Drone Oscillator

Maker	Johansen Engineering
Type	Reverse avalanche BJT drone oscillator with vactrol modulation
Mounting	Mixed
Width	—
License	Proprietary (No licence published on this repo)
Difficulty	🔥 SMD (0805)

Clone of Inspired by Kerry Wong's avalanche oscillator and Look Mum No Computer's simplest oscillator. Built on SS9018 transistors run in reverse avalanche breakdown, so the sound depends heavily on the exact transistor. The base of each BJT is the modulation point.

Documentation

• Fabrication files (PCBA-ready)

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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