San Mateo Signals

This week I began constructing the double head San Mateo Signals. I really had a very tough time! One thing I noticed is how delicate the brass work really is! I made a complete mess of it. Luckly I ordered two and hope to improve on the second. And to make matters worse, one of the LED legs broke off so now I am down 1 bi colour LED :(

The instructions were very poorly written - even the grammer was not up to scratch - anyhow I called Bill and he explained a few things on the phone and sent me another diagram which explained things further.

Here are some photos:








As requested by Wayne, here is the schematic for the detection circuit and signal - all credit goes to John of course (and Rob Paisley http://home.cogeco.ca/~rpaisley4/CircuitIndex.html) as he created and helped me with these circuits.