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  • RussellRohde commented on badarsworkshop's instructable Automatic Gate Slider Under $10020 hours ago
    Automatic Gate Slider Under $100

    G'day fella. nice build. I personally like seeing the motor and gears out on display. I do understand what turbotricycle and MikeS790 are saying but I'm in New Zealand so cant speak to regulations in other countries."...one of the limit switch wires broke off and the gate rolled into the switch."One thing I would recommend you look into is about how you wire up 'stops' (limit switches). The contact used in any 'stop' should be Normally Closed. This would have prevented your problem where the limit switch wire was broken and the gate ran into the limit and smashed it. Using Normally Closed for stops means the circuit has to be complete before the motor can even start. So... If the circuit is open due to a broken wire, the gate would never have run in the first place meaning it ...

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    G'day fella. nice build. I personally like seeing the motor and gears out on display. I do understand what turbotricycle and MikeS790 are saying but I'm in New Zealand so cant speak to regulations in other countries."...one of the limit switch wires broke off and the gate rolled into the switch."One thing I would recommend you look into is about how you wire up 'stops' (limit switches). The contact used in any 'stop' should be Normally Closed. This would have prevented your problem where the limit switch wire was broken and the gate ran into the limit and smashed it. Using Normally Closed for stops means the circuit has to be complete before the motor can even start. So... If the circuit is open due to a broken wire, the gate would never have run in the first place meaning it could never have crashed. It is also a very good safety measure - before the motor can run, the design of the stop circuits proves there is a continuous circuit that, if opened anywhere along the electric path, will make the load turn off.Using Normally open means that any open circuit fault (like you had) will let the motor start and will prevent the limit/stops from sending a signal to the load controller to stop it.All that aside, I really do like the chain hanging there etc. I've recently had the driveway added to the land my wife and I are building a home on. I think this will be a big part of how I get the gate to function (when I've built it). I will try to source a motor with an integral brake though (commercial/industrial roller door motor maybe).

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  • Mesmer-eyes: Rainbow Vortex Slider

    Same thing went straight into my head. I have the arduinos, steppers, drivers, 2x2 and 4x4 WS2812B sitting around. It is school holidays now so I think the lego technic will be coming out and I'll do a proof of concept with the kids (or without the kids)

    G'day fella. That looks cool AF. Does it project or do you need to look directly at the CDs? In the build vid it looks like it projects but in the festival video it looks more like everyone is staring straight down the barrel of it.

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  • RussellRohde commented on RussellRohde's instructable Magic Drill Chuck4 months ago
    Magic Drill Chuck

    After several years now, I can say that above all other workshop hacks, this is by far the best in my small space. Thanks for everyone's comments!It has extended to my table saw /router table for holding the spanners for removing the saw blade and router bits. Magnets hold my rulers and other flat tools too against the end of my workbench.

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