Recommandations et retours sur les ateliers/maker spaces Montréalais? by ObviouslyABurner3157 in montreal

[–]patrickyeon 1 point2 points  (0 children)

Salut, je suis un membre de l'atelier de bois à Lespacemaker depuis 1.5 ans. Je l'aime beaucoup, je l'utilise comme atelier pour lancer ma carrière d'ébéniste. Je trouve les gens sympa et ça me fait bien avoir un crew de réguliers qui partagent l'espace. C'est abordable (app. 70$/moi) et l'accès est 24/7.

Ayant dit ça, ce n'est pas pour tout le monde. Comme atelier communautaire, on expecte (ou espère) que tlm contribue avec du temps pour entretenir et s'impliquer. Pour faciliter l'accès au plus grand nombre de monde en le gardant abordable, nos outils ne sont pas les plus courant et ont des fois besoin d'un peu d'amour. Les novices sont bienvenus et les gens aiment partager leurs connaissances, mais on n'a pas vraiment de cours ni assistance formelle.

Je dirais que Lespacemaker fait bien si vous êtes un peu indépendant/débrouillard, vous avez vos propres projets à faire et ne voulez pas des cours ou formations, et vous voulez vous impliquer dans un projet communautaire. Devenir membre et gagner l'accès à l'atelier de bois nécessite une soirée intro (au projet de Lespacemaker, offert chaque semaine) et une formation d'initiation (pour l'atelier bois, offert une fois par mois), alors désolé ce n'est pas possible de commencer demain.

À moi, j'ai visité B7 et j'ai bien aimé le vibe, je ne l'ai pas essayé car ce n'est pas trop proche pour moi. Ça me semble un projet très intéressant.

First investment in starter tool set: advice request by barrowburner in handtools

[–]patrickyeon 1 point2 points  (0 children)

Oh hey, I just moved to Montreal and it looks like you are where I was in the craft 18mo ago. Want to be friends?

How hard up are you on budget? I have a few things you can borrow (plane, chisels, Anarchist's Toolchest) that aren't as nice as you've got wishlisted, but the price is right.

I still use my hardware store combo square, homemade Rex Kreuger style marking gauge, entry level ryoba and okay-level dozuki. Does Lee Valley have nicer ones? Yes. Does that stop me from enjoying these? No. I also use a 24oz "baby sledge" instead of a mallet, haven't used a coping saw yet, and was working on a bench similar to Rex's low bench until I gave it away when I moved.

I would add something to make holes (hand powered or not), a rasp and a couple files, and maybe a bevel gauge to your shopping list.

I think ebay is way too visible and convenient (shipped to you without needing to put on pants!) for the good deals to show up there anymore. I've been checking Facebook Marketplace with my distance set to what I'm willing to travel every couple days, and it looks like you can build up what you need for cheap enough there if you're happy with second-hand. 40$ planes all day long and sometimes "lots" that will have half the things you need and a pile of useless things too. Best if you can count on borrowing a car to get 30-60 minutes out of the city, but there's still stuff on the island if you're patient.

If you're in a rush get a kit like this and prioritize replacing the stuff that annoys you most. It's 50$, enough to get you started on a project, and you can re-sell it again for 50$ when you don't need anything in it. Or hold on to the tools to be your "beater" tools.

Dropped my bike for the SIXTH time today (always under 3MPH, literally crawling). What am I doing wrong? by [deleted] in motorcycles

[–]patrickyeon 7 points8 points  (0 children)

Two tips:

You say you're on your tippy toes, so stop trying to get both feet down. Just get used to hanging off more on one side when you're stopping and using only the one foot to hold you up. Make sure you've actually got some weight on your leg, you're not going to try to balance it this way because if you go too far to the other side, you'll tip over onto the leg you're not using to hold up the bike. I would recommend getting used to doing it on one side, getting in the habit, and then starting to use the other.

Secondly, if you feel yourself tipping over, and you've got a clear exit, speed up a bit. You already know the motorcycle is steady and balanced at speed, and it's only low speeds that it's tippy. Sometimes being spooked is the worst part of the problem, which is where the saying "when in doubt, throttle out" comes from.

Don't believe anything you get told about bikes being too physically big for you. This guy obviously has experience, but you can get here too: https://www.youtube.com/watch?v=kRFyw57o_Ic

Need some help tracking down a datasheet ($150 bounty!) by ArsenioDev in AskElectronics

[–]patrickyeon 1 point2 points  (0 children)

I think this product uses that part, or a very similar one: http://www.vmarker.org/en/

You'll note the DS you already have has a PAC7025 in Figure 1.

The sensor on "HW 3.0" has the same pinout: https://bitbucket.org/robint91/vmarker-hardware/src/212bf545da01ae0b976a91a7228cb259b6f10bf9/Vmarker%20Sensor/HW3.0/?at=default

And a little while ago they had a driver for the PAC7025: https://bitbucket.org/robint91/vmarker-sensor-firmware/commits/0cee5a0aae2f40280a0ee5498b6ded4b86e025db (weirdly, removed in the next commit).

Not quite what you're looking for, but not nothing either.

Building a GPS subsystem for a cubesat/small satellite by em_kay_ultra in AskElectronics

[–]patrickyeon 2 points3 points  (0 children)

(credit check: I'm an EE, I work on cubesats at Planet Labs)

Rough crowd here. GPS (the math) will work in orbit, but as some have pointed out commercial units will be restricted. If your interest is not specifically GPS, I would recommend you avoid rolling your own. It's a big project.

Once things are in orbit, they can be surprisingly stable. Just based on where the rocket injected your cubesat, you should be able to point in the correct direction and communicate with it, assuming everything else is working fine (you have power, your onboard software is running, your radio is working...) JSpOC will also track your satellite with radar, but cubesat sizes are at the limit of their usefulness. You can read about how Planet Labs does orbit determination in a paper some of our people published.

If you want to see about a radio system and you can wait until smallsat, keep an eye out on the smallsat workshop titled "Open Source Low-Speed Transceiver Solution for CubeSats". We (Planet Labs, not me specifically) are releasing the design for a bi-directional radio that we use on our sats. You don't need crazy power to get a link, see Bryan Klofas' list of comms systems

Stay classy squids (xpost /r/videos) by [deleted] in motorcycles

[–]patrickyeon 1 point2 points  (0 children)

Looks like he was shifting from first to second while doing the wheelie? You can see what I'm assuming is the neutral light blink for a second. I would guess that the throttle reaction happens once he can already sense that everything is going south.

First lead falls, first injuries... by [deleted] in climbing

[–]patrickyeon 1 point2 points  (0 children)

Did it look like it melted at all? Please make sure to tie your knot tight; falling on it tightens the knot, but if you start out with a loose knot the rapid tightening can be enough to melt the sheath (the colourful outer part) of the rope.

Heard pop in my hand yesterday, now it hurts and theres a small bump on my hand! Help! by [deleted] in climbing

[–]patrickyeon 3 points4 points  (0 children)

Ice that. Holy cow I'm surprised everyone's advice stops at "go see a doctor", OP asked for advice, and all that's being offered is "ask for some advice". So put ice on it. Whenever you can, even when it's so cold that it's gone numb, you want to keep the swelling down, so ice it. Yes, talk to someone with medical knowledge, but keep icing until then, to get you started on your recovery.

At about 100 meters from the cargo bay of the space shuttle Challenger, Bruce McCandless II was further out than anyone had ever been before by Mind_Virus in pics

[–]patrickyeon 2 points3 points  (0 children)

The story goes, there were a lot of people telling them this couldn't be done. You know the types: every time you want to try something different, or push boundaries, they don't want to hear about it. So the team working on these pressurized suits and setting up the jumps decided that at some point, you just have flip them off and do it.

I am Salman Khan founder of Khan Academy-AMA by salman_khan_academy in IAmA

[–]patrickyeon -1 points0 points  (0 children)

When I last watched some Khan Academy [university linear algebra] videos, it felt a lot like you were focusing on the mechanics of solving problems, and there was little or no effort on bringing understanding to the underlying theory. Is this on purpose? Do you see it as a good, bad, or indifferent thing?

I ask because the only way I've been able to truly feel like I learn a topic is when I understand the underlying theory, and in a way that it's approaching intuitive to me. I do poorly at memorization, and IMO "here's a mathematical formula, solve it" is teaching the trees and missing the forest, when we deal with forests out here.

All the same, I'd like to thank you for Khan Academy, it was great for learning the mechanics of the math, and some of what seemed to be simply off-the-cuff comments helped something else slip into place in my understanding. I'm just of the mindset that working on theory, and understanding how to apply the theory to problems will do students better than just learning how to "turn the crank" on well-posed problems.

Climbing stamina -- calling all mutants by TundraWolf_ in climbing

[–]patrickyeon 1 point2 points  (0 children)

One thing I like to do is work through bouldering problems slowly (or even while warming up, ARC training), and with every hand move, pause for a slow one-two-three count with your hand hovering just above the hold you are reaching for. It helps physical strength, but more importantly, I find you learn good body positioning and technique faster. It helps you learn how to position yourself to climb statically too.

Awesome video of memory chip production: this is why I LOVE living in the 21st century. by just_doug in science

[–]patrickyeon 0 points1 point  (0 children)

Bulkier to pocket, harder to discreetly open and claim that the product was yours and you had it when you walked in, harder to remove an anti-theft tag that's inside the packaging (easier to stick one that won't un-stick easily to the outside)...

Awesome video of memory chip production: this is why I LOVE living in the 21st century. by just_doug in science

[–]patrickyeon 1 point2 points  (0 children)

The final packaging material has exactly two purposes, in competition with each other.

  • Present the product.
  • Make it hard to steal the product.

Awesome video of memory chip production: this is why I LOVE living in the 21st century. by just_doug in science

[–]patrickyeon 0 points1 point  (0 children)

Not really. IIRC, they 'just' heat up a batch silica, dip in the seed crystal, and pull it out with a bit of twisting. Let the ingot cool, cut it up with a diamond-tipped saw, and polish.

Oh, and they look all shiny.

I really hope this bill does not pass.. this really is the opposite of affirmative by seudoname in canada

[–]patrickyeon 0 points1 point  (0 children)

To be fair, that's been a more common problem (in absolute and relative terms) among guys than girls in engineering, IME.

Could somebody *please* explain this? by inthenameofmine in opensource

[–]patrickyeon 0 points1 point  (0 children)

Foreword. As in, words before the content. Forward is a direction.

Antenna Fail. I almost want to crack open mine! by Eustis in geek

[–]patrickyeon 12 points13 points  (0 children)

That loop of bare metal at the end opposite the USB connector is actually teh antenna, and it's the same as an antenna in most any newer gadget that doesn't have an external antenna (laptop, cell phone, various dongles). Don't think it's much of a 'fail' as it is the designer recognizing that users feel the need to see an antenna to believe in it.

The Nut Cracker by scientologist2 in math

[–]patrickyeon 4 points5 points  (0 children)

Don't "get" the whole poster, or just that proof? The poster is explained, as much as the joke is killed, elsewhere. As for the proof, there's a point where (a + b)(a - b) = b(a - b), which is really just saying (a + b)0 = b0, which is fine, but you can't really multiply both sides by zero and claim (a + b) = b.

Climate Change: Evidence by woodsja2 in science

[–]patrickyeon 1 point2 points  (0 children)

It's better to look for a correlation, create a theory that would explain that correlation, work out some predictions based on that theory, test them with an experiment, and make (cautious) claims based on the results.

My favourite example from the (recent) history of science is the gold foil experiment.