125B · 3 knobs
Bionic Pandora
Based on the Bixonic Expandora· 4 other boards clone it
- Category
- Distortion· Unique Overdrive / Distortion
- Controls
- Gain · Level · Tone
- Difficulty
- Intermediate
- Price
- €11.90out of stock
Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.
From the vendor
Project overview:
Inspired by the classic Bixonic Expandora, a distortion/fuzz pedal beloved by many guitarists and bands such as Billy Gibbons, Joe Satriani, Megadeth, and Bootsy Collins.
Bionic Pandora sets free a unique but totally useful character of overdrive, crunch, and distortion. The only downside is that we cannot guarantee that this thing won’t become self-aware.
Introduction
A few months ago, I purchased one of the earliest versions of the Bixonic Expandora. They say that some boxes are not meant to be opened, but I couldn’t resist my curiosity and had to take a peek inside that tuna-can-like enclosure. By doing that, I may have released serious sustaining, saturated tones destined to send humankind into sonic oblivion!
Our board is inspired by one of the earliest versions of the Bixonic Expandora, the Expandora II. The original pedal was loved but had its drawbacks, such as having its DIP switches inside. It was also a little thin-sounding.
Our Bionic Pandora, on the contrary, has more tone control and better low-end response due to the change from two internal dip switches for external toggles, making it way easier to dial your favorite settings. It also has an increased low-frequency response that gives the unit added power and depth.
These new features provide the sustaining, saturated tones of the original Expandora without sacrificing the sonic transparency and dynamic responsiveness that made the EXP-2000 famous.
Controls
Potentiometers
• Gain
• Level
• Tone
Switches
• SW1
• SW2
For further analysis on this circuit, take a look at this thread on Free Stomp Boxes and Diystompboxes forums.
For any technical questions regarding this build, don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.
Bionic Pandora 1v0 – Building Docs
Bionic Pandora – Drilling template
Schematic
The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 52 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 23 | ||||
| R1 | 2m2 | 0.0022 | ||
| R2 | 100k | 100k | ||
| R3 | 100k | 100k | ||
| R4 | 51k | 51k | ||
| R5 | 820k | 820k | ||
| R6 | 4k7 | 4.7k | ||
| R7 | 47k | 47k | ||
| R8 | 47r | 47 | ||
| R9 | 4k7 | 4.7k | ||
| R10 | 2m2 | 0.0022 | ||
| R11 | 2m2 | 0.0022 | ||
| R12 | 43k | 43k | ||
| R13 | 47r | 47 | ||
| R14 | 560r | 560 | ||
| R15 | 560r | 560 | ||
| R16 | 1k1 | 1.1k | ||
| R17 | 1k1 | 1.1k | ||
| R18 | 1k5 | 1.5k | ||
| R19 | 1m | 1M | ||
| R20 | 1k1 | 1.1k | ||
| R21 | 4k7 | 4.7k | ||
| R22 | 10k | 10k | ||
| R23 | 10k | 10k | ||
| Capacitors 16 | ||||
| C2 | 33p | 33p | ||
| C3 | 100n | 100n | ||
| C4 | 1u | 1u | ||
| C5 | 22n | 22n | ||
| C6 | 1n | 1n | ||
| C7 | 33p | 33p | ||
| C11 | 100n | 100n | ||
| C12 | 3n3 | 3.3n | ||
| C13 | 1u | 1u | ||
| C16 | 100p | 100p | ||
| C8 | 2u2 | 2.2u | ||
| C9 | 4u7 | 4.7u | ||
| C10 | 4u7 | 4.7u | ||
| C14 | 100u | 100u | ||
| C15 | 100u | 100u | ||
| C1 | 100n | 100n | ||
| Diodes 4 | ||||
| D0 | 1n5817 | 1N5817 | ||
| D1 | 1n4148 | 1N4148 | ||
| D3 | 1n4148 | 1N4148 | ||
| D4 | 1n4148 | 1N4148 | ||
| Transistors 1 | ||||
| Q1 | 2N3906 | 2N3906 | ||
| ICs 3 | ||||
| IC2 | LM308N | LM308N | ||
| IC3 | jrc4558 | JRC4558 | ||
| IC1 | LM308N | LM308N | ||
| Potentiometers 3 | ||||
| GAIN | 1MB | B1M | Potentiometer | |
| LEVEL | 1MB | B1M | Potentiometer | |
| TONE | 100KC | C100k | Potentiometer | |
| Switches 2 | ||||
| SW1 | SPDT | SPDT | ||
| SW2 | SPDT | SPDT | ||
Other boards based on the Bixonic Expandora
- Dynamo Aion FX · 125B · $12.50
- Expandora JMK PCBs · $12.00
- Dragonbeard Jr Madbean · 1590B · $10.00
- Pandora’s Box PedalPCB · 125B · $10.00