Observed arrival · 2026-10-01

ESPsoup turns an ESP32-C5 into a pocket radio scanner

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Editorial interest 84/100 Selection signal · not a rating of the site

A free web app uses an ESP32-C5 board to scan 2.4 and 5 GHz radio traffic and display spectrum views and decoded public broadcasts.

Landing page captured for the 2026-10-01 issue.

For: ESP32-C5 owners exploring nearby radio traffic
Worth noticing: A round-robin scan takes about 12–15 seconds; results can be exported as CSV or JSON.

Field notes

The app organizes its functions into a Kitchen dashboard, a live Pot instrument, decoder Recipes, and a Pantry for settings and tools. Its stated measured coverage is limited to parts of the 2.4 and 5 GHz bands, and the page explicitly names several familiar signals it cannot receive. The project identifies its maker as Peter Holzhauser in Stuttgart, Germany.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

◉HumanPersonal, local, civic, or handmade

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