> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# WVR Audio Development Board

**Type:** Product page · **SKU:** DEV-21307 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/wvr-audio-development-board.html ([markdown](https://core-electronics.com.au/wvr-audio-development-board.html.md))

WVR features 8GB of memory and an advanced Web GUI where users upload audio and manage configuration and firmware...

## Pricing

- **Price:** $99.50 (inc GST) — $90.45 AUD, exc GST
- **Quantity discounts:** 5+ $87.75 (exc GST) · 25+ $85.93 (exc GST) · 100+ $82.31 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DEV-21307:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DEV-21307:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

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.

### Features

- 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 resolutionOptically 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

### Documents

- [GitHub](https://github.com/marchingband/wvr#readme)
- [Support Forum (Google Group)](https://groups.google.com/g/wvr-audio?pli=1)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/D/E/DEV-21307-1.jpg)