Enclosure not stated · 1 knob
Dead Easy Dirt V2
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From the vendor
Back in 2012, I put together the simplest circuit I could think of, which was a couple caps, a resistor or two, some diodes, and an LM386 amplifier IC. I left out everything that was 100% necessary for a functional circuit, including polarity protection, pulldown resistor, and power filtering. Lots of people built that simple circuit, so I thought I would update it a bit to include a few basic improvements that I had omitted from the original. The design owes a lot to the Big Daddy from RunoffGroove .
This one is perfect for breadboarding and experimenting. Try different diode types for D2 / D3, add a gain control via a pot between pins 1 and 8, change up the input and output caps, throw a simple boost in front, etc.
Also works great for building on perf or vero/strip board.
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Schematic
The schematic is in the post. Open it at Eff Dub Audio. No KiCad fragment has been drawn for this circuit yet.
Parts list 7 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 1 | ||||
| R2 | 1Mfixed | 1M | ||
| Capacitors 3 | ||||
| C2 | 47nfixed | 47n | ||
| C3 | 100nfixed | 100n | ||
| C4 | 100ufixed | 100u | ||
| Diodes 1 | ||||
| D1 | BAT41fixed | BAT41 | ||
| ICs 1 | ||||
| IC1 | LM386fixed | LM386 | ||
| Potentiometers 1 | ||||
| Vol | A100Kfixed | A100k | Potentiometer | |