SKU: 35735957401

Pedal Brainz Left Brain Expression Pedal

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Description

Pedal Brainz Left Brain Expression PedalMaker: Pedal Brainz Model: Left Brain Condition: New Description: LEFT BRAIN EXPRESSION MODULATOR The Left Brain is a light controlled expression pedal that interfaces with effects offering expression control. Controllable patterns of light result in the virtual turning of knobs when used in conjunction with the available properties of a compatible effect pedal. Over 50 Modez of controllable expression, an expression pattern loop recorder, and a host

Maker: Pedal Brainz

Model: Left Brain

Condition: New

 

Description: 

LEFT BRAIN - EXPRESSION MODULATOR

The Left Brain is a light-controlled expression pedal that interfaces with effects offering expression control.

 

Controllable patterns of light result in the virtual turning of knobs when used in-conjunction with the available properties of a compatible effect pedal.

Over 50 Modez of controllable expression, an expression pattern loop recorder, and a host of other features to harness the potention waiting in your effects pedals.

LEFT BRAIN - CREATIVE EXPRESSION

What if you could get a little more modulation from an effect on the floor, without resorting to yet another giant-sized foot-controllable expression pedal.

 

Tired of repeating patterns of sine/ square/ triangle waves and eager to break the cycle with some constrained randomness?

Check out the documentation for an overview of the different modez, controls, and features.

NEW FEATURES IN VERSION 2

v2 - Arduino Upgrade - The Arduino QTPY replaces the Gemma M0 from v1 for even more creative computer controlled opportunities. With open-source software and full programmability, the Left Brain can be adopted and expanded to allow for any controllable patterns of light you can imagine.

v2 - LED Backlit Knobs - The Left Brain now features addressable LEDs behind each knob in v2. With light no longer confined to the inside of the enclosure, additional feedback can be provided about the different Modez through light. With the newly expanded Arduino capabilities there are now 5 total addressable LEDS (2 internal, 3 external) which can be configured to either modulate the expression or provide illumination through the knobs. Additional consideration has been made to allow for the scaling of the knob lights through software so you can choose how bright they are on the outside. 

v2 - Buttons - Two buttons replace the complicated dance of knob turning from v1 and makes changing between new Modez and Banks of Modez easy. This also means the ability to create utility and special Modez.

 

v2 - Voltage Regulator - Leveraging standard 9v center-negative effect pedal power means stepping down to 5v to power the Arduino and LEDs in the Left Brain. While the voltage divider used in v1 worked great to power the Gemma M0, the addition of LEDs behind the knobs in v2 has increased the need for stable 5v power. The left brain now uses a 1117 5v Voltage Regulator that is surface mounted on the expression board.

 

v2 - Surface Mount Resistors - Each of the models in the Pedal Brainz Series can be easily adapted to provide different resistance to ensure maximum compatibility across the specifications of different effect pedals. This is achieved through a matrix of resistors that can be switched between (10k, 25k, 100k) in-conjunction with the scale knob, bringing flexibility and creativity. While the through hole resistors of v1 allowed for greater modding flexibility, v2 uses tiny surface mount resistors that make production faster.

LEFT BRAINZ

Have you ever wished for a tiny semi-sentient clone of your brain to turn the knobs of effect pedals while floating effortlessly across the fretboard without worry?

Do you like watching patterns of flashing light working in concert with the parameterization of effect properties while jumping off the deep-end of reality?

Harness the fully configurable power of your Left Brain and unlock the creative expression waiting for you with Pedal Brainz.

LEFT BRAIN - CREATIVE EXPRESSION

What if you could get a little more modulation from an effect on the floor, without resorting to yet another giant-sized foot-controllable expression pedal.

 

Tired of repeating patterns of sine/ square/ triangle waves and eager to break the cycle with some constrained randomness?

Check out the documentation for an overview of the different modez, controls, and features.

v2 - Arduino Upgrade - The Arduino QTPY replaces the Gemma M0 from v1 for even more creative computer controlled opportunities. With open-source software and full programmability, the Left Brain can be adopted and expanded to allow for any controllable patterns of light you can imagine.

v2 - LED Backlit Knobs - The Left Brain now features addressable LEDs behind each knob in v2. With light no longer confined to the inside of the enclosure, additional feedback can be provided about the different Modez through light. With the newly expanded Arduino capabilities there are now 5 total addressable LEDS (2 internal, 3 external) which can be configured to either modulate the expression or provide illumination through the knobs. Additional consideration has been made to allow for the scaling of the knob lights through software so you can choose how bright they are on the outside.

v2 - Buttons - Two buttons replace the complicated dance of knob turning from v1 and makes changing between new Modez and Banks of Modez easy. This also means the ability to create utility and special Modez.

 

v2 - Voltage Regulator - Leveraging standard 9v center-negative effect pedal power means stepping down to 5v to power the Arduino and LEDs in the Left Brain. While the voltage divider used in v1 worked great to power the Gemma M0, the addition of LEDs behind the knobs in v2 has increased the need for stable 5v power. The left brain now uses a 1117 5v Voltage Regulator that is surface mounted on the expression board.

 

v2 - Surface Mount Resistors - Each of the models in the Pedal Brainz Series can be easily adapted to provide different resistance to ensure maximum compatibility across the specifications of different effect pedals. This is achieved through a matrix of resistors that can be switched between (10k, 25k, 100k) in-conjunction with the scale knob, bringing flexibility and creativity. While the through hole resistors of v1 allowed for greater modding flexibility, v2 uses tiny surface mount resistors that make production faster.

LEFT BRAINZ

Have you ever wished for a tiny semi-sentient clone of your brain to turn the knobs of effect pedals while floating effortlessly across the fretboard without worry?

Do you like watching patterns of flashing light working in concert with the parameterization of effect properties while jumping off the deep-end of reality?

Harness the fully configurable power of your Left Brain and unlock the creative expression waiting for you with Pedal Brainz.

HARDWARE FEATURES

3 Control Knobs:
Adjust the properties of light patterns and expression. (See Banks/ Modez below for property details)

2 Buttons:
Single-click to Increase or Decrease Mode number.
Double-click to Increase or Decrease Bank number.
***Bank change always begins with Mode 1 of new Bank***

Expression Type Switch (EXP / EYE):
Choose between manual expression (EXP) or engage the internal photocell (EYE) to add light-based control.

Scale Knob:
Variable control of the Maximum expression value.

Range Switch ( Least | / Less || / Full ||| ):
Adjusts the Maximum range of the Scale Knob.

Tip Direction (TR / RT):
Swaps the direction of expression between Tip-Ring (TR) and Ring-Tip (RT) for greater compatability across effects.

TRS 1/4" Jack:
Requires TRS (Tip, Ring, Sleeve) between Pedal Brain and effect.

DC Jack:
Tip Negative, Sleeve Positive.

USB-C Jack (Internal):
For accessing the internal Adafruit QTPY platform.

MODULATION WAVEFORMS

50 Modez are accessible across 5 Banks featuring an incredible selection of favorites as well as many which have been specially formulated to add unique expression and constrained randomness.

Greatest Hitz: While each mode is unique in this Bank, they cover the basics represented across the other Banks and are the perfect place to begin exploring Expression Modulation.

Shapez: A collection of Modez that fall into the Square and Triangle shaped modulations category, with a few surprises.

Rainbowz: Undulating color sequences with various static and random variations that can be modified.

Naturez: The great outdoors represented though color patterns, spontaneous eruptionz, and wild abandon.

Attractorz: Based on the Strange Attractors branch of mathematics, these modez provide creative, and often, non-repeating and steadily evolving patterns.

MODULATION CONTROLZ

Each Mode comes with a unique set of controls that allow for the fine tuning of modulation. Special focus has been put on creating Modez that are both functional and creative, often bringing the ability to refine or extend randomization to reign in the wild oscillations when called for or let loose with suprose and delight.

Here are some additional features that make the Pedal Brainz Left Brain unique:

External Brightness Control: This Mode sets the Maximum Brightness for the External Controls. If the external lights are too bright, you can turn them down using this Mode without effecting the Expression values.

Light Loopz - Expression Looper Mode: Light Loopz allows for the Recording of a combination of Manual Fade and/ or Momentary Full Brightness that plays back with adjustable Speed and Brightness.

Duration/ Speed Multiplier: This Mode sets a Multiplier Amount that can be used to extend/ slow the duration of the cycling x1, x2, or x3.

Plus a few other hidden features!


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    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
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    SKU: 35735957401

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    4.6 ★★★★★
    Based on 25 reviews
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    A
    Verified Purchase
    AmberC
    Bozeman, US
    ★★★★★ 5
    My Dobermans favorite toy to destroy, and one of our recommended picks.
    Color: Checkers - Elephant (Gray), Size: Large
    Ok, here's an honest breakdown review. I have a 6 month old Doberman who shreds every stuffed animal and dog bed he's come across. He's one of the worst chewers I've owned. We have tried a WIDE variety of stuffed toys. That said, this elephant is his favorite toy. I have ordered 4 of them so far, and just ordered another 4-pack on a buy three get one free deal. The elephant stands out above all the other stuffed creatures from goDog for me as to durability. Hence why I keep buying more. But they usually last about 2-3 weeks on average. In our house, the poor creatures are subjected to vicious, crazy, shaking of the head, helicopter type rotation. It' so hard if it hits your bare arm or leg it actually stings especially when its wet. Then the old, put it between his legs laying down, tearing at the legs action. The limbs are usually the first things to go over time. But they are each almost self sealing, so you clean up as little fluff and keep using it. Eventually the pup reaches the main body and finishes it off. For a normal light to normal chewer, one of two will get you a long way. For those of us resigned to having zoomie type manic chewers that need a constant supply of toys, 2-3 week durability is pretty sound too. I do not recommend the green cheaper monster. It lasted about 45 minutes. The free replacement took about 3 days. Hopefully this aids you in your decision!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 10, 2026
    A
    Verified Purchase
    Ashley
    Cuba, US
    ★★★★★ 5
    Very durable for rowdy pups
    Color: Checkers - Elephant (Gray), Size: Large
    This toy has outlasted any other dog toy I have ever bought. I have one large and one medium dog who share toys, fight over toys, chew them to death and still play with them. It might be because it isn't one of their favorites. I don't know. All I know is that our house is littered with dog toys in different states of destruction and this elephant toy has very little damage. It has definitely been in the dog toy rotation. I had this toy for 2 months without any major damage. The day I wrote the review the dogs tore the leg off! I still think it is a good toy. Some toys lose the stuffing or squeaker the first day.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 18, 2025
    L
    Verified Purchase
    Lady
    Louisville, US
    ★★★★★ 5
    Great toy for a smaller dog
    Color: Checkers - Dinos Bruto (Purple), Size: Mini
    This is a small, firm, sturdy toy designed for chewing. It isn't a soft toy and it does not have a squeaker. My dog is only 8 lbs, and this is a perfect size for her. I discovered these smaller toys through my groomer. Other manufacturers make this size, as well. The "hard chew" part indicates that this toy will not be chewed to death easily. The oldest one that we have is still in good condition. It's a baby duck (also available on Amazon) and it's over a year old. The dinosaur is colorful, easy to throw, and a really cute. Every night, my dog gives these small toys a bath, cleaning them up by licking each one before going to sleep. It's as if they are her babies. Since she never had a liter, my vet said that they are about the size that her babies would have been, so she may see them as her babies. She treats them well. Every now and then they go" swimming" in the washing machine and come out looking bright and new again.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 2, 2026
    L
    Verified Purchase
    Lori
    Alexandria, US
    ★★★★★ 4
    Updated, still going !! didn't last two minutes.
    Color: Checkers - Elephant (Gray), Size: Large, Color: Checkers - Elephant (Gray), Size: Large
    I hated giving this a 1 star, because it was so cute when I unpacked it today. I just gave it to my dog and in less than two minutes he has a hole ripped in it.! he loves it so I don't wanna take it away from him, but I'm sure it's going to be gone in another few minutes. Why can't someone make a stuffed animal for a dog that lasts like they say so on their listing? I really should take it away from him and send it back, but I don't have the heart. I had to come back and give this a better review. it deserves at least four stars because even though he ripped holes in it, this one has lasted way longer than any other toy. He's actually still playing with it, and it still has some crinkle left to it so he didn't destroy the whole thing as quickly as he did other stuffed animals. I will certainly buy another one because at least it lasted a week so far!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 6, 2026
    R
    Verified Purchase
    Russell C. Longmire
    Omaha, US
    ★★★★★ 3
    Looks Nice But Destroyed by my Lab
    Color: Checkers - Elephant (Gray), Size: Large, Color: Checkers - Elephant (Gray), Size: Large
    A really cute little elephant. My lab loved it and carried it around for a week. Then the elephant began losing body parts. Both legs are gone now plus the big squeaker. Lab still likes the elephant and carries it around. Its loosing stuffing and the real question is what body part is next. Its nice but not tough.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 26, 2026

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