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Have you ever hurt yourself from your own code?

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Re: Have you ever hurt yourself from your own code?

#351

Post by confidantlake »

CoastalCoder wrote: post #339
akiselev wrote: post #288

Earlier quoted context omitted.

Another awesome safety system is the SawStop which uses the conductivity of skin to monitor for contact against the blade in a tablesaw. If it detects contact a small explosive charge goes off, instantly sending a block of aluminum into the path of the blade, stopping it dead. Even a serious accident like leaning with an elbow against a moving blade is likely to result in little more than the scratch from hitting a s…

One thing I'm still unsure of regarding table saws: is there really much risk of injury if you follow all of the typically recommended safety practices? Every tablesaw injury I remember hearing about involved the operator failing to follow some of those guidelines.

If you do everything right there is not much risk. But I have never met a human who does everything right 100% of the time.

Re: Have you ever hurt yourself from your own code?

#352

Post by ffffwe3rq352y3 »

mleonhard wrote: post #345

Apple Airpods Pro protect users from over-loudness. iPhone has an option to enable this protection for all headsets, but it doesn't work properly. For example, when answering a FaceTime Audio call with Bose SoundSport, the "call connected" tone often plays at max volume and is staticky. This is with the latest firmware and iOS. macOS has no over-loudness protection. Bose's expensive noise-cancelling headphones do com…

I don't understand why this isn't a common thing everywhere??? I'm not a headphone designer but the "loudness protection" seems like it would be trivial to add! For some reason that idea never occurred to me but its a good one.

Re: Have you ever hurt yourself from your own code?

#353

Post by johnchristopher »

atatatat wrote: post #347
johnchristopher wrote: post #200

Earlier quoted context omitted.

Oh, I have to introduce you to some of our finest subway sandwiches prepared by students that have no clue how to make sandwiches that don't spill all their innards as soon as they leave their hands.

Why not choose a sub shop that serves other foodstuffs besides turkey and soy disguised as a bunch of other shit?

What does that have to do with mayonnaise ?

Anyway, try out a Point Chaud. Same overflowing sandwiches.

I once bought one, I walked out the shop and 45 meters later the sandwich literally went through the paper bag and fell down on the ground.

Re: Have you ever hurt yourself from your own code?

#354

Post by barrkel »

TheSpiceIsLife wrote: post #305
namibj wrote: post #202

Earlier quoted context omitted.

I think parent was referring to taking wheels off, not torquing the nuts. And for that purpose, it does seem appropriate.

On second reading I see you may be right. However my point still stands, somewhat: if 300Nm is insufficient to undo your wheelnuts, they're way too tight.

You should be introduced to Italian single-sided-swingarm nuts. For example, my MV Agusta Brutale required 220 to 240Nm tightening. It would come loose with my battery-powered 300NM rattle gun, but only after a while. (Fantastic bike but I no longer own it. I'd rent another though.)

Ducati single-sided swingarm nuts can be similar, but I have not yet owned a Ducati.

Re: Have you ever hurt yourself from your own code?

#355

Post by barrkel »

TheSpiceIsLife wrote: post #184
barrkel wrote: post #158

Earlier quoted context omitted.

An impact driver (rattle gun) is much better for speeding up disassembly than a drill. They also don't apply anything like the same feeling of torque to the operator's wrist. A lower power (e.g. 300Nm max) battery driver is great for when you have to undo lots of lower sized bolts, while it would be a little bit underpowered for wheel nuts or motorcycle fork retaining bolts.

Dear Lord please do not put 300Nm on your wheel nuts. They're supposed to tentioned correctly with a torque wrench, usually between about 110 and 120Nm. Edit to add a reference, just random from a search: https://www.barum-tyres.com/car/expert-advice/safety-driving...

To be absolutely clear I'm talking about disassembly. I'd never use a rattle gun to tighten anything.

Re: Have you ever hurt yourself from your own code?

#356

Post by ta988 »

monocasa wrote: post #290
isatty wrote: post #35

Earlier quoted context omitted.

I used to do robotics, I can tell you that the fact that it was the cheapest or the most hacky does not matter in the least. Everything can and will go wrong, even the priciest and well documented part. I used to have multiple clamps around the controller, message bus, the firmware and also a physical barrier, and yet would not feel safe with my fingers or person around moving parts.

Used to work in robotics. The QA folk were obviously very much sticklers for the full process of enabling the hardware interlocks before getting near the moving bits. One time a manager got mad at them for taking so long going through the full interlock process while repeating a failure mode. He therefore went up to the machine saying "look, it failed so it's stopped, that's how the code works!" At that point our bet…

I worked for a car company. We had robots for mounting parts. Big robotic arm several tons of pressure possible. I was part of the maintenance team, we get an alert for a robot malfunctionning. Coming in the area we see screwdrivers cleverly placed in all the safeties. And a guy trying to tweak the robot that was slowly moving...

Re: Have you ever hurt yourself from your own code?

#357

Post by ta988 »

sharedfrog wrote: post #349
ArchOversight wrote: post #294

Earlier quoted context omitted.

The biggest problem with the saw stop is that wood when it is even slightly moist can set it off. So on a worksite if you are using lumber that hasn't had adequate time to dry the saw stop would trip even without any limbs being in danger. Each time it would destroy itself, you would have to take the saw apart and change it which would cause a work stoppage. What irks me the most is that the SawStop owner tried to cr…

> The biggest problem with the saw stop is that wood when it is even slightly moist can set it off. Is there any proof of this? From my understanding, that's a myth. Demonstrated here at about 3:00 https://www.youtube.com/watch?v=NV6Jhw0hhBI

It is true, laser cut wood and burnt wood in general also sets it off. However on all saw stop saws I've used you can disable the safety when you have to cut those materials.

Re: Have you ever hurt yourself from your own code?

#358

Post by ta988 »

akiselev wrote: post #301
ArchOversight wrote: post #294

Earlier quoted context omitted.

The biggest problem with the saw stop is that wood when it is even slightly moist can set it off. So on a worksite if you are using lumber that hasn't had adequate time to dry the saw stop would trip even without any limbs being in danger. Each time it would destroy itself, you would have to take the saw apart and change it which would cause a work stoppage. What irks me the most is that the SawStop owner tried to cr…

Do you know what moisture level sets it off? I didn't even think about that - it's easy to take Southern California's weather for granted. Here it's either pretty much ready from the lumberyard or you got it right off the mill's truck so it has to sit for a few days/weeks. The lobbying is off putting, yes, but at least his greedy self-interest would do some actual good instead of extracting evermore capital from ever…

It is not all moist wood. It depends on the specie, type of cuts, etc. Thats capacitive sensing so it depends on a lot of parameters.

Re: Have you ever hurt yourself from your own code?

#359

Post by ta988 »

ArchOversight wrote: post #307
akiselev wrote: post #301

Earlier quoted context omitted.

Do you know what moisture level sets it off? I didn't even think about that - it's easy to take Southern California's weather for granted. Here it's either pretty much ready from the lumberyard or you got it right off the mill's truck so it has to sit for a few days/weeks. The lobbying is off putting, yes, but at least his greedy self-interest would do some actual good instead of extracting evermore capital from ever…

I have no idea on the moisture levels that cause it to be set off, I just remember reading/watching a video about it because at first it seemed like technology that SHOULD be widely used and implemented. When I first learned about it I thought it was a great idea.

I've seen it save a hand. I also noticed quite a few triggers, but it saved a hand so that was worth it.

Re: Have you ever hurt yourself from your own code?

#360

Post by ta988 »

CoastalCoder wrote: post #339
akiselev wrote: post #288

Earlier quoted context omitted.

Another awesome safety system is the SawStop which uses the conductivity of skin to monitor for contact against the blade in a tablesaw. If it detects contact a small explosive charge goes off, instantly sending a block of aluminum into the path of the blade, stopping it dead. Even a serious accident like leaning with an elbow against a moving blade is likely to result in little more than the scratch from hitting a s…

One thing I'm still unsure of regarding table saws: is there really much risk of injury if you follow all of the typically recommended safety practices? Every tablesaw injury I remember hearing about involved the operator failing to follow some of those guidelines.

You can't avoid rare events like a wood piece breaking and things like that. I'm much more worried of angle grinder for example.
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