Octopus FV-1

Project overview

PCB Guitar Mania Octopus Platform is a powerful device to run up to 8 different modulation patches (Reverbs, Delays, octavers, phasers, pitch shifters, etc) through the powerful Spin FV-1 IC, just by replacing the provided Eeprom memory ICs.

This technology is responsible for feeding crazy projects such as the Earthquaker devices Rainbow Machine, Avalanche Run, and more.

Introduction

The Octopus Platform is much more than just another simple board to build a single effect; it is an analog platform based around the digital Spin FV-1 that allows you to run multiple different effects with the same box.

This circuit has been developed to be the ultimate Spin FV-1 platform, integrating this digital IC as any other analog component of the signal path.

The Trinity platform can read up to three different programs by using the provided EEPROM memory IC. You can select in between 3 totally different programs just by the flip of the toggle SW1.

But the magic of this platform is that just by replacing the memory IC, you can totally change the pedal’s effects. Let’s say, for example; you have two EEPROMS, EEPROM-A (Shimmer, spring reverb, modulated reverb) and EEPROM-B (Flanger, pitch shifter, octaver), just by removing the first one and placing the second one instead of you’d a completely different set of effects out of it.

With 3 potentiometer inputs, programs may have real-time variable parameters such as decay time in a reverb, rate and depth in a chorus, or frequency in a filter. These inputs are available as coefficients to your program and may be used independently of each other.

We have Scheduled the release of more and more patches to take all the juice out of this powerful platform.

Controls

The controls of the Octopus vary according to the program running on it. However, it has some common controls from the analog path that applies to any patch running on.

• Ctrl1, Ctrl, 2, Ctrl3: Control different parameters according to the patch running on, like decay, delay time, repeats, feedback, and more.
• Mix: Regulates the mix of the dry signal and the wet.
• Level: Output level of the effect.
• Sw1: This is the program selector; just by changing the rotary’s switch position, you’ll access a totally different patch.

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.

Octopus Multi FV-1 Platform – Building Docs

Octopus Multi FV-1 Platform – Drilling Template