Can you describe with more details what are you doing and how this project organized?

Hello, Yes.

There are a couple of different parts of this project.

We have the web based print queue that manages the work list for the printers. This is written is LARAVEL php. 

We have client that runs on an raspberry pis and retrieves print jobs from the queue and controls each printer. Right now the client can be set up to control autodrop printer hardware or normal hardware. If it is normal hardware it just waits for a user to click a button attached to the pi to indicate they have removed the print job and allow it to retrieve the next print from the queue. It it is an autodrop printer it automatically ejects the part and fetches a new job if available. 

We have the actual printer mechanical design. Right now it uses a standard kossel delta design. We build it so that the motor are on the top rather than the bottom of the printer and mount this above the build plate that be retracted in to a blade for automatic part removal. 

You can see the printer and the software workflow if you visit hhttp://autodrop3d.com