kale

joined 2 years ago
[–] kale@lemmy.zip 6 points 1 year ago

I'm a mech E in the medical field. We're consistently understaffed. If I validate an Excel worksheet in Excel '08 or a Python program in 3.5 with a specific version of NumPy, we're probably sticking with those versions for a while. Every time I bring up re-validating with the latest version, keeping one old system running the old software requires fewer resources than me or a colleague re-validating.

My whole department is stuck on one version of Python because that was the most recent version when I had an emergency project and developed a data analysis algorithm. We validated it, then as new members were added to my team, they needed a copy, so we had to keep using it. I'll probably re-validate it to the next Python release. It's not only unit tests, or we could automate validation. Unit tests are a tiny part of validating software for making medical decisions. And software that directly runs a medical device (like firmware on an insulin pump) is an order of magnitude more rigorous than what I do.

Side note: there are people who somehow root their insulin pumps and run algorithms on them. There's a group that can get a PID control loop on an insulin pump that has a more simple control scheme on it (because that's how the FDA approved it). The company has been trying to get approval to use PID control in the US for years.

[–] kale@lemmy.zip 4 points 1 year ago* (last edited 1 year ago) (1 children)

The business strategy decisions behind CPU fab is really interesting over the past 15 years.

AMD made a budget clone of Intel two decades ago. Then Intel made a misstep and released Northwood Pentium 4. AMD used less power and was faster. And AMD decided to go with DDR memory, while Intel went RDRAM. Then AMD was king when they went AMDx86-64 for 64 bit and Intel went Itanium.

Then AMD made a huge miscalculation on the future of multicore computing and designed Bulldozer, while Intel got their shit together and went down the hyperthreading route and released CORE/Core2/Core2Duo chips. And Intel was king for a decade.

I don't know the exact timing, but AMD needed cash and sold their fabs to raise money, which became ~~TSMC~~ GlobalFoundries, sorry. GF learned how to make stuff small since smartphones became a huge market. Then AMD let an engineer run the company and she invested in the Zen architecture, which could be made by GF with their lessons from the mobile world.

This is my take. By AMD turning GF loose, GF could ~~date other people~~ work on mobile projects, which helped them learn.

It's a side note now, but Intel hung on to their fabs and lagged behind GF. AMD let their fab go and benefitted from it. EDIT: I had some facts wrong. It's possible Intel fabs are ahead of GF.

As a side note, Intel did try fairly hard to get into mobile like GF. They had the Atom chips and went for tablet, Ultrabook, netbook, and mobile. I had an ASUS Android phone with an Intel SOC. So it's not like they ignored mobile, but it didn't benefit them as much as TSMC.

[–] kale@lemmy.zip 2 points 1 year ago

I love MPFC, but some of the sketches are "meh". For every "Battle of Pearl Harbor", there's a "Confuse-a-cat".

Fawlty Towers is great. Mildly racist against the Spanish and Irish.

[–] kale@lemmy.zip 3 points 1 year ago

It takes 4 episodes to really build into the complexity. Then season 2 turns it on its head.

[–] kale@lemmy.zip 2 points 1 year ago

Red Dwarf is pretty good. Fawlty Towers is great. Someone recommended "Yes Minister" and the first season is awesome. The Hallmark of great comedy writing is if it holds up, and Yes Minister still is hilarious 40 years later.

Dark is a German Netflix show. It unfolds into something akin to "Lost" over the first four episodes. The ending doesn't suck, and they set up the end to where it's almost impossible to get it right. It's not an amazing ending, but it's impressive that they managed to make it not terrible, since it builds up to a near-impossible ending.

Squid Game is pretty great but gory. Letterkenny and Trailer Park Boys are quirky comedies with some rough language throughout.

[–] kale@lemmy.zip 2 points 1 year ago* (last edited 1 year ago)

The typical cause of this is a biomarker sticks to one side of an embryo, marking it as left (or right, I don't remember), but a twin embryo that is too close will see that marker on the other side and develop mirror imaged to the first embryo, right?

[–] kale@lemmy.zip 1 points 1 year ago (1 children)

Look at Sovol or Anycubic in that price range. I don't have direct experience with either. A good friend of mine had two Anycubics at one point last year and he said they were easier than his Creality.

[–] kale@lemmy.zip 7 points 1 year ago (1 children)

My third printer, I paid $70 for, used (ender 3 pro return). It was missing several small components, one big part (top aluminum extrusion) that required some machining with a drill press, and had a bad thermistor.

I don't think you can get a beginning printer for $100 unfortunately. Sovol and Anycubic make printers among the cheapest that are more beginner friendly (I think) than Ender, for roughly the same price. I have a friend with a Creality and an Anycubic Vyper, and the Vyper seems to be more beginner-friendly. I have two Crealitys and I love them, but both required a ton of modifications to become reliable.

Can you check your area for a local maker space? My local library has 3D printers for anyone under 18. Universities typically have a few of different technologies (SLS, SLA, FDM)

[–] kale@lemmy.zip 1 points 1 year ago

There are methodical ways of valuating a private (and public) company. Some are pessimistic and some are wildly optimistic. Your can legally use whichever one you want, only you must only use that valuation method for everything. It's illegal to value the company low for taxes and high for loan collateral. And if you sell it, you can owe back taxes if your valuation was off (sale price is the new valuation).

This is overly-simplified US accounting rules (from finance class 10 years ago)

[–] kale@lemmy.zip 5 points 1 year ago

He took it private so, although there can be shares, they aren't traded on the open market. So no positions to short.

[–] kale@lemmy.zip 1 points 1 year ago

If you have a filament runout sensor, the klipper default settings aren't great. If the sensor activates, the printer shuts down after about an hour, losing your home position. With a part on the bed, you can't re-home, so it's a wasted print.

The mesh leveling isn't automatic either. You might want to add either auto-load your default mesh leveling if you always use the same print surface, or put mesh leveling codes in the starting G-code section of your slicer.

I ran the pressure advance tuning and found that I needed a ton of pressure advance. My prints turned out much better.

I also got improvements by reducing the allowable deviation in the slicer (G-code files get much bigger, though), and I load files as STEP files directly in Prusaslicer. STL doesn't have curves, it's a series of planes. STEP files have geometric primitives and can have curves.

[–] kale@lemmy.zip 2 points 1 year ago

I also would like to know. My Moto G 5G suddenly lost fingerprint reader (as in, it's not even an option in settings anymore) and I think I need to reflash it.

 

I noticed a new background image on the Android podcast app this morning. I thought one of my podcasts changed their icon art. Nope, it's a Logan Paul podcast. I've never listened to any of his stuff. I only heard about him when he challenged someone to an MMA fight I think?

I only listen to Behind the Bastards, The Dollop, and Prosecuting Donald Trump, plus occasionally My Brother My Brother and Me.

I figured maybe one of my kids had subscribed or I had hit a subscribe button on the home page. Well, in the app, when I unsubscribe it immediately re-subscribes. I saw where other users had the same problem and it went away after an hour. This was 11 hours ago. I pulled it up on the Web version of Google podcasts. It looks like it unsubscribes but if I refresh, I'm subscribed again.

Any ideas? Is there a way to block a podcast?

Edit: Problem still persists 24 hours later. I'm not allowed to turn on the explicit filter either. On the app or on the web interface. What's a good android program that will record video of my screen and highlight taps? I want to record this. I think I still have OBS studio on my computer to show the web behavior.

 

I love how decisions have consequences. I try to not reload and try different options on my first play-thru. I roll with the decisions I make and enemies I create (usually accidentally in a firefight). With FO4 this usually didn't have an enormous effect.

I'll be vague in an example: I was caught doing something illegal and the settlement security made me an offer to "get out of jail free" if I did something for them. I wanted to finish the quest I was on so I opted to pay my fine and serve my time. And then I was notified that I was enemies with this faction.

In a random firefight with "bad guys" Members of this faction joined in the fight and then started attacking me. What's the harm in looting their ship when I'm done? I find out my companion (that I'm trying to develop) is part of that faction and very much dislikes me looting the ship. And he even makes comments that he's mad at me but he's with me until we finish the quest.

It's made ship travel much more treacherous since instead of having help I often have two enemies to fight.

This is like FO:NV where decisions changed the game as much as they do. It's great!

I think they nailed the "emergent gameplay" part really well.

 

I got klippy running on my expendable Monoprice Mini Select V1 and was brave enough to convert my CR-10 v2.

Compiled the firmware, flashed the CR-10 from my Raspberry Pi, got Moonraker to connect, etc. Everything looked great. The screen was a little dim (FIRST RED FLAG) but I could navigate with the front panel knob. I started by testing the fans one by one. The part cooling fan was running much slower than I thought it should at 100% fan (SECOND RED FLAG). The hot end fan wasn't on, and I figured that maybe it wouldn't turn on until I started heating the hot end.

I put in 150C and nothing happened. The runaway temp protection alarm tripped in klippy (RED FLAG). I bumped the hot end fan and it started spinning, again much slower than it should have (RED FLAG).

I looked at my control box cooling fans and they weren't spinning either. They're 12V quiet fans, and my buck converter lights were on, suggesting it was getting power. I did an emergency shut down.

I thought I'd power cycle the CR-10 and see if that helped. When I switched to power it off, it roared to life. Fans started spinning and the screen fully lit.

This entire time, I was powering EVERYTHING on the printer via USB from the Raspberry Pi. I had no idea this was possible. The board was flashed to klipper firmware only being powered by the Pi USB (not sure if that's the way it's supposed to be or not).

Anyways, this was a long story to get to the conclusion, but I thought I'd share my journey in case anyone else finds themselves in a similar situation. I should have started troubleshooting after noticing the part cooling fan wasn't as fast as it should have been. Also, CR-10 screen, MCU, and fans can be powered a little through the USB port.

 

I have spent weeks of tuning PETG to print on my modified CR-10. I would get regular failures and really stringy prints. I had trouble getting it to stick to the bed, and could only print really slowly.

I was dreading trying ASA, but I bought a roll of Polylite ASA, put it on the printer without drying it, and used a default ASA profile I found online (I didn't even start with a temp tower). The only changes I made was a minimum layer fan of 10% as my PETG fan shroud needs constant cooling. I didn't see anything about enclosure temperature so I left it at 40°.

The first print started great but broke off the bed. The Z height was off and I didn't get it fixed until the first layer was halfway done. This benchy is the second print using a default ASA profile, no tuning.

I feel like I've wasted my time with PETG. This material has been so much easier to print.

Edit: not sure why my image didn't upload. I'm new to Jerboa.

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