An analog electric instrument built around the Moog Werkstatt synthesizer, inspired by the Mbira (or Kalimba). Metal tines on the front are tapped or plucked to play different notes. The plucks of the tines are picked up by piezo pickups on the two wooden bridges and used to modulate the sound. Two soft pressure pads on the back of the instrument allow further modulation by varying the amplitude and the low frequency oscillator rate.
Sigmoido is a stringed controller for the Moog Wekstatt synthesizer. It has six strings- three on each side, with five frets on each string. One side controls pitch in semitones, much like the bottom three strings of a guitar. The strings on the other side are more unique- one enables jumping pitch in fifth and octave intervals, the other controls the low frequency oscillator (LFO) rate, and the final string controls the filter. The LFO and filter are continuous parameters that are traditionally controlled using a continuous input such as a dial. Controlling them using discrete frets allows for a different interaction experience with the sound. Two central knobs control the envelope (attack and decay) of the sound. The string and fret being played are detected by measuring different resistance combinations, and all of the processing is done on an Arduino Uno.