Many of my projects combine two of my interests, 3D Printing and Micro Electronics but this one combines three! in this case the extra one is barbecuing in that I have gotten a new ceramic grill, a Kamado Joe, and am building a heat control unit for it.
The 3D printed elements of it are the enclosure for a fan and a shutter that will be used to direct air into the grill and a case for the electronics that drive the airflow. The electronics will consist of an Arduino on a custom designed circuit board that is a daughter board to a Raspberry Pi Zero. the Arduino will run firmware that will slowly restrict airflow as a temperature is reached while the raspberry will provide the graphical user interface wirelessly on the home network.