Akashic Guitar effects PCB lookup
DEPTHRATEVOLUME

125B · 3 knobs

PCB Guitar Mania

Caleidoscopia

Based on the Catalinbread Pareidolia· 1 other board clones it

Category
Phaser· Harmonic Tremolo - Vibrato
Controls
Depth · Rate · Volume
Difficulty
Advanced
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 Catalinbread Pareidolia. Caleidoscopia is a pedal emulation of the Tremolo from the 60s Brownface Amps.

Introduction

Caleidoscopia should be described as a mix between vibe, phaser, and tremolo. The result is a complex and subtle sound. That’s probably why the original 60th pedal has “harmonic mesmerizer” as a subtitle under the name. It adds a unique color with quite some highs to your tone, even if you set everything at 0% and boost the volume (yes, you can use it as a volume boost). Don’t let the fact that it only has rate, depth, and volume deceive you: this little treasure also delivers an extensive range of sounds.

Regarding the technical aspects, there are plenty of fake chips from the XR2206cp out there; We highly recommend using a trusted source for this and spend a few bucks extra than going through the hustle of troubleshooting later. Its ability to boost lets you add a volume pot up to a500k, but it gets harder to dial in the unity level. So, we suggest reducing this value to a250k or even a100k depending on your taste if you’re not interested in this little extra feature.

Try the Caleidoscopia into the front of any clean amplifier’s effects loop to give your sound some sick 60’s swirl.

Many struggles to classify the effect this little gem of a pedal offers; all we can say is that the result is unique and beautiful.

Controls

• Depth

• Rate

• Volume

For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.

For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Caleidoscopia – Building Docs

Caleidoscopia – 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 62 rows

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RefValueNormalizedTypeNotes
Resistors 25
R11m1M
R21m1M
R34k74.7k
R41m1M
R51m1M
R61k1k
R71k1k
R81m1M
R91m1M
R101m1M
R111m1M
R1222k22k
R1310k10k
R141m1M
R151k1k
R161k1k
R171m1M
R18100k100k
R1910k10k
R2010k10k
R2110k10k
R22270r270
R2310k10k
R2410k10k
R251m1M
Capacitors 19
C1270p270p
C2100n100n
C32n22.2n
C4100n100n
C5100n100n
C7100n100n
C8220p220p
C62u22.2u
C92u22.2u
C1047u47u
C111u1u
C121u1u
C134u74.7u
C141u1u
C1547u47u
C1610u10u
C1710u10u
C1810u10u
C1947u47u
Diodes 5
D11n41481N4148
D21n41481N4148
D31n58171N5817
D41n58171N5817
D51n58171N5817
Transistors 6
Q12N54852N5485
Q22N54852N5485
Q32N54572N5457
Q42N54852N5485
Q52N54852N5485
Q62N54572N5457
ICs 3
IC1TL072TL072
IC2TC1044SCPATC1044SCPA
IC3XR2206PXR2206P
Potentiometers 3
DEPTH10K10kPotentiometer
RATE1M1MPotentiometer
VOLUME500K500kPotentiometer
LEDs 1
LED1LEDLED

Other boards based on the Catalinbread Pareidolia