https://github.com/rohanprichard/pedalboard

This project is a 29-note MIDI pedalboard for an organ, built using two Arduino Leonardo boards. Each board is recognized as a native USB-MIDI device, allowing it to send MIDI messages directly to a computer without additional software.
https://github.com/rohanprichard/pedalboard

midi midi-controller music organ pedalboard

Last synced: about 1 month ago
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This project is a 29-note MIDI pedalboard for an organ, built using two Arduino Leonardo boards. Each board is recognized as a native USB-MIDI device, allowing it to send MIDI messages directly to a computer without additional software.

• Host: GitHub
• URL: https://github.com/rohanprichard/pedalboard
• Owner: rohanprichard
• License: mit
• Created: 2025-01-31T06:50:53.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2025-02-04T19:17:40.000Z (over 1 year ago)
• Last Synced: 2025-03-20T22:47:35.938Z (over 1 year ago)
• Topics: midi, midi-controller, music, organ, pedalboard
• Language: C++
• Homepage:
• Size: 237 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# MIDI Pedalboard Project 🎹

## Overview 📖

This project is a **29-note MIDI pedalboard** for an organ, built using two **Arduino Leonardo** boards. Each board is recognized as a **native USB-MIDI device**, allowing it to send MIDI messages directly to a computer without additional software. The pedals are made from 3D-printed components and use momentary push buttons.

It is designed to be used with any MIDI software that supports USB-MIDI. However, the main usecase is to be used with Hauptwerk.

## Features 🌟

- **29-note range** (C0 to E2)

- **Plug-and-play USB MIDI** 

- **3D-printed pedals** with momentary push buttons set

## Parts List

  

    Component

    Quantity

  

  

    Arduino Leonardo

    2

  

  

    Momentary push buttons

    29

  

  

    Jumper wires

    50+

  

  

    Breadboard (optional)

    2

  

  

    USB cables (Micro/Mini)

    2

  

## Wiring Guide 🔌

### **Arduino #1 (First 14 notes: C0–F1)**

- **Pins Used**: 2–13, A0  

- **Wiring**:

  - One side of each button goes to an **Arduino pin**.

  - The other side connects to **GND**.

### **Arduino #2 (Next 11 notes: F#1–E2)**

- **Pins Used**: 2–12  

- **Wiring**:

  - One side of each button goes to an **Arduino pin** with its pull-up resistor enabled.

  - The other side connects to **GND**.

## Diagram 📊

Circuit connection Diagram: ![Pedalboard Diagram](./assets/Pedalboard.png)

Pedalboard-Schematic.pdf

## Setup & Usage 🎹 💻 🎧 

1. **Upload the sketches** to the respective **Arduino Leonardo** boards using the Arduino IDE.

2. **Connect both Arduinos** to the computer via USB.

3. The devices will be detected as **MIDI controllers**.

4. Open any **MIDI-compatible software** (Hauptwerk, GrandOrgue, DAW, etc.) and assign the MIDI inputs.

5. **Test the keys** by pressing the pedals and ensuring the correct MIDI notes are sent.

## Troubleshooting 🤔

- **Some keys are not responding?**

  - Check the wiring (ensure one side of the button is connected to the correct pin and the other to **GND**).

  - Verify that the **Arduino pins are set to INPUT_PULLUP**.

- **Arduino not detected as MIDI device?**

  - Make sure you're using an **Arduino Leonardo** (or another board with native USB-MIDI support).

  - Try a different USB cable/port.

- **Buttons triggering multiple notes?**

  - Ensure there are no accidental short circuits between button connections.

  - Make sure that all the pins in the arduino are connected, or there may be weird glitches like this.

## Future Improvements 🔮

- Add a **multiplexer** to use a single Arduino for all notes.

- Implement **velocity sensitivity** using force-sensitive resistors (FSRs) instead of basic push buttons.

- Add potentiometers to control the velocity of the notes.

---

## Open Source Contribution 🤝

This project is **open-source** under the **MIT License**, meaning you are free to use, modify, and distribute it with proper attribution. If you improve or extend the project, consider contributing back!

### How to Contribute 

1. **Fork the repository** on GitHub.

2. **Clone your fork** and make modifications.

3. **Submit a pull request (PR)** with a detailed description of your changes.

4. Your PR will be reviewed, and if accepted, it will be merged into the main branch.

### Ideas for Contributions 💡

- **Hardware Enhancements**:

  - Improve the pedal design.

  - Explore different button mechanisms (e.g., optical switches).

- **Software Features**:

  - Implement **velocity sensitivity**.

  - Add support for **MIDI CC messages** for pedal dynamics.

- **Code Optimization**:

  - Refactor the MIDI message handling.

  - Improve latency and responsiveness.

- **Expand Compatibility**:

  - Support additional MIDI mappings.

  - Integrate with alternative microcontrollers.

---

 This project is open-source and community-driven. Let's build something amazing together! 🚀

## License 📜

This project is open-source under the MIT License. See the LICENSE file for more details.