I’m intending to use the Java Model Railway Interface (JMRI) to automate Kay Hernan. JMRI is a fantastic bit of software written by enthusiasts for the purpose controlling and or automating model railways. It can operate with may different types of hardware and DCC systems and runs on almost any computer that can run fairly normal version of the Java languge.
The main “problem” with JMRI as far as automation is concerned is the apparent lack of clear documentation … well as far as I’ve been able to find. I have used my normal technique of trial and error to investigate how to proceed. Today I cracked a major problem I had. I had managed to get JMRI to detect the state of track circuit detectors and even display their status on a track diagram. Getting JMRI to operate points (turnouts in JMRI) was another matter especially when it came to operating them from a script. This problem is no more.
I now have points operating as and when required as well as locomotives moving under script control dependant on track circuit conditions.
Next… some more ambitious test scripts.
Getting some track laid
I have at last started to get the track laid at Kay Hernan. The first full length if from the main line entry at the River Hernan bridge to the quay end. There is more than can be seen from the top as each point is operated by a servo controlled from a MERG CANSERVO8 module and each point and track section is powered via MERG DCCTOTI8/CANTOTI track occupancy modules. I plan to automate things at a later date and am installing all the required units now.
Here is a video of the first test run…
Fish and chips anyone?
Years ago I purchased a small illuminated fish and chip shop sign. I think it was intended for an 0 gauge layout I was trying to build at the time but I never finished the layout and the sign was never used.
Kay Hernan will have a fish and chip shop and so the sign will, at long last, be displayed in the shop window.
Here is a short video of the sign in action…
Installing servos
I’m using servos to operate the points on the Kay Hernan layout as they show a more realistic slow movement and they are easily controlled though the CBUS. I’m using the MERG 3D printed servo mounts but have found a problem with them; the slot that the piano wire passes through is a bit too large and thus the point throw is a bit sloppy, I have had to drill a 0.9mm hole just under the slot to take the operating wire. This seems to have done the trick and the points seem to be working correctly.
So far I have two of the points servos fitted. One of them has the micro switches fitted and awaiting connection to the track supply and the point frog.
Basic layout
I want to build a simple layout to help me learn about the installation and operation of MERG CBUS and possibly JMRI automation. I shall be using the Lenz DCC system for engine control.
The layout will be based on 2′ by 4′ MDF boards and 2″ x 1″ timber.