Almighty Central Station

This is the first project that started with an LDD design. And that also explains the size of the station: while building in LDD, it became bigger and bigger because I added new features all the time. The LDD design is a 90% version: some things are better to develop with physical bricks, like the motor/gears for the elevators. Key features:

– Total part count: over 25.000
– Size main building:
– Total weight: 35kg (estimation)
– More than 100 LED’s for lighting
– Working sliding doors
– Working elevators and escalators
– Real working solar panels
– Train station
– Bus station
– Monorail station

Technical details
The station has three floors which are reachable by escalator or elevator. Outside are two platforms that give access to three tracks where trains can stop. Since the platforms are very long, they can be divided into an A and a B platform, giving a total of six platforms.

The sliding doors are a combination of a Power Functions M-motor, a chain and a clutch gear. The doors are opened by the microcontroller, based on a randomized open/closed time.

Sliding doors

The elevators work also with a Power Functions M-motor and a clutch gear. To stop at different floors, a timer is used to enable the motor to move the elevator to the wanted floor. Since small differences in friction cause the elevator to run “out of phase” (it doesn’t stop exactly at the wanted floor, but a few mm above or below it) after a while, the system needs to be “reset” by sending the elevator to the 3rd floor (roof), where the spool is rolled entirely. After that the clutch gear kicks in. I could have made the system more intelligent by using sensors, but I’ve chosen not to to minimize the amount of visible cables.

Elevator motor

The escalators are powered by an old 9V motor which I had laying around. One set of escalators is powered by one motors. By using a combination of gears, the escalators turn in oposite direction. The axle of the escalator is connected with a chain to the axle of the gear combination. The base of the escalators is a chain made of modern technic links. In the technic links are two 1/2 technic pins on which a 1×4 plate is attached. On top of that plate are two hinges that make the step horizontal. On top of the hinges is a finishing layer with a jumper plate and tiles.


Also the escalators are controlled by the Arduino controller. This is done since the escalators are heavy and need some extra power when started. Next to that I can make it stop after a few seconds when shooting a scene with minifigs on it.

All ceilings in the main building and waiting areas outside have built-in lighting. The built-in lighting is made by sticking a LED through a technic plate and attaching a transparant 2×2 plate.

built-in lighting

First floor
The first floor contains the following features:
– Two pairs of sliding doors (randomized timer based control)
– Information counter
– Ticket machines on several places
– LCD that displays departure times and commercial ads
– Fast food restaurant
– Flower shop
– Toilets (this is where the electronics are hidden)
– Lockers
– Vending machine
– Access to the 2nd floor by escalator
– Acces to the 2nd and the roof by elevator

Second floor
The second floor contains the following features:
– Lego shop (duh)
– Police station for security purposes
– Kiosk
– Premium coffee bar (Coffee Chain)
– Italian pizza restaurant
– Canteen
– Vending machine
– Access to the 1st floor by escalator
– Access to the 1st and the roof by elevator
– Access to track 2 and 3 by pedestrian bridge

The roof contains the following features:
– Terrace with bar
– Real working solar panels
– Air-conditioning units with turning fans
– Fire staircase

Youtube videos

Playlist Work In Progress videos:

Trailer main video:

Main video:

Photo gallery