The WAV Trigger is a unique high-fidelity polyphonic audio player with surprising capabilities. Supporting up to 2048 uncompressed 16-bit, 44.1kHz wav files – the same quality as an audio CD – the WAV Trigger can play and mix up to 14 stereo tracks simultaneously and independently, with very low latency. Tracks can be controlled via 16 programmable trigger inputs, or by using a native serial control protocol or even MIDI.

Trigger inputs can be connected directly to switches and buttons, or to digital outputs from sensors or another microcontroller. Alternate functions can be specified using a free cross-platform GUI application, and allow triggers to play sequential or random tracks, pause and resume groups of tracks and even control volume. An Arduino library allows for complex serial control like real-time mixing, starting multiple tracks in sample-sync and smooth cross-fading between tracks.

On-board sample rate conversion allows for smoothly changing playback speed/pitch from 0.5x to 2x. in real-time.

MIDI allows you to use the WAV Trigger as a polyphonic sampling synthesizer to play your own sounds from any MIDI keyboard controller. MIDI Channels and Note numbers are mapped to track numbers, and MIDI Controllers adjust volume as well as attack and release times. MIDI Program Change is supported to switch between up to 16 banks of 128 sounds. The WAV Trigger audio engine even implements, pitch bending, voice stealing (oldest playing voices are used for new MIDI Notes when all 14 voices are being used), note attack (fade-in), note release (fade-out) and latency averages 8 ms.

The WAV Trigger supports both SDSC (up to 2GB) and SDHC (up to 32GB) type microSD cards.

Check the link in the documents below to keep up with the latest Firmware updates!

Note: This product is a collaboration with Robertsonics. A portion of each sales goes back to them for product support and continued development.

Features

Supports up to 2048 uncompressed 16-bit stereo WAV files at 44.1kHz – CD quality

Polyphonic! Play and mix up to 14 stereo tracks independently and simultaneously

Sample-accurate starting and playback of up to 14 parallel stereo tracks

Trigger-to-sound delay: 8 msecs typ, 12 msecs max

MIDI control: Velocity-sensitive triggering of up to16 banks of 128 tracks

Real-time playback rate control and MIDI Pitch Bend

Pause and resume individual or groups of tracks. Multiple random trigger ranges

True line-level stereo output: 2.1V RMS ground centered, 100dB SNR

On-board mono audio amplifier and speaker connector: 2W into 4 Ohms, 1.25W into 8 Ohms

16 trigger inputs are individually adjustable for contact closure, 3.3V or 5.0V control

Trigger inputs can be individually inverted, and/or set to be edge, latched or level sensitive

Volumes adjustable from +10dB to -70dB in 0.5dB increments

Firmware volume fades (attacks & decays) and cross-fades

A dedicated “Play” status digital output pin

3.3V and 5.0V output pins

Extensive serial control. Arduino library available. Pin compatible with SparkFun FTDI Basic

The Pi-DACZero feature the same great Texas Instruments PCM5122 DAC as the original and respected IQaudIO.com Pi-DAC+, with Linux drivers built in to Raspbian an most common audio applications. No kernel recompilation needed.

Raspberry Pi Zero compliant accessory

Full-HD audio – up to 24-bit/192kHz playback

Integrated hardware volume control (via ALSA), full 2v RMS

Class leading audio; 112db SNR, and -93db THD

Audiophile TI Burr Brown 32-bit/384kHz DAC (TI PCM5122)

Advanced ESD protection

Uses the digital I2S audio signals to reduce CPU load over USB audio solutions

Raspberry Pi Zero powered, no external power requirements

Industry standard audio quality Phono/RCA connectors

Support for optional Rotary Encoder 3pin header

Fully tested Raspberry Pi accessory

Designed and manufactured in the UK

Headphones daughter board for the PI-DACZero

Designed to deliver the best audio performance from the Raspberry Pi A+/B+/RPi2/3, fit within the Pi’s form factor and provide additional access to several of the Pi’s 40way I/O signals allowing easy addition of IR sensors, Rotary Encoder or i2c devices (such as OLED screens) etc.

The Pi-DigiAMP+ takes everything we’ve learned from the previous Pi-AMP+ and Pi-DAC+ combination, shrinks it down and reduced the overall system cost by around £25!

We have used the latest Texas Instruments chipset (TAS5756m) to deliver awesome performance from a single HAT board. As with our other products you can be assured that the Linux driver support is already built-in to Raspbian Linux (using the same device drivers as the Pi-DAC+) and supported by the many software audio packages already on the market. RuneAudio / Volumio / Moode / PiCorePlayer / PiMusicBox / OpenELEC and others. The IQaudIO Pi-DigiAMP+ easily supports 24-bit / 192kHz file formats but is equally at home with lower quality MP3s bringing your music alive sonically.

Please note that The Pi-DigiAMP+ uses GPIO22 as amp-mute and when powered on is in mute state, examples are in the user docs and many software releases already support the Pi-AMP+ in the same way.

The IQaudIO Pi-DigiAMP+ connects easily to the Raspberry Pi and provides up to 2 x 35W stereo output to speakers.

The IQaudIO Pi-DigiAMP+ Features:

HAT compliant accessory; EEPROM, mounting holes

Full-HD audio – up to 24-bit/192kHz playback

Up to 2x35w of crystal clear amplification

No soldering required to your Raspberry Pi

Integrated hardware volume control (via ALSA)

Powers the Raspberry Pi from the Pi-DigiAMP+ power input

Linux driver support already delivered within Raspbian

AMP can be enabled / disabled via Raspberry Pi’s GPIO22

Advanced ESD protection

Uses the digital I2S audio signals to reduce CPU load over USB audio solutions

Fully built and tested Raspberry Pi accessory

Designed and manufactured in the UK

This tiny audio amplifier is based on the Texas Instruments TPA2005D1. Its efficient class-D operation means low heat and long battery life. It can drive an 8-Ohm speaker at up to 1.4 Watts; it won’t shake a stadium, but it will provide plenty of volume for your audio projects.

The fully-differential inputs are safe for floating audio signals such as from our MP3 Shield, and can also be connected to ground-referenced signals as well. A shutdown input is provided to save power when the amplifier is not being used, and a solder jumper and header are provided to connect a volume-control potentiometer (not included).

Note: The amplifier’s class-D design outputs a 250kHz PWM-like signal that is restored to an analog voltage in the speaker’s coil. This is what makes the amplifier so efficient, but because of the switching frequency, you should keep the amplifier as close to the speaker as possible to minimize possible interference.

Features

Extremely efficient class-D amplifier

1.4W into 8 Ohms

2.5V to 5.5V supply

Fully differential audio inputs, can be ground-referenced as well

Shutdown input with pullup and LED-follows-shutdown circuitry

PTH pads provided to change gain resistors if desired (see datasheet for details)

Solder jumper and header allow addition of a 10k volume control potentiometer (not included)