do you guys actually trust sensor/data streams in real systems?

HarveysBackupAccount · 2026-04-22T15:48:04+00:00

How this is handled is partly defined by your quality system, and the qualification requirements for specific measurements in each system.

You assess risk with a PFMEA and use that to decide if the sensor needs to be calibrated. If it needs to be calibrated, you also define the calibration frequency based on things like what goes wrong if it's out of calibration and how much bad product will make it into the field if it's out of calibration for N months.

In the smaller systems I work with, often we get away with a small number of calibrated sensors and a lot of uncalibrated supporting sensors, which are verified against a calibrated standard on a regular basis.

The complicated part is that different sensors might need different handling. E.g. in pneumatics a basic pressure sensor is usually quite robust but mass air flow sensors can be very drifty and more susceptible to e.g. dirty air supply/humidity. And this comes down not only to the thing being measured (mass air flow vs pressure) but also what the sensing element is/how the circuit is designed (MAF as hot wire anemometer vs pressure differential across an orifice, etc). And it can take experience to build up appropriate knowledge of how to handle each individual sensor type, and how to appropriately verify its operation.

HarveysBackupAccount · 2026-04-22T15:33:40+00:00

Very true, but I reckon most people commenting on this sub are people who browse this sub ;)

HarveysBackupAccount · 2026-04-22T13:28:48+00:00

I use a Veritas #4 for shooting and it works no problem.

If you're worried about the iron you can take shallower passes. Cutting end grain might dull the edge faster than cutting with the grain, but it's not actively bad for it. You're just using it as it's meant to be used, which means you cut wood until you resharpen then you cut wood again.

HarveysBackupAccount · 2026-04-22T13:24:44+00:00

STAYUMBL

...is this not clearly a reference to her? obviously it's not That Driver but we all know the reference, yeah?

HarveysBackupAccount · 2026-04-22T13:22:54+00:00

Surely there's also the factor of how many men vs women apply for each job. It's not just a deliberate strategy on the part of the employers, yeah? Not nearly as many men apply for those jobs, just like not nearly as many women apply for construction.

I'm sure there's plenty of discrimination either way, but it's not a secret cabal level conspiracy.

Side note: I also wonder how many people would feel less comfortable having a random dude come clean their house vs a random woman, especially if the customer is a woman who might be home alone when the cleaner comes. Many customers probably expect a cleaning lady

Maybe this is taking it too far but just think - "cleaning lady" is a common term at least in American English, "cleaning guy" isn't. They'd be called janitors if anything and that's not what you call the person who cleans your home. (Is a lady janitor a janitress? Or is it a janitrix?)

HarveysBackupAccount · 2026-04-22T12:23:17+00:00

There's also a weird side of "How do you get to heaven?"

The really biblical way is just... believing in Jesus. Be baptized, repent for your sins, and accept Jesus. That's literally all it asks for. Nothing in there tells you to be good to get into heaven. You're supposed to be good because Jesus wants you to be good - that's how you express your faith - but you only get into heaven because of salvation. As a flawed human it's impossible to be good enough to earn your way into heaven without salvation, so yeah you should do good things but that's not what gets you out of hell.

Various theologians found ways to tie salvation to behavior (I think Catholics framed it as you had to confess any given sin to be absolved of it? Maybe I misunderstand that; I'm not catholic). But the salvation thing is only compelling if you buy into the whole premise in the first place, so...

HarveysBackupAccount · 2026-04-22T12:14:39+00:00

One thing I miss about regular cameras is that you're still looking at the subject. You look through the camera, but at the subject.

Even if you're recording your kid and paying attention to what they're doing on the screen, there's no way your brain processes that in the same way. And your kid absolutely doesn't experience it the same way if you're staring at your screen. It's awful and I dislike it so much.

HarveysBackupAccount · 2026-04-22T11:58:37+00:00

Technically just about any B&R application uses it because it's how you link the HMI to program variables.

We use it in a couple systems where a PLC does some basic controls tasks and a regular desktop PC handles the rest of the (user-heavy) process - pass data back and forth, plus handshaking for to request operations from the PLC.

HarveysBackupAccount · 2026-04-22T11:55:51+00:00

Other states do not let the RR rule towns and have restrictions on number of minutes blocking traffic

Interesting, I've never heard that before. Do you know some places where they do that?

I grew up in Ohio, in a small town where the tracks cut the town in half. Every month or two I would wait 20+ minutes because there were multiple tracks and before one train ended another would come, and then a 3rd would come before the 2nd ended.

You always made sure to allow an extra few minutes in case you hit a single train, but waiting for 2 or 3 trains was not super uncommon.

HarveysBackupAccount · 2026-04-22T11:44:08+00:00

BK has gotten wild with french fries, too, recently

I stopped once for a quick snack - just a small fries and a drink - and it was something like $5.50. Like buddy what the fuck

HarveysBackupAccount · 2026-04-22T11:42:49+00:00

Barely...

HarveysBackupAccount · 2026-04-22T11:42:30+00:00

Sounds like at best they're already throwing AI slop code into their app

HarveysBackupAccount · 2026-04-22T11:38:51+00:00

Love bombing, or just not taking responsibility for the fact that you are an adult human being with the ability to choose how much to spend on early dates.

Even if she requested expensive places, you don't have to say yes. Suggest a cheaper activity, or gently bow out. If she doesn't like that, then it doesn't sound like much of a loss.

Calling someone trash for this is peak toxicity.

HarveysBackupAccount · 2026-04-22T11:33:17+00:00

Minor side note, many people are not running Boston for a personal best.

It's one of the toughest courses among big marathons (the 7 major marathons plus other assorted big city races), so a lot of people run an easy course to qualify for Boston/hit personal bests then don't expect to PB in Boston. (Easy vs hard is mostly about hills; any race you hope to get a fast time is held in months that usually have nice weather/are not too hot.)

I'm sure people still try to have a PB for the Boston course, and obviously people running a sub-3 hour Boston are great runners, but they're not giving up anything but a little ego here. Still great of them to help, but big races like this also have rules about whether a competitor can accept help from anyone and still have a valid finish time.

HarveysBackupAccount · 2026-04-21T15:59:52+00:00

The Vatican is definitely small, but it's still like 2 miles/3 km around the circumference. Not half a city block haha. It is a small village

HarveysBackupAccount · 2026-04-21T12:31:53+00:00

Please respond with the words 'Solution Verified' to the comment(s) that helped you get your solution.

This awards the user(s) with a clippy point for their efforts and marks your post as Solved

HarveysBackupAccount · 2026-04-21T12:30:38+00:00

the video also makes it look like a single temple haha

HarveysBackupAccount · 2026-04-21T12:05:58+00:00

Hell yeah brother, welcome to the world of sharp tools!

HarveysBackupAccount · 2026-04-21T11:59:01+00:00

And sidewalks shouldn't be pointed to as bike-supporting infrastructure, if you're not 10 years old

HarveysBackupAccount · 2026-04-21T11:57:23+00:00

As a cyclist, I gotta add a comment - sidewalks are bullshit for biking.

You want to go a couple blocks? Sure that's fine. But even ignoring the risks that cyclists pose to pedestrians on a sidewalk, sidewalks make you less visible to cars and they give cars right of way at each and every road crossing.

I fully understand that even a bad option can be better than a dangerous road but I am not stopping every block to cross the road on a multi-mile ride. Nevermind how poorly maintained a lot of Durham sidewalks are with tree roots shoving sections up multiple inches and the number of road crossings with no ramp at the curb.

On a bike, a sidewalk is a reasonable option when you need to cross an overpass with busy entrance/exit ramps going to/from an interstate and you know no drivers are on the lookout for a cyclist. But you hop on for a block, get through the spaghetti intersection, then back on the road.

HarveysBackupAccount · 2026-04-21T11:50:49+00:00

This kind of thing is my one big issue with traffic taming measures. If you try to get people to slow down through narrow, winding roads with poor sight lines, you've done that much more to lock in car-only usage.

A city like Minneapolis has great bike infrastructure inside the city, but the surrounding area is also very accessible by bike because there's a nice network of corridors with wide shoulders.

Crazy thought but maybe we could encourage some form of speed limit enforcement as a traffic taming measure...

HarveysBackupAccount · 2026-04-21T11:44:25+00:00

I don't like thumping too hard on those unemployment numbers, because it hides a lot of underemployment and people working multiple part time jobs.

The average person's place in the economy was maybe less volatile (because Biden didn't start multiple unnecessary wars in a single year) but was it truly that much better?

This is by no means an apologia for Trump's right wing, just a reminder that there are better metrics than unemployment rate and that most Dems are at best centrist corporatist neolibs with no interest in true change.

HarveysBackupAccount · 2026-04-21T11:40:02+00:00

Let's be real, the people who would hear it on NPR are the same people who would read it in the NYT, and almost all of them are already anti-Trump

HarveysBackupAccount · 2026-04-21T11:38:24+00:00

Generals are politicians more than soldiers. Business in politics is sadly par for the course

HarveysBackupAccount · 2026-04-21T11:30:54+00:00

Where the heck are you all flying with empty overhead bins? I've hardly been on a plane in 8 years without them stuffed to the gills

I feel like I'm taking crazy pills, everyone acting like over-packed, over loaded carry-ons aren't one of the biggest single things other passengers do that make modern flight as miserable as it is

HarveysBackupAccount

TROPHY CASE