Enclosure not stated · 4 knobs
Catalinbread HeliotropeVerified
Based on the Catalinbread Heliotrope· 2 other boards clone it
From the post
This circuit is quite infamous for being quite noisy with oscillator bleedthrough just as for most Bit Crushers. ,And to make things worse, this one has a built in fuzz circuit that amplifies noise even more. Hopefully, the separate ground connections for the fuzz/output buffer section and the the oscillator will tame some noise.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 26 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×4 | 10K | 10k | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×2 | 47Ω | 47 | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 2K | 2k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | D1-D4; read from the layout by eye | |
| D5 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 2 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | LM741 | LM741 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | A100K | A100k | Potentiometer | read from the layout by eye |
| Sample Rate | B1M | B1M | Potentiometer | read from the layout by eye |
| Resolution | B100K | B100k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
Other boards based on the Catalinbread Heliotrope
- Heliotrope PCBWay: Glory to Ukraine
- Catalinbread Heliotrope Tagboard Effects