https://github.com/RandomVertebrate/raspi-looper

Easy 4 track looper for RaspBerry Pi
https://github.com/RandomVertebrate/raspi-looper

Last synced: 1 day ago
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Easy 4 track looper for RaspBerry Pi

• Host: GitHub
• URL: https://github.com/RandomVertebrate/raspi-looper
• Owner: RandomVertebrate
• Created: 2020-12-25T21:40:04.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2023-12-30T18:51:25.000Z (11 months ago)
• Last Synced: 2024-08-02T05:11:54.410Z (3 months ago)
• Language: Python
• Homepage:
• Size: 156 KB
• Stars: 91
• Watchers: 2
• Forks: 16
• Open Issues: 4
• Metadata Files:
  • Readme: README.md

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README

        
# raspi-looper

Simple 4 track looper for Raspberry Pi. Uses pyaudio.

## Hardware Setup

### Components

- Raspberry Pi

- USB sound card

- 8 Buttons

- 8 LEDs

- Audio jacks, wires and connectors to taste

### Connections

- Buttons and LEDs connect to GPIO.

- Sound card plugs into full-size USB port on Raspberry Pi.

- Looper input goes to sound card input AND to looper input 1 ("LIVE").

- Soundcard output goes to looper output 2 ("LOOPS").

See GPIO connections table and wiring diagram.

## Software Setup

### Basic

- Install pyaudio

- Uninstall pulseaudio

- Download this repository

- Set main.py to start on boot (run main.py as sudo)

### Optional/Troubleshooting

- Uninstall unnecessary software, disable GUI (speed up boot time)

- Adjust sound levels in alsamixer (if signal is too quiet/loud)

- Turn off WiFi (reduce noise/interference)

## User Manual

### Begin Session

- Press Track 1 Record Button to start looping. Track 1 will start recording.

- Press Track 1 Record Button to stop recording. Track 1 will now loop.

### During Session

- Press Record Button to arm a track for recording or overdubbing. Recording will start on the next loop of Track 1.

- Press Record Button again to stop recording or overdubbing.

- Press play button to mute or unmute track.

- While track is playing, hold Record button to undo last overdub.

- While track is muted, hold Record button to clear track.

### After Session

- Hold Track 1 Play Button to start new session.

- Hold Track 2 Play Button to enter 'developer mode' (exit the looper script).