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I'm seeking a simple block occupancy detector to use with DCC. I don't want a complicated unit that reports to
computers etc. Just need a circuit that will detect a loco (or rolling stock equipped with lights or resistors) in a block section.
The final output should be a set of dry contacts that can be used to energise a relay.

 

[fliermike]

QUOTE (Edwin @ 5 Aug 2008, 16:34) <{POST_SNAPBACK}>The LDT unit will only operate via a feedback bus so isn't suitable for a simple visual indicator. Typically for MERG they have several kits that do much the same job. I think the simple ToTI was designed for DC but will work with DCC, it is probably easiest to hook up to an indicator light but needs some complicated power supply arrangement. There is also the DTC8 about which I know very little, I use the LDT units rather than either of the MERG ones.

Thanks Guys, looks like the DTC8 would work but there is very little info on the MERG board, I assume that I have to join to learn more.

I have designed my own simple 3 aspect signalling system using small relays. I just need an occupancy decoder that will energise a relay that
triggers the colour light signal for that block.

I am using Lenz decoders to take advantage of its automatic braking capability, I believe that these decoders will transpond their position but I assume that means using a computer to run the whole show.