SCM 140 ADSR

Maker	Jypma
Type	Roland System 100 style ADSR envelope
Mounting	Through-hole
Width	10 HP
License	Proprietary (No licence published)
Difficulty	🌶️ Large through-hole

Clone of Roland System 100 SCM-140 ADSR, from Gerbrand Sterrenburg's board. All through hole, with a high transistor count. The README notes the resistor and capacitor changes needed to get a usable envelope length.

Documentation

• Assembly instructions
• Bill of materials (BOM)
• Schematic

Links

• Source / files on GitHub
• Maker page

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This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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