Akashic Guitar effects PCB lookup
FIRSTMAGICSECONDTONETRACKINGPITCH

1590BB · 6 knobs

PCB Guitar Mania

Rainbow Device

Based on the Rainbow Machine

Category
Vibrato / Chorus· Polyphonic harmonizing
Controls
First · Magic · Second · Tone · Tracking · Pitch
Difficulty
Advanced
Price
€14.90out 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 Rainbow Machine. Are you brave enough to jump into the rabbit hole to see how far your sound can go with this polyphonic harmonizing modulation machine?

Introduction

If you are the type of person who loves to experiment with your waves, you need to have this board. The Rainbow Device will definitively get you further away from the typical guitar sound and expand your possibilities beyond the known.

Once your signal travels to this board, it will put a new twist on your playing by adding polyphonic harmonies, real-time pitch shifting with wild launches and descends, pandemonium chorusing, and a large etcetera of transformations before your very ears.

Requires a Spin FV-1, meaning SMD soldering of an expensive 28 pin IC. So, we would not recommend this project for beginners. A lot of Flux and taking the time you need helps to get this done. There are also tutorials online that will help you manage this. For the expression pedal, you need a switchable jack, or you will have problems with the signal not passing through.

But this pedal worth every drop of sweat. We still remember when we tried this polyphonic pitch shifting harmonizer for the first time. Hours passed without us noticing the time flying. And while we were having fun, we invoked some alien sang, psychedelic rainbows, pixie dust, and swelling chorus. Who knows what you will summon with this incredible board?

Controls

• First

• Magic

• Pitch

• Second

• Tone

• Tracking

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.

Rainbow Device 1.1v – Building Docs

Rainbow Device – Building Docs

Rainbow Device – Drilling Templates

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 73 rows

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Resistors 31
R11M1M
R21k1k
R31M1M
R410k10k
R54k74.7k
R61k1k
R71k1k
R81k1k
R91k1k
R1010K10k
R1110K10k
R1210k10k
R1310k10k
R141k1k
R1510k10k
R161k1k
R1710k10k
R1810k10k
R1910k10k
R2047k47k
R2110k10k
R2215k15k
R231k1k
R24100k100k
R25100r100
R2610k10k
R274k74.7k
R2810k10k
R2910k10k
R3010k10k
R3110k10k
Capacitors 29
C1100p100p
C2100n100n
C31u1u
C41n1n
C61u1u
C71n1n
C81u1u
C91u1u
C101u1u
C112n22.2n
C12100n100n
C131u1u
C141u1u
C151u1u
C161u1u
C171n1n
C181u1u
C191u1u
C2047n47n
C211u1u
C221u1u
C241n1n
C26100n100n
C510u10u
C2310u10u
C25100u100u
C2710u10u
C281u1u
C29100u100u
Diodes 3
D11n41481N4148
D21n41481N4148
D31n58171N5817
ICs 4
IC1TL072TL072
IC2FV1FV1
IC3TL072TL072
IC44069n4069N
Potentiometers 6
FIRST10KBB10kPotentiometer
MAGIC25KBB25kPotentiometer
SECOND10KBB10kPotentiometer
TONE10KBB10kPotentiometer
TRACKING25KBB25kPotentiometer
PITCH50K50kPotentiometer