Enclosure not stated · 3 knobs
Earthquaker Devices HummingbirdVerified
Based on the EarthQuaker Devices Hummingbird· 4 other boards clone it
From the post
Here's a cool variation of the Vox Repeat Percussion tremolo from EQD. It adds some extra controls to the original circuit for more versatility and control. I had a hard time tracking down a schematic for this one and ended up just tracing the vero layout from the Tagboard Effects blog. So here you go internet, the schem for the Hummingbird:
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 22 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×1 | 39Ω | 39 | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×2 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×1 | 27K | 27k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×2 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q2 | 2N5089 | 2N5089 | read from the layout by eye | |
| Q3 | 2N2646 | 2N2646 | unijunction; read from the layout by eye | |
| Potentiometers 3 | ||||
| Level | B50K | B50k | Potentiometer | read from the layout by eye |
| Depth | B25K | B25k | Potentiometer | read from the layout by eye |
| Rate | B50K | B50k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Mode | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
Other boards based on the EarthQuaker Devices Hummingbird
- Tremolo Device PCB Guitar Mania · 1590B · €9.90
- Hummingbird PCBWay: Glory to Ukraine
- Woodpecker Tremolo PedalPCB · 125B · $10.00
- EarthQuaker Devices Hummingbird Tagboard Effects