HNHacker News
TopNewBestAskShowJobs

Prcmaker

442 karma · joined April 6, 2020

Mechanical engineer, R&D. Formerly radiation equipment developer and optics researcher.
submissionscomments
Prcmaker··on Running a Raspberry Pi with a read-only root filesystem
I haven't had an issue with SD cards where Pis had reliable power. Where I used to live though we had frequent power cuts, of only a couple of seconds, a couple of times a day. SD card corruption was a major pain. Even in areas with more reliable power, for a 24/7 on device, occasional power outages have lead me to move away from Pis. Battery backups are, of course, an option, but increase the cost for a reliable and simple system.
Prcmaker··on Mazda’s rotary engine in the age of the electric car
I'm literally waiting for it, have been for quite a while. Small cars have numerous benefits over just being sporty. An electric, or even a hybrid 86/BRZ or miata would be great, but can't be compared to the mini or fiat, and while tesla might be fast, it's huge. Even with a price increase these could be more affordable than a lot of sports cars. The 86/BRZ has been a huge seller too.
Prcmaker··on Fifty Things you can do with a Software Defined Radio
I have a soft spot for SDR. I've only done a bit of it, but the mathematical techniques I learned from it helped kick start my career. While I worked in a different field, having made friends with frequency and phase analysis was hugely powerful.
Prcmaker··on Spreadsheets are all you need
Cool, the modern equivalent of 1-800-i-really-enjoy-carpeting.
Prcmaker··on Ask HN: If you could spend $100k to get healthy and fit, how would you do it?
70comments, many with good input, many with questions. No response.

Posting on the internet is easy. As is buying a book or downloading an app.

One might argue accountability is wanting.

Prcmaker··on As a Tech Lead I feel more like a manager and I hate it
I've found most tech lead jobs to be heavy on the leadership. Leadership could be separated from management, but I find today it rarely is.

The best tech leads I've worked with have owned that, and helped their team do the tech while leading the work from a high level. The worst have insisted on holding in to low level work, letting their team suffer without direction.

It could be a company problem, it could be a leader problem, but in my experience it's been a company/leader communication problem, or a leader failing to follow through on what they agreed to.

Prcmaker··on Ask HN: If you could spend $100k to get healthy and fit, how would you do it?
To extend on what I've said above, exercise was not my thing at all. It took me time to find what I needed not only to start, but to stick at it. False starts a plenty, amongst boredom and apathy. Perfect now, no, far from it, but better, and that's better.
Prcmaker··on Ask HN: If you could spend $100k to get healthy and fit, how would you do it?
If that's what you need to spend to stick with it, hire someone, full time. A lot of people would be happy to take that money to keep an eye on you, and hassle the hell out of you. I know I would.

Consider what would actually make you do something, then pay that person to do it.

Prcmaker··on Library of Juggling
Your passion can also be soul destroying, or body destroying. Friends who have left the industry often site career-ending injuries, or that they were on track for a permanent disability.
Prcmaker··on I spend £8,500 a year to live on a train
Damn, 49euro/month seems downright reasonable. I used to pay more, a decade ago, for a student ticket in Australia.
Prcmaker··on Library of Juggling
Oh, and to tour other point, I noticed a gap between juggling and juggling performance. There's an article elsewhere in this post on Gatto, that sums up quite well how audience perception of difficulty is quite limited. This impacts a juggling performance severely, but has no impact on someone who likes to juggle. I suppose the same could be said of a lot of things though, without a technical eye, a lot of Olympic competitions are impressive, but I can't tell good from better.
Prcmaker··on Library of Juggling
I remember learning about Gattos shift of career. He was someone me and my friends would watch with admiration. When we learned he'd stopped, we were disappointed, but didn't question it.
Prcmaker··on Library of Juggling
Heh, to some extent, this is what I did. School was easy (low standard of eduction), school life was boring (team sports or nothing), so I found something that interested me. I learned to juggle, amongst other things. Got decent, then learned to perform.

I performed most friday and saturday night in late highschool, assorted gigs I got through contacts or from audience members. Graduated school, worked long enough to build some savings and buy a flight to Europe, and hit the road with a backpack.

I stuck with it on my return for a while, but ended up leaving it for 'normal' career.

Prcmaker··on Library of Juggling
Early in my real juggling days, learning mills mess, followed by Boston mess was eye opening. I'd self taught a three ball cascade and four ball columns a decade beforehand, waiting in a hospital ward. Learning those two messes, which for all their complexity, are just the same three ball cascade, opened my mind up to how much 'movement' could change what you were doing, and how it was perceived.
Prcmaker··on Library of Juggling
I've fond memories of getting very deep in finding new siteswaps, through the night and into dawn, many nights across Europe in 2008. I'd keep a notebook going and email friends back home once a week or so, just with a dot point list of numbers.
Prcmaker··on Library of Juggling
That was a walk down memory lane, thanks. A lot of names and places I'd thought I'd forgotten. In my teen years, what Gatto had been up to was a frequent point of conversation with a few of my friends.

I'd never compare myself with Gatto, we were in different leagues altogether, he was big time, I toured one year. The hard work that went into it, and the return on that time, makes a normal job look pretty great. Mad respect to the people that keep it up.

Prcmaker··on A former Gizmodo writer changed name to 'Slackbot', stayed undetected for months
My partners work has an employee named 'Admin'. IT struggles with what to do thee.
Prcmaker··on Strawberry Pop-Tart Blow-Torches (1994)
Reminds of the thermal lance made of bacon, a compressed bacon slug, a coaxial feed of oxygen, all ignited with oxy-acetylene . The lance is one of the favourite tools I've ever gotten to use, it's simplicity is amazing, and capability surprising.
Prcmaker··on I taught the Iliad to Chinese teenagers (2021)
Not watching them doesn't mean they don't exist, or that nobody watches them.
Prcmaker··on I taught the Iliad to Chinese teenagers (2021)
I think we do, but we also know how to fill air-time cheaply and show advertisements.
Prcmaker··on I taught the Iliad to Chinese teenagers (2021)
There's been a tremendous amount of media produced in the decades since recording film became simple. While the amount of trash produced may have changed one way or the other, the trash gets forgotten. It's easy to look back on a time where an iconic series was produced, say MASH, but forget Mobile One was of the same era.

I find the same to be true regardless of topic, the cars or tools of decades past that have survived often have great reputations, because they were built to survive. Those that weren't, have been forgotten.

Prcmaker··on From engineer to manager: what I love, what I hate
I really hope they do, but I'd hate to lose him as a colleague. Unfortunately it's likely to be one or the other.
Prcmaker··on From engineer to manager: what I love, what I hate
I've watched a colleague go from a good engineer, to a great engineering manager, to an awful project manager. I see him hating what his career has become and I feel terrible for him.
Prcmaker··on Safe and reliable production changes, and how Rivian recently got this wrong
It's not that I don't want improvements, I modify my cars for exactly that reason, but I want reliability. Improvement to the ride quality shouldn't be a manufacturers after-thought. UX adjustments are nice, adding further visibility to system features, great. OTA updates on systems impacting car functionality or safety, no. These things should be tested thoroughly enough before release to not require periodic updating. They should be stable and tested enough that an difficult to apply update is a reasonable cost. These are not the systems to fail and fix on repeat.
Prcmaker··on Hi everyone yes, I left OpenAI yesterday
Wow, that's a connection between the eras of my life I would not have thought existed. Thank you.
Prcmaker··on Ventum, Dimond, Cervelo – Why do these triathlon bikes look so weird?
I would suggest they mean to say front-facing surface area, which this bikes would indeed achieve over a standard design bicycle. One post in front of another will likely have a bigger impact on aero than a single deeper post. Could be phrased for better clarity I guess, but in an aerodynamic mindset, I think it's sufficient.
Prcmaker··on Why software engineers like woodworking (2021)
Woodworking is one of my many non-technical hobbies, used to switch off from the world. In particular, I will set out to make a 'thing' of non-critical nature, and abandon all measurement equipment. I'll still use a marking gauge without index markings, allowing me to mark a straight line, or a half way point, but that's it. Removing numbers from the process, for me, is a fantastic way to switch from an engineering mindset, to a purely creative one.
Prcmaker··on Is This Amelia Earhart's Long-Lost Plane?
I agree, very skeptical, but am also hopeful.
Prcmaker··on Is This Amelia Earhart's Long-Lost Plane?
This was the most reliable seeming information I could find from the companies website, they linked directly to the article.
Prcmaker··on Harmonics Explorer
Typically the Nyquist Shannon theorem is stated to say that you need to sample at twice the maximum frequency for complete reproducibility. Applying this to a digital signal, that does indeed work with a discrete Fourier transform. Applying this in the perspective of a sample rate (i.e. *.wav file of a recorded audio signal) does not hold true though in my opinion as the discrete signal has become a scalar, not a vector of the Fourier example.

If we take the highest reproducible frequency, two samples per wave, we find we could perfectly sample at the highest and lowest values of that wave, but we could have equally sampled the zero-crossing point, all depending on where in the phase the sample rate aligns with a given wave form. As the sampling has lost significant information, I believe a sample rate should be much higher than what Nyquist-Shannon would suggest for a high degree of reproducibility.

If your source is a digital signal, and you only need to reproduce that signal, of course 2x is ample.

← PreviousPage 2 of 7Next →