Explore the innovative Rockling FPGA Audio processor and Theremin SAO, as well as the Party Button SAO, in this 33-minute conference talk from linux.conf.au. Discover the inner workings and capabilities of these two exciting SAOs (Shitty Add-Ons) included in the hardware kit. Learn about the unique features of the FPGA-based audio processor, the electronic musical instrument inspired by the theremin, and the fun party button accessory. Gain insights into open-source hardware design and implementation from presenters Andy Gelme and Jonathan Oxer as they delve into the technical aspects and potential applications of these creative add-ons.