For the price of a 3D printer and plastic, I was way under the price that Haslab wants for one of these. Plus I got to put a servo on the rear ramp and control DotStar LEDs from a BLE HM-10 and an app on my phone.
Files for this larger version are here. Easily fits all 3.75" action figures.
Here I am getting the servo to work with the back ramp.
Here is my completed Diorama!
for the Phone app. I added multiple buttons and gave each button a control word to send to the arduino. I used and HM10 at the Teensy3.2 for receiving the commands then the program just moves the ramp up or down or changes the color of the LED. I am working on the sound FX next and will update here when that is done.