I'm trying to update some of the electronics on my club layout. We have several large yards that use diode matrices along with Tractronics Switchlock boards to control the Tortoise machines. Unfortunately, Tractronics is no longer in business. Is there another product out there that performs the same function? There seem to be a few products out there for controlling Tortoise machines, but they seem designed around computer/DCC control. I need something that will throw the Tortoise based on two momentary contact button inputs, when either input is grounded, the Tortoise will go in one direction. I think Circuitron makes something for that, but it's ~$25 per Tortoise! Is there anything cheaper? Does anybody even do a diode matrix anymore for yard ladders? Jim
looks simple enough to build if this is it....... http://davidksmith.com/modeling/articles/article-4.htm
