The Ultimaker is open hardware, which means that the design files are published for you to improve and modify. This includes electronics CAD files, files used for laser cutting and the firmware’s and PC-software’s source code. This has allowed people in the community to create these add-ons for the Ultimaker and, more in general, improve almost any aspect!
We at Ultimaking Ltd. do not believe in the creation of artificial scarcity but strive to preserve important intellectual freedoms. We believe it would be a shame to develop something good and to keep it to ourselves. Moreover, we want to hear about, and see your improvements without requiring you to ask for permission to innovate!
We only ship official Arduino Mega 2560′s, for their quality, but also to support the open hardware ecosystem.
The design files are on Thingiverse, here.