The Holiday controller is an open source hardware design, originally inspired by the Olimex OlinuXino (https://www.olimex.com/Products/OLinuXino/iMX233/) – a Freescale iMX233 based embedded linux development board.
We used the OlinuXino iMX233 Maxi and Micro boards during development and testing of both the Light and Holiday, before designing our own custom PCB layout to suit the form factor and specific requirements. The Holiday also incorporates an ATmega328 (running the “Arduino” environment) that communicates with the Linux environment for handling control during Linux boot-up and providing the tight timing requirements of sending data to the WS2812 LEDs.
Shown above and below are our revision 1 prototypes in a CNC’d plastic enclosure made specifically for use at PyCon Australia 2013. The picture below also shows a 3 pin serial debug connected (at the centre top).
The revision 2 hardware design is in Altium Designer (v13) format, and the Altium files along with the BOM, PDF, and gerber outputs are now available under the Creative Commons Attribution Share-Alike license (http://creativecommons.org/licenses/by-sa/2.0/au/).
See the MooresCloud holiday-hardware github repo for the files.
Footnote by Kean 18Sep2013: Due to supply issues with the 16MHz crystal we included in the BOM, the production Holiday will actually use a 20MHz crystal for Y2 (the ATmega328 “Holidayduino”). This leads to some special set up for compiling your own code in the Arduino environment. I’ll be documenting this soon.
