The first prototype was made out of a cardboard wrapping paper tube and had first only one, then four valves, allowing the instrument to play a total of five distinct pitches.
Following the dissolution of that group in 1991, he spent two months in early 1992 living in the Aboriginal community of Galiwinku on Elcho Island, off the coast of Arnhem Land, in Australia's Northern Territory, where he studied the advanced traditional didgeridoo techniques of the area.
With the exception of a few songs such as "Brolga," Wiggins' compositions are generally not based primarily on traditional Aboriginal structures, but instead on the use of the instrument's percussive, rhythmic, and melodic capabilities.
After a few years hiatus, Dr. Didg began touring again in 2010, including performances at the All Good Music Festival at Marvin's Mountaintop in Masontown, West Virginia, and Meeting of the Minds III in Poyntelle, Pennsylvania.
During this time, he helped to develop new technology for MRI scanners, including many-element detector arrays that enabled the acquisition of faster and sharper images.
The RF engineering group he led introduced various innovations in the design of MRI detectors and transmitters for a range of applications in research and clinical imaging.