Rain Shadow

Rain Shadow is the standalone version of the half-wave modulator found in our Lynchian Device VCO.

Based around a repurposed triangle-to-saw wave converter, Rain Shadow injects a modulation source into one half of the signal source waveform, allowing for the creation of a complex array of waveforms and sound possibilities: From a “twin peak” waveform, to weird ADSR-like shapes, to spy fedoras and complex, animated FM sounds.

With a low parts count, relatively simple design and more bang than makes sense for the buck, Rain Shadow is a great module for beginner SDIY enthusiasts.

Schematic

As with any schematic found on the internet, exercise caution when building. Test the build before plugging it into your case. If you find mistakes in the schematic, or you have recommendations for improving the design, feel free to contact us and let us know.

BOM

• Capacitors
  • 10nf (1) C1
• Resistors
  • 1k (2) R8, R9
  • 6.8k (3) R1, R3, R5
  • 10k (3) R2, R4, R7
  • 200k (1) R6
• Potentiometers
  • 100k (1) RV1
• ICs
  • TL074 (1) U1
  • CD4016 (1) U2
• Audio jacks (4) J1, J3, J4, J5
• Switched audio jack (1) J2
• VTL5C Vactrol (1) U3