Julian
I would like to switch on / off a section of track on each approach to the Heels of Points, when they are set to the opposite direction.  That might have been very simple, using micro-switches adjacent to the servo arms, driving the points, when they change the route.  Indeed for the sidings, that may possibly be the case, as the points and siding are adjacent and importantly, on the same bit of Baseboard.

Where the running lines are concerned, however, the switched rail will be on the next board and I have no wish to have to connect 6 sets of plug / sockets each time the layout is stored or assembled.  I know that is, in part at least, lazy, but I also dislike the many "Heath Robinson" dangly electric cobwebs I see on layouts at exhibitions and much prefer a neat, thought out, solution.  The 5 individual baseboards are outlined with red rectangles on the picture below.  The on / off rail sections are coloured red and are set to protect the Heels of trains running along in conventional manner {ie. on the left hand line}.  The, single line, Branch to the lowest platform {fat right} can be seen to have one for each direction.  They are set a distance away from the points so that pushed trains will be prevented from derailing wagons or coaches, before the loco looses power.

Now for something completely different Heel Protection.jpg
  The solution which springs to mind, would be to run one of the droppers, for each of the switched lines, through a simple "on / off" DCC decoder, or a DCC decoder which switches polarity through 3 outputs and leave one unconnected.  Such a decoder, addressed to match the points being approached, would switch on and off at the same instruction as the points being set.  Six required, 2 for the board on the left and 4 on the board on the right.  My simple problem is to identify reliable DCC decoders, which will carry a minimum of 18-20v at up to1.5 amp output and either simply switch on / off, or have 3 outputs, which switch polarity.  The manufacturers of these items are rather keen to advertise the massive variety of their uses, with phantasmagorical names, that it is proving frustrating to get to the simple information outlined in blue above {It's in blue, because that's frequently the colour of the air when trying to elucidate that simple information}.  Does anyone have any recommendations for 6 DCC decoders which will match the requirements in blue, please?

Regards and thank you for reading.
Julian

P.S. I know that I can avoid all the bother of fitting protection by simply driving carefully, however, there is a younger person in the house, whose friends wouldn't be adverse to a little run around, so some protection may be a good idea.  That may result in an additional decoder being fitted and the sidings switched from the servos.

Quote 0 0
Ron Solly Sol
At first read, you may need to consider using the new  DccConcepts REX units in conjunction with Decoders - described in the Part 2 of
https://dccconcepts.us13.list-manage.com/track/click?u=9687385558a1289cf97083ac7&id=cfa43edb4e&e=e282de6c7d
Ron
Quote 1 0
AHJAY
Yep.... As specifically shown in the newsletter (sent out Yesterday)
One REX will independently handle two sections at least, Answer is an AD1 decoder + REX as the switching unit.

Ahjay
Quote 1 0
Julian
Thanks Ahjay and Ron, I will read it up.

J
Quote 0 0