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Personal Wireless Grid - Audio Adapter Blueprint Pack

$100K
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SKU
PWG-BP-AUDIO

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A 3.5 mm audio jack, anywhere. A wired microphone or line source streams over Wi-Fi to your PC as a local audio input device.
First to market

Publicly online since 2010 · U.S. patent applications since 2012 · inventions offered since 2014. The work of Christopher Gabriel Brown, independently documented.

First posted: · Last updated:

Personal Wireless Grid makes wired peripherals cordless. Fit a small adapter to any wired device — a USB drive or printer, a bench instrument, an audio source — and it joins your Wi-Fi. Your PC still sees it exactly as if it were plugged in locally; the cable is simply gone. Put your gear where you need it, not where its cord reaches.

A 3.5 mm audio jack, anywhere — on your personal PC. A microphone in the next room, a line-out from a bench instrument, an intercom feed: each one streams to your PC as a normal local audio source.

In plain English

Plug a wired audio source (microphone, line, mono jack) into this adapter. The adapter digitises it and streams it over Wi-Fi to your personal PC, where it appears as a local audio device that any program can listen to or record from.

In technical terms

An ESP32-C3 paired with an inexpensive I²S codec (WM8731-class) that samples the wired audio path at 8 kHz / 16-bit mono and frames PCM out over the PWG protocol. The host opens a local TCP port; pairing it with a virtual-audio shim (VB-Cable on Windows, PulseAudio module-pipe-source on Linux) presents it as a system input device.

  • ESP32-C3 + Wi-Fi.
  • I²S audio codec (WM8731 reference).
  • 3.5 mm TRS input jack with optional bias for an electret mic.
  • 24AA02E48 ID EEPROM.

What is included (deliverables)

  • KiCad schematic.
  • PCB layout specification.
  • ESP32-C3 PWG-mode firmware source (I²S capture + PWG client).
  • Bill of materials.
  • Quick-start guide for VB-Cable (Windows) and PulseAudio (Linux).

Design target

8 kHz 16-bit mono stream with under 150 ms glass-to-glass latency on a local Wi-Fi network. Performance values are design targets, not guarantees.

How to order

Email- and postal-order only — no phone, no brokers. USA-based buyers, USD only. Delivery is by encrypted email link upon payment confirmation.

  • Email: christopher@cri-one.com · crioneaka@outlook.com
  • Postal: Christopher Gabriel Brown · 1341 Wellington Cove · Lawrenceville, GA 30043-5255 · United States

Personal Wireless Grid is patent pending (U.S. Utility Application No. 19/717,706, filed 06/24/2026, inventor: Christopher Gabriel Brown; the same patent application also covers the related UniPhi product line). Purchase grants use of the software and design files included in this listing for the buyer’s own build — it does not transfer, assign, or license the underlying patent-pending invention. The patent and all derived rights are retained by the inventor.

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