WVR Audio Development Board

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WVR is a next-generation sample player powered by an ESP32. WVR features 8GB of memory and an advanced Web GUI where users upload audio and manage configuration and firmware. WVR is Arduino compatible and open-source, and fits on a common breadboard, with room to access all the pins.

WVR offers users a wide range of control over the device via the Web GUI, so the majority of embedded audio uses can be setup without writing custom code. WVR responds to MIDI input, or to events on the GPIO pins.

  • Playback up to 18 stereo wav files simultaneously, with ~1ms latency
  • Configurable voice stealing algorithm to handle 18+nth triggers.
  • Sample-accurate looping, with configurable loop start and end points
  • Accepts virtually every audio file format, at any resolution, and any size, including wav, mp3, ogg, acc, flac, pcm, aiff, and many more
  • Upload audio, map samples to MIDI notes, configure pin functionality, apply FX, manage firmwares, etc, all over WiFi
  • Holds over 12 hours (8 GB) of stereo audio, at 16bit 44.1kHz resolution Optically isolated MIDI input, provides to-spec MIDI input implementation without any additional circuitry
  • 14 GPIO pins, 8 of which can be analog inputs, and 4 of which can be capacitive touch inputs, plus the many peripherals available on the ESP32 .
  • Pins can be set to start/stop samples, change bank/voice, turn WiFi on/off, mute/unmute, via Web UI
  • Write firmware in Arduino, and upload over wifi. Stores multiple firmwares onboard, selectable via the Web UI.
  • Receive MIDI over WiFi from a DAW via Web MIDI in the Web UI
  • Create multi-sampled instruments, with velocity layering easily in the Web UI
  • Bulk upload sounds, or multi-sampled instruments
  • Backup and restore the contents of memory including configuration (handy for mass production) via Web UI
  • On-board Ultra Low Power (ULP) co-processor means WVR consumes only ~10uA in sleep mode

WVR Audio Development Board Product Help and Resources

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

2 Programming

Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Cullen Fluffy Jennings / about a year ago / 1

    Really sad there is no schematic for this or even saying what the chips are.

    • Member #794819 / about a year ago / 2

      It's all there. Go to Documents > Github

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