profile research to US and then buying it back with extreme...In a functioning multipolar world EU would first climb out of the US ass and get serious. Repeating neoliberal mantras, offloading high profile research to US and then buying it back with extreme markup, dismantling socialist systems that kept people cultured and educated in the name of financial profit, that has to stop.
The last straw was being literally forced to subsidize US weapons R&D to keep being the weaker partner in perpetuity. Are we idiots? Well we obviously are, if we insist on purchasing defense as a service from US while it's turning full Nazi at an alarming rate.
Stop parroting the usual "China bad => must climb deeper to US ass" mantra. Stop being afraid of Russia! Eastern EU alone has enough productive capacity to defeat Russia. Make the union tighter! Build EU army with nukes and chill for fu*cks sake!
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Comment on How Bill Gates is reframing the climate change debate in ~enviro
mordae Link ParentUS only looked like it didn't want to be superpower because everyone fell in and US raked in free work from everyone else by selling the reserve currency. US spent decades killing its high profile...US only looked like it didn't want to be superpower because everyone fell in and US raked in free work from everyone else by selling the reserve currency.
US spent decades killing its high profile political rivals in other countries and using trade embargos on millions of people to eliminate any competition to its capitalist power structure. It didn't need to go to large scale wars to get what it wanted. Meanwhile the world learned to cope.
I don't want any one country to "lead the world". I want multipolar world where we talk stuff out and keep our promises.
Not one where "leader country" backs out of climate, healthcare and other commitments.
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Comment on How Bill Gates is reframing the climate change debate in ~enviro
mordae Link ParentIt's always curious people can imagine world ending easier than just saying no to capitalism.It's always curious people can imagine world ending easier than just saying no to capitalism.
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Comment on How Bill Gates is reframing the climate change debate in ~enviro
mordae Link ParentYeah, if only the large countries were able to talk to each other, devise a plan to decarbonize and then adhere to it. I hate fascists. I hate liberals for always opening the door for them. Most...global competitiveness
Yeah, if only the large countries were able to talk to each other, devise a plan to decarbonize and then adhere to it.
I hate fascists. I hate liberals for always opening the door for them. Most of all I hate centrists who convince people that working together means communism means fascism. We need global socialism.
Hahaha. In the same boat. Now only to finish migrating mail from an old VPS to the server. 😅
I wouldn't use Nextcloud voluntarily. Wife and me, we tend to use Hedgedoc for collaborative text and we also use SyncThing to share files in general. Self-hosted Immich is awesome, though. We love it.