Enclosure not stated · 3 knobs
Death By Audio Robot - moddedVerified
Based on the Death By Audio Robot· 6 other boards clone it
From the post
This was my take on the DBA Robot but with individual switching for the IC internal functions (Vibrato, Robot and any of the octave options on the fly) rather than the rotary switch used in the original. I thought it would be more versatile to be able to control them all individually rather than be stuck with the choices dictated by the original scheme, and all the sounds will be there with the correct settings of the toggles. The Gain control has also been taken external after a recommendation from albru80.
I think it's probably not really worth including both and up and down momentary switches on reflection as that only chooses the direction that you step through the octave choices. So maybe removing one of those makes more sense. I'd suggest reading through the datasheet and deciding yourself what to include.
Info about the original:
The Death by Audio Robot is the latest in a line of sonic mayhem inducing pedals from our boys in NYC. The Robot brings Death by Audio into the low-fi, bit-crushing business. This insane pedal is a lo-fi pitch transposer that produces sweet, 8-bit ring mod effects to your guitar. The Robot features four operational modes; Normal, Octave Up, Octave Down, and Arpeggiator. The Octave Up and Octave Down modes are pretty self explanatory. The Control knob, when fully clockwise, yields either octave up or down depending on the mode. When turned down, it bends the pitch of the octave down so you can dial in the exact tone you want. In Normal mode the Robot acts as a lo-fi fuzz pedal and the Control knob bends the pitch down from clockwise. The amount of fuzz can be further toyed with using the internal gain control. Now the fun part. The Death by Audio Robot also features an arpeggiator. The pitch will arpeggiate in a sequence and the Control knob will adjust the speed of the arpeggiation. It also makes a slight change in the pitch, allowing the arpeggiator to go higher. With all this fun, who needs anything else? Arpeggiation, whacky robotic nonsense, and 8-bit fuzz fun are all jam packed together in the Death by Audio Robot.
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 25 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 3 values the reader of this layout was not sure of
- 43R, two of them (left edge by the Input wire, and right of IC2): printed clearly, unusual value; a 43K is also on the board lower left
- 430K top right next to Z1: printed clearly, unusual value
- 2u2 right of IC1: drawn as a blue box, not a round can, so not marked electrolytic
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×2 | 27K | 27k | read from the layout by eye | |
| ×2 | 43R | 43 | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 430K | 430k | read from the layout by eye | |
| ×1 | 330R | 330 | read from the layout by eye | |
| ×1 | 1K5 | 1.5k | read from the layout by eye | |
| ×1 | 43K | 43k | read from the layout by eye | |
| ×1 | 5K6 | 5.6k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| Capacitors 5 | ||||
| ×4 | 330n | 330n | read from the layout by eye | |
| ×2 | 100n | 100n | read from the layout by eye | |
| ×1 | 470p | 470p | read from the layout by eye | |
| ×1 | 2u2 | 2.2u | drawn as a box; read from the layout by eye | |
| ×2 | 33u | 33u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| Z1 | 1N5227 | 1N5227 / 3V6 | zener; read from the layout by eye | |
| Z2 | 1N5227 | 1N5227 / 3V6 | zener; read from the layout by eye | |
| ICs 2 | ||||
| IC1 | HT8950 | HT8950 | read from the layout by eye | |
| IC2 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Control | B500K | B500k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Gain | B1M | B1M | Potentiometer | read from the layout by eye |
| Switches 4 | ||||
| Up | SPST momentary | SPST MOMENTARY | read from the layout by eye | |
| Down | SPST momentary | SPST MOMENTARY | read from the layout by eye | |
| Vibrato | SPST momentary | SPST MOMENTARY | read from the layout by eye | |
| Robot | SPST momentary | SPST MOMENTARY | read from the layout by eye | |
Other boards based on the Death By Audio Robot
- Death by Audio Robot Dirtbox Layouts
- Death by Audio Robot Effects Layouts (blog)
- WALL-E Moonn Electronics · €5.50
- Dead Robot PCB Guitar Mania · €9.90
- Roboto PedalPCB · 125B · $10.00
- Death by Audio Robot Revolution Deux