The SWAMP is a random CV and audio generator inspired by the famous Wiard Wogglebug module; it’s often the heart of self-generating patches and brings controllable randomness to your modular system. Random sounds and CVs in the Wogglebug are generated by the interaction between two linear CD4046-based VCOs (Tone and Woggle), where the frequency of each VCO is controlled by a sample and hold circuit that takes it’s input CV from the Woggle VCO output. In addition Tone and Woggle audio ring modulated output – Ring - is available.
Erica Synths DIY Multimode VCF is a multimode filter with a CV control over cutoff and resonance and simultaneous LP, BP and HP outputs for serious modular patches. The core of the VCF is highly stable, custom multimode VCF chip AS3320 (produced in Riga, btw).
DIY SWAMP @SHOP
DIY Multimode VCF @SHOP