This was my first time using unofficial LEGO lighting. During the last convention I went to I was very impressed by what others were able to do with these lighting solutions, so I decided to implement it into my nano city. The train runs on a chain using the new Link Chain with Bar piece introduced with the LEGO PAC-MAN set.

The main focus of the city was to give each building a different style, many of which were loosely based off of LEGO City sets. All the lights are controlled by the LEGO move hub, using converter cables. The building lights all run off one port, while the crossing lights run off the other. Another thing I really wanted to do with this build was track the location of the train, so it could trigger the crossing lights at the correct time, and stop the train in the station.

Initially I had tried to automate this by tracking the amount of load the motor was experiencing to determine the position of the train, however this only worked about 20% of the time. In the end though I went with calibrating it manually at the start of the program, and then the software knows when to trigger the signal and stop the train.

Development: