Please stay isolated. Things won't get back to normal until we have beaten the virus and the only way to do that, is to prevent it from spreading.


k83 tester

Since I have now built a pile of k83 modules (actually Viessmann 5211) I need to test them. Each one has 12 outputs to be tested, I decided that a small plug-in module was in order.

The module tests three plugs at a time, allowing all four output pairs to be tested in turn.  I took a piece of plywood, screwed three Märklin plugs into it and connected them up to two LEDs and a 1.5K Ohm resistor.

This allows me to insert the tester into a k83 and when the ports are activated the red and green LEDs flash accordingly providing a clear indication that the module and address selection etc. is working!

Update 2017

This little tester has proven to be invaluable over the years, and I sometimes still use it 10 years later if I need to determine if some accessory has a wiring problem or if the k83 type module has a problem.

I also have k83/k84 testing capabilities through the main program and my browser on my phone