Enclosure not stated · 3 knobs
Lovepedal EternityVerified
Based on the Lovepedal Eternity· 6 other boards clone it
From the post
The Eternity Overdrive is kind of like the Big Muff of Lovepedal in that it has a ton of different versions (there are over 10 I believe), but it's basically a Tube Screamer without the input/output buffers. I've drawn up 2 versions here, the Black and the Burst. The main difference between the 2 is the clipping stage. The Black version has an asymmetrical clipping stage, while the Burst has a 4 diode symmetrical clipping stage. The other differences are just minor value changes.
I've added polarity protection and put the LED resistor on the board. I've also added a 47pf cap in parallel with the clipping diodes in the Burst version that MadBean added in his Drunken Dragon version of the Eternity. Sean from Lovepedal says that the secret behind the Eternity is a LM1458, but any dual op-amp should work fine (JRC4558, NE5532, TL072, etc.). They'll just sound different, so adjust to taste.
Board size on both layouts is 2 x 1.4 inches or 51 x 35.5 mm.
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 19 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 55nF film cap left of the LM1458: printed clearly on both the board and the wiring diagram, unusual value (56nF is the standard one)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×1 | 390Ω | 390 | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | feeds the LED pad; read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 55nF | 55n | read from the layout by eye | |
| ×2 | 150nF | 150n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 4 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM1458 | LM1458 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B5K | B5k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
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