Originally Posted by ogaugeguy:
Stan, will this work with the led system developed by gunrunnerjohn?
Perhaps I was too subtle! That is GRJ's LED board in the photos.
As you note, GRJ did the heavy lifting to create a simple-to-install system. This magnetic switching stuff is not at that level as there are, at this point anyway, a variety of your-mileage-may-vary factors that make me uncomfortable specifying a one-size-fits-all parts list. However, the circuit connection is straightforward:
So as can be seen in the photos, the Hall switch chip and resistor "circuit" make a simple 2-wire attachment to LED strip. Details to follow.
Originally Posted by gunrunnerjohn:
Very cool Stan, there must be a way to work those sensors into something, what's the part number of the one you're using.
The resistor is 470. I just grabbed a bipolar Hall device from the spare parts stash and of course when I went to DigiKey, I see they are obsolete (Panasonic DN8899 bipolar Hall switch). I used this in a circuit last century. Anyway, a suitable replacement from DigiKey is 88 cents: http://www.digikey.com/product...61-PG-BDI-ND/2182541
If there's sufficient interest in messing with this Hall stuff, perhaps we should start a thread in Electrical as the design details can get a bit tedious which is not at all in the spirit of your easy-to-use, plug-and-play LED board! So I'm a bit at a loss on how to approach this. Ideas anyone?
Originally Posted by CincinnatiWestern:
... With that noted I assume this set-up would not be effected by aluminum body cars?
A Gall switch/sensor's or even a reed switch's sensitivity can be affected by nearby steel plates (like our passenger/baggage car chassis) but aluminum should be no problem. And here's a video sequel with 1/32" sheet aluminum simulating your question: