# Pocket radio example connects an ESP32-S3 to Cloudflare over WebRTC

The example sends audio and telemetry from an ESP32-S3 to browsers over Cloudflare WebRTC, lets one listener control it, and is offered for people and their agents to build from.

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Current time (UTC, cached as of): 2026-11-10T06:59:00.000Z
Query date (America/Los_Angeles): 2026-11-09

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Source: korinne · Published 9/23/2026, 11:00:11

korinne says a pocket radio example, made for people and their agents to build from, connects an ESP32-S3 to Cloudflare over WebRTC. It sends audio and telemetry to browsers, one listener can control it, and it could be adapted for a camera or robot. Documentation is in Cloudflare’s [Realtime SFU example for embedded devices](https://developers.cloudflare.com/realtime/sfu/examples/embedded-devices/).

Tags: Cloudflare, WebRTC, ESP32-S3, Embedded devices

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