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(...) I've got a better idea. Raise a length of track by a single plate, then leave two pieces completely unsupported. Just to one side of the join of these two, mount a microswitch under the track, or mount a Mindstorms touch switch vertically on (...) (24 years ago, 31-Mar-01, to lugnet.trains)
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| | Re: Magnetic field activated switch
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(...) Is it possible that the magnetic field generated from flux in the track current caused by the running train might trigger some false detections ? In lugnet.trains, Jason J. Railton writes: (...) I've been thinking of making a pneumatic weight (...) (24 years ago, 31-Mar-01, to lugnet.trains)
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| | Re: Magnetic field activated switch
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(...) Exactly what part of a _plastic_ train are we hoping to detect here anyway? Are these things sensitive enough to detect the wheels and sparse metallic components of a train motor, encased in ABS, as it goes past? Jason J Railton (24 years ago, 1-Apr-01, to lugnet.trains)
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| | Re: Magnetic field activated switch
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Jason J. Railton wrote in message ... (...) How about the magnetic coupler on the front of the loco and between the wagons. I have found that the coupler going past has enough strength to attract a magnet under the track. Allan J Smith (24 years ago, 1-Apr-01, to lugnet.trains)
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| | Re: Magnetic field activated switch
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(...) Good point! So, a simple reed switch on the sleeper should do the trick. The other thought I had was to isolate a short (30mm) section of one side of the track, and bridge over it with a wire to power up both sides. This isn't long enough a (...) (24 years ago, 2-Apr-01, to lugnet.trains)
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