SparkFun Qwiic WAV Trigger Pro

The Qwiic WAV Trigger Pro is the latest evolution of the line of high-fidelity polyphonic audio players!

The Sparkfun Qwiic WAV Trigger Pro is the latest evolution of high-fidelity polyphonic audio players. The WAV Trigger Pro improves on the previous versions with a more powerful processor, enhanced MIDI processing – including velocity switching and multi-timbral support – and MIDI USB Device and MIDI USB Host support (see note), all in a smaller 1.75in. x 1.5in. footprint!

It supports up to 4096 uncompressed 16-bit, 44.1kHz mono, and stereo WAV files matching CD audio quality. The WAV Trigger Pro supports polyphony and can play and mix up to 24 tracks simultaneously and independently with exceptionally low latency (2-3ms typically). Control track playback via eight programmable trigger inputs, I2C (Qwiic), or MIDI (USB or Serial UART). The board can function as both a USB MIDI device and host, meaning if the WAV Trigger Pro has power in USB MIDI Host mode, it can supply up to 500mA@5V to a connected MIDI device over USB-C, allowing for USB MIDI control with no computer required!

Audio output is over two unbalanced channels (Left & Right). These audio outputs are only routed to a 0.1′-spaced plated through-hole (PTH) connector, so some soldering is required.

The WAV Trigger Pro also includes a new feature: Presets! Presets are spreadsheet (.csv) files that describe up to 8 actions per MIDI note based on channel and velocity. These actions can toggle an independent track with specific gain, balance, attack, release, and pitch. This allows multiple sounds to be mixed during the performance. Assigning action velocity ranges allows for velocity switching per note. Create preset files using a spreadsheet program (Excel or Google Sheets™), then load them onto a microSD card.

Note: Using the WAV Trigger Pro as a MIDI USB Host requires uploading alternate firmware and adjusting the solder jumpers. Refer to the Hookup Guide for more information.

Features & Specificiations

• Support for up to 4096 uncompressed 16-bit, 44.1kHz mono and stereo WAV files – CD quality
• Polyphonic – Play and mix up to 24 tracks independently and simultaneously with independent pitch control
• Trigger-to-sound latency: 2-3msecs (Typ.), 5msecs (Max)
• Direct Line Level 2.1-V RMS Output
• True Line-Level Stereo Output
• MIDI-USB Support
  • Functions as both MIDI-USB Device and MIDI-USB Host
• MIDI Control for up to 8 Independent Actions per note
  • Route tracks to any combination of outputs
• 8 Individually Configurable Trigger Inputs
  • Can be inverted (active LOW or HIGH)
  • Can be set to edge, latched, or level-sensitive
  • 3.3V tolerant
• Serial Console Interface (3.3V Only)
  • Connected to STM32’s TX/RX pins
• Qwiic (I2C) control support through Arduino Library

Resources

Guides

• Hookup Guide
• WTPro Overview
• WAV Trigger Pro Demo #1 – Keys
• WAV Trigger Pro Demo #2 – Percussion

Datasheets

• STM32H
• PCM5100A

Hardware

• Schematic
• KiCade Files
• Board Dimensions

Other Documentation

• GitHub Hardware Repo
• Firmware Downloads
• Qwiic Info Page

Package Contents

• 1x SparkFun Qwiic WAV Trigger Pro