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Thread: Emergency stop buttons.... on Amazon

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    Emergency stop buttons.... on Amazon

    I got my part from Corsair to replace my power switch on my case which is wearing. I've looked at the part and a few things come to mind. One, it'll be a pig to fit and two, it's a tiny micro switch that'll fail again in a few years time. This case is 6 years old and looks brand new. I'll have it probably another 10 if I live that long.

    So I looked at the wiring and decided I could just replace the switch just as easily, if not easier and started looking around. As you do, I looked on Amazon and found emergency stop buttons for heavy machinery.

    Not only do I love that you can buy life saving emergency equipment off Amazon, I love even more that they are available at less than a tenner and supposedly rated for 660V and 10A. These are often £40-80 for the main reason that thay have to be robust and fail safe. I've shattered the internals of an emergency stop switch before (adrenaline is a fun thing when someone is flying accross the room) and the thing still stayed off.

    I love even more that these are advertised with a picture of two blokes in the pit of a lift shaft. You're working on lift where the cables are worth a few grand due to all the safety / quality checks and you spend a tenner on a stop button from Amazon....

    Oh and one is pictured next to a CT scanner. Because your million quid CT scanner needs a ten quid emergency stop button for when you're all being irradiated.

    The reviews are better. There's a guy who has fitted one to a lathe for a PAYING CUSTOMER. He's apparently quite happy. It's all fun and games until somebody loses an organ.

    There's another review, two stars, stating "This is not an off switch". That being its only job, I dread to think what it would have had to do to get one star.

    So, I'm thinking a three switch wall mounted panel. Emergency stop to turn the PC on, green to play Greta's "how DARE you" and red for the March of the Soviet Union.

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by philehidiot View Post
    ....

    There's another review, two stars, stating "This is not an off switch". That being its only job, I dread to think what it would have had to do to get one star.

    ...
    Electrocute the button-pusher?

    It reminds me of a a joke about three buttons, including a big red one marked "ATR - men, do not push".

    But I'll get banned if I tell that one, then lynched by the PCTP (Political Correctness Thought Police).
    A lesson learned from PeterB about dignity in adversity, so Peter, In Memorium, "Onwards and Upwards".

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    Re: Emergency stop buttons.... on Amazon

    More seriously, I do actually have a big, red emergency "stop" button in my home office. Seriously. It isolates power to a couple of radio transmitters and anciliary equipment. And it was quite a bit more than a tenner.
    A lesson learned from PeterB about dignity in adversity, so Peter, In Memorium, "Onwards and Upwards".

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by philehidiot View Post
    There's another review, two stars, stating "This is not an off switch". That being its only job, I dread to think what it would have had to do to get one star.
    Given that oft-quoted law of the internet, i.e. that there is always an XKCD...


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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by philehidiot View Post
    t and two, it's a tiny micro switch that'll fail again in a few years time.
    How big do you expect a micro switch to be?

    At the risk of saying something relevant, I expect an emergency cutoff switch won't be rated for too many presses. I mean, how often do you expect to emergency shut down equipment? A micro-switch should be the right tool for the job. Perhaps you could base something around one of the push buttons used in arcade machines, the ones rated for a drunk person to hammer repeatedly on because auto fire would be too easy.

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by Saracen999 View Post
    It reminds me of a a joke about three buttons, including a big red one marked "ATR - men, do not push".
    I know the one!!

    Quote Originally Posted by philehidiot View Post
    One, it'll be a pig to fit and two, it's a tiny micro switch that'll fail again in a few years time.
    If you like, I have a contact at APEM Solutions, who make switches for Caterpillar, Aston Martin and most of the world's high end military contractors. Their buttons will not fail you!
    They'll happily supply you with something comparatively easy to fit (as far as switches go), will not be quite so micro and will definitely be well above any spec you require... It just might cost you a little more than a tenner, is all.

    Alternatively, the slap-stop switch on my bandsaw is basically just a hinged cover with a plunger that sits over the Off switch, and does the same job but then locks shut to keep it turned off. Probably only cost a fiver, but is industry standard.
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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by DanceswithUnix View Post
    How big do you expect a micro switch to be?
    ....
    I have loads of macro micro switches. I call them ... switches.


    I'll get my coat.
    A lesson learned from PeterB about dignity in adversity, so Peter, In Memorium, "Onwards and Upwards".

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    Re: Emergency stop buttons.... on Amazon

    I've ordered one. They look terrible. I'll wire it in and we'll see how long it lasts. I am finding it quite funny that people are complaining about the lack of a supplied wiring diagram. If you don't know what NO and NC mean with two connectors each, you should NOT be wiring in emergency equipment.

    I am also not going to test this to the rated 660V, 10A.

    I expect it will fail quite quickly. Amusingly they have a no quibble warranty.... because when your emergency stop button fails, getting your £9 back is top of your list of priorities.

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    Re: Emergency stop buttons.... on Amazon

    If it fails then perhaps you should go for an IR on/off setup:

    https://www.instructables.com/id/Uni...Switch-for-PC/

    which you can then control with a flourish of your wand shouting "Bootio" or some other incantation ...

    https://www.amazon.co.uk/Noble-Colle.../dp/B00FXMDRZK

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by DanceswithUnix View Post
    If it fails then perhaps you should go for an IR on/off setup:

    https://www.instructables.com/id/Uni...Switch-for-PC/

    which you can then control with a flourish of your wand shouting "Bootio" or some other incantation ...

    https://www.amazon.co.uk/Noble-Colle.../dp/B00FXMDRZK
    Hows about a PIR? Walk in the room and the PC turns on... just, um.... don't move. Becuase it'll turn off again.

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    Re: Emergency stop buttons.... on Amazon

    https://photos.app.goo.gl/HYK4v6k6nGBmaG2a6

    All done. It is wired in so I can use the existing on switch or the emergency stop button to turn it on and I've made a connector system which means I can just remove either easily without redoing it all.

    How utterly pointless that was but it kept me busy for an hour.

    Also, those emergency stop buttons are TERRIBLE. Fine as a toy for someone like me but the idea that people might use them as real emergency equipment for lifesaving stuff is horrendous.

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by philehidiot View Post
    Hows about a PIR? Walk in the room and the PC turns on... just, um.... don't move. Becuase it'll turn off again.
    Or have it on a timer like some lights, so if you don't move enough while using your PC it turns off
    Last edited by Xlucine; 19-07-2020 at 02:54 AM.

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by Xlucine View Post
    Or have it on a timer like some lights, so if you don't much enough while using your PC it turns off
    Ultimate security solution. User must "YMCA" at 4 minute 59 second intervals or lose AC.

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by philehidiot View Post
    Ultimate security solution. User must "YMCA" at 4 minute 59 second intervals or lose AC.
    I've worked in offices with lighting like that. Occasionally it would go dark, and people would stand up and wave their arms about til the lights came back on. Amusing the first time...

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    Re: Emergency stop buttons.... on Amazon

    Don't worry it's probably just people buying them for aesthetics on electronics projects and stuff.
    Quote Originally Posted by philehidiot View Post
    The reviews are better. There's a guy who has fitted one to a lathe for a PAYING CUSTOMER. He's apparently quite happy.
    Never mind...

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    Re: Emergency stop buttons.... on Amazon

    Quote Originally Posted by DanceswithUnix View Post
    ....

    which you can then control with a flourish of your wand shouting "Bootio" or some other incantation ...

    https://www.amazon.co.uk/Noble-Colle.../dp/B00FXMDRZK
    Got one of those here already. But it's cleverly disguised via an incognito incantation (try saying that 10 times, quickly, after a few pints) .... as an MS Surface Pro pen.
    A lesson learned from PeterB about dignity in adversity, so Peter, In Memorium, "Onwards and Upwards".

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