Available as an assembled Module and as a DIY project.
This Module is currently available.
3hp skewable cross-fading low frequency oscillator
The SF-LFO is a 3hp all analog low frequency oscillator. It has three rate settings capable of 3 minutes and 30 seconds a cycle up to audio range at 20 hz. Triangle waves can be skewed between saws and ramps, and square waves pulse width can be adjusted. The unique feature is a voltage controlled cross fade circuit between skewable sine and square waveforms. Bicolor led provides constant display of positive and negative voltage crossings. waveform output 10vpp
built $80, kit $50, pcb/panel $20
currently only available at thonk, synthcube, and wurlys
3 Users are observing this
These merchants probably sell this module. Huh?