Enclosure not stated · 5 knobs
Tremulus LuneVerified
Based on the 4ms Tremulus Lune· 9 other boards clone it
From the post
Original design by Dan Green from Commonsound and now a very popular DIY project, this version based on the Tonepad schematic and corrections. For optional Symmetry pot to give you a sawtooth LFO in each direction, take a feed from Speed 3 and inline, solder in an anti-parallel pair of 1N4148 diodes. 1 of the diodes will go to Sym 1, the other to Sym 3, then Sym 2 links to Smooth 3 or Fine 1 & 2. The 4ms versions removes the Fine pot if you opt for the Symmetry pot, but there's no reason you can't use both if you want to. The Symmetry pot would be 500K.
The LDR ideally needs to be wrapped with D1 (black heat shrink tubing is great for doing that) or at least mounted facing each other. I purposely placed only links and thin leads between the two components and I have left enough separation so they can lean into each other, lie flat and be wrapped comfortably.
3 knob version without Fine and Spacing control as requested:
4 knob version without Fine control, but with Symmetry control and Spacing trimmer:
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 330R | 330 | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×1 | 2K7 | 2.7k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×5 | 220K | 220k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 330p | 330p | read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×2 | 1u | 1u | read from the layout by eye | |
| ×2 | 10u | 10u | electrolytic; read from the layout by eye | |
| ICs 2 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | JRC4558 | JRC4558 | read from the layout by eye | |
| Opto 1 | ||||
| LDR | 5K/500K | 5K/500K | LDR; read from the layout by eye | |
| Potentiometers 5 | ||||
| Spacing | B500K | B500k | Potentiometer | read from the layout by eye |
| Speed | B10K | B10k | Potentiometer | read from the layout by eye |
| Fine | B1K | B1k | Potentiometer | read from the layout by eye |
| Smooth | B500K | B500k | Potentiometer | read from the layout by eye |
| Depth | B1K | B1k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
| LEDs 1 | ||||
| D1 | 3mm red LED | 3MM RED LED | wrapped together with the LDR; read from the layout by eye | |
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