 | | Re: LEGO Electro-magnet —Joe Comeau
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| | | I have been thinking about this very thing recently. It's actually pretty simply. For the simplest version, all you need is a nail or screw (preferably with a lot of soft iron in it, otherwise it will tend to stay magnetized to some extent once the (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | RE: LEGO Electro-magnet —James Matthews
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| | | | Thanks it worked! I had some magnetic wire from a Stiquito set I just built, to I managed to get a simple one working, but I couldn't connect it to the RCX for some reason. I'd attach it to one of the LEGO wires (do the order of the connectors (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | | Re: LEGO Electro-magnet —Philip Taylor
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| | | | James Matthews <lego-robotics@crynwr.com> wrote in message news:MABBKIIIBOMODJG...net.com... (...) built, (...) of (...) the (...) I had the same battery warning when connecting some large non-Lego motors to my RCX, and I'm fairly sure the reason (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | | Re: LEGO Electro-magnet —Rainer Balzerowski
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| | | | Hi all, there is another thing you should think about. When using an electo-magnet, you use a coil. This coil stores energie, so if you switch it off, the coil gives this energy free. (This is the energy your ignition-sparks gets from an ignition (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | | Re: LEGO Electro-magnet —Philip Taylor
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| | | | Rainer Balzerowski <balze2@gmx.net> wrote in message news:GBuG0y.EAv@lugnet.com... (...) electo-magnet, you (...) gives (...) diode (...) (Or use (...) hammer (...) Because motors also contain electromagnets, I imagine they would have the same (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | | Re: LEGO Electro-magnet —Rainer Balzerowski
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| | | | Hi Philip, may be, but I would chose the safe side (We did with our 6.270 board and used 2 diodes, who cares about 2 diodes). BTW I'm not sure what happens with the energy in an electro motor. I can imagine that this energy (resulting in a magnetic (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | | Re: LEGO Electro-magnet —Philip Taylor
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| | | | Rainer Balzerowski <balze2@gmx.net> wrote in message news:GBuGyD.Fzn@lugnet.com... (...) used 2 (...) the (...) electro (...) I've found a book which mentions this, and talks about using 'flyback diodes' when "switching inductive loads such as (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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| | | | | | Re: LEGO Electro-magnet —Rainer Balzerowski
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| | | | Well, good work Philip. Good to be sure about this. I was only afraid that you'll frie your RCX, because of not knowing this effect. Regards, Rainer P.S.: Learned something, not unload diode, but flyback diode ! ;-) (...) (24 years ago, 15-Apr-01, to lugnet.robotics)
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