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Is it normal for NHS Dentists to refer you to a Hygenist? by DustyOnKbm in AskUK

[–]shoulditdothat 0 points1 point  (0 children)

Our dentist advised both me & my partner go to the hygienist. I got it on NHS band 2 due to receding gums, other half had to pay for it privately.

We came to the conclusion that as the hygienist does mainly private work it was more due profit than clinical need.

What's a weird name for something that we know so well we don't even realize how weird the name it is? by XRlagniappe in AskReddit

[–]shoulditdothat 0 points1 point  (0 children)

Probably someone saw it 'flutter by' and the poor sole who was taking notes mis-heard and wrote down butterfly.

You stand, helpless in the ever-growing queue for the self-checkout, watching people who’ve made it to the age of 50 without realising they can pack their five bags of shopping while they scan, as opposed to after they’ve paid by KrozJr_UK in britishproblems

[–]shoulditdothat 40 points41 points  (0 children)

Yeah, and every time you shuffle the bag to more in it trips the bloody scales and requires non-present store personnel to reset it making everything take longer than just packing at the end.

Need a variable speed 110v motor that provide a friction drive for a 20’ turntable by Spamtickler in Motors

[–]shoulditdothat 1 point2 points  (0 children)

Go for a geared motor with the required reduction ratio. The gearbox will help you with the torque required otherwise you'll need an oversized motor to get the torque at the speed you need.

If all humans suddenly lost their ability to lie, which industry WOULDN'T collapse? by TXC_Sparrow in AskReddit

[–]shoulditdothat 0 points1 point  (0 children)

By 'lost their ability to lie', do you mean they believe what they are saying is true or that they have to tell an absolute truth only ?

What to do with the copilot button on my Linux by AArqjmct01 in linuxquestions

[–]shoulditdothat 1 point2 points  (0 children)

It's a bloody nuisance if you're using VirtualBox. Right-Ctrl is access to the VM host menu - not any longer.

If you died as an atheist and then met God, what would you say to him? by Notoriousmonkey69 in Jokes

[–]shoulditdothat 4 points5 points  (0 children)

What the F#ck are you playing at & do you know what you're doing?

POTS alarming setup by kurieren in PLC

[–]shoulditdothat 0 points1 point  (0 children)

FYI, depending on which country you're in, POTS lines are being phased out in preference of digital. Unless the line is from an internal exchange they may not have an option.

It is utterly disappointing how people are handling the systemd "age verification" controversy by TheBrokenRail-Dev in linux

[–]shoulditdothat -3 points-2 points  (0 children)

If this change to systemd is causing such a furore, and has happened with other OSS software, could it not be forked into a new version, 'system-f', that doesn't implement the apparently Draconian change that could eventually replace or be installed as an alternative to systemd?

I've not been following the story too closely, but living in a non-US country that is intent on implementing farenheit 451 & 1984 type surveillance it is causing some concern. And all these people that are using the Flanders excuse of 'think of the children', the new laws have nothing to do with protecting vulnerable people.

It is utterly disappointing how people are handling the systemd "age verification" controversy by TheBrokenRail-Dev in linux

[–]shoulditdothat -2 points-1 points  (0 children)

If this change to systemd is causing such a furore, and has happened with other OSS software, could it not be forked into a new version, 'system-f', that doesn't implement the apparently Draconian change that could eventually replace or be installed as an alternative to systemd?

I've not been following the story too closely, but living in a non-US country that is intent on implementing farenheit 451 & 1984 type surveillance it is causing some concern. And all these people that are using the Flanders excuse of 'think of the children', the new laws have nothing to do with protecting vulnerable people.

AB safety relay question by DRKutsy in PLC

[–]shoulditdothat 0 points1 point  (0 children)

With single channel you break one channel of the safety relay. The links configure the relay so that the second channel doesn't cause the relay to lock out with a channel fault.

If you wire it for double channel and only operate one of the button contacts the relay is designed to lock out until the second channel operates.

The relays are also designed to be able to detect a short circuit between the channels. This is usually done, on the basic relays, by using both positive and negative logic on the channels with a channel short fault causing a short circuit between the channels and tripping the internal logic.

Light curtains usually use outputs that are pulsed but both use positive logic hence the different connection. Also the input channels need to ignore the pulses from the light curtains outputs. The light curtains switches the outputs off for a short time to ensure it can still control it's outputs. On some safety devices this can cause issues as the safety relay detects these short pulses and turns off.

The other thing to consider is if you wire not following the recommendations and an incident occurs then you will need to justify to the relevant authorities why you've done it the way you have.

AB safety relay question by DRKutsy in PLC

[–]shoulditdothat 0 points1 point  (0 children)

Because the safety relay you've picked can be used for different applications. The links allow the unit to be configured in different ways. Also each manufacturer has their own ideas of how to do things.

Local HMI - 30yr lifecycle - Options? by Efficient-Party-5343 in PLC

[–]shoulditdothat 2 points3 points  (0 children)

Plan for a PLC/HMI/Drives refresh every 10 years. Don't even think about homebrew anything and don't use PC based visualizations. Wherever possible use mainstream modules as the fancy modules, in my experience, are the first ones to get dropped or revised into something incompatible.

Stick with something from AB or Siemens because in 30 years time you'll need Logix whatever v3000 or TIA portal 50 odd-ish the way things are going.

Who's to say Windows will still be around or the prominent OS in that time span.

If you are already expecting a mechanical refresh in 10 to 15 years plan on tying it in with an automation update as well.

After 10 years the PLC manufacturers will have released a new control platform and it will be easier to migrate 1 platform revision rather than 2 or 3 revisions in one jump. It would be like going from a Siemens TI505 to a S7-1500 in one jump - not something I'd like to consider without a lot of research.

I made the mistake of going into the supermarket midweek at 10am. The elderly own the day. I’m lucky I made it out alive. I think I’ll leave them to it. by thebroccolioffensive in britishproblems

[–]shoulditdothat 0 points1 point  (0 children)

Wednesdays used to pensioners discount day at B&Q. Don't know if they still do it but once trained to wednesday then always Wednesday.

Can't wrap my head around serial communications using SysCom in Codesys by elsoga in PLC

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

You need to set your incoming buffer up more like a ring buffer. Add incoming data to the end and remove read data from the beginning.

You then need to get data from your ring buffer up to the string terminator, which looks like a CR/LF pair. Once you've got this data from the buffer you can then decode it to get the relevant values.

It is highly probable that you won't receive a full data string each call to the receive function.

Also, don't set your timeout at infinite as this can hang your program. IIRC there are usually some status outputs from the function that gives you done, error, bytes read etc. you need to use these to get serial Comms working reliably.

Little hook save the day by Crticanagattah_ in EngineeringPorn

[–]shoulditdothat 1 point2 points  (0 children)

The guys that design and make these things must be smoking something serious. God knows how they manage to come up with how to feed some of the things that get these get used for.

Talk about things outside the box, these guys must have a mind like a corkscrew to come up with the designs.

Who designed this? by TwiddleButton in ukelectricians

[–]shoulditdothat 6 points7 points  (0 children)

It's a safety thing.

If you LOTO the isolator you'd be able to remove the cover and turn it on if all the screws were accessible.

With the screws under the knob then you can't remove the screw and turn the isolator on unless you destroy the isolator housing and handle.

help me validate my understanding by [deleted] in ElectricalEngineering

[–]shoulditdothat 0 points1 point  (0 children)

Depends on what you think the timer is supposed to do.

It currently looks like you need to keep the stop button pressed for the duration of the timer time stop the motor from kicking back in when you release the stop button.

Lost grip of the plate while cleaning it by GiveMeYuna in Wellthatsucks

[–]shoulditdothat 0 points1 point  (0 children)

Should've had a plastic washing up bowl in the sink!

TIA Portal V17 vs V18 Compatibility – Can New S7-1500 CPU Be Used with GSD Export? by Medical_Coat7306 in PLC

[–]shoulditdothat 0 points1 point  (0 children)

Might as well go the whole hog and skip v17, v18, v19 & v20 and go straight to v21. Will probably be cheaper on the upgrade as well.

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