I’m blocked from modifying the Flux project right now because execution credits are unavailable, so I have not added components, wiring, or layout yet.
Recommended schematic direction for your Jerry Garcia-style guitar JFET buffer:
- Power: 9 V battery input with nets labeled V+ and V-
- Signal I/O: high-impedance Input and low-impedance Output
- Core circuit: single JFET source follower buffer, similar to classic onboard guitar unity-gain buffers
- Likely topology:
- JFET drain to V+
- JFET source through resistor to V-
- Gate biased with large-value resistor to V-
- Input coupling/protection as needed
- Output AC-coupled from source
- Connectors: 4 external pads or header pins:
- PCB goal: small guitar-cavity-friendly board, likely around 0.75 in × 0.5 in or smaller depending on through-hole vs SMD parts.
What remains to be done when execution is available:
- Rename the project from the placeholder name.
- Choose the exact JFET, preferably a low-noise audio JFET such as J201, 2N5457, or an available SMD equivalent.
- Verify the JFET datasheet pinout and bias requirements.
- Add the JFET, resistors, capacitors, battery/input/output pads, and optional power filtering.
- Wire the schematic with nets named V+, V-, Input, and Output.
- Run electrical review and fix any violations.
- Size the PCB for guitar installation.
- Place parts compactly and route the board.
Once credits are available, I can build the schematic and PCB directly in the project.