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Card 941 of 9972026-09-07 issue

Observed arrival · 2026-09-07

VolAnti Hears the Drone Before You Do

volantitech.com Observed source
Editorial interest 86/100 Selection signal · not a rating of the site

An open-source acoustic detector that identifies drone propellers without relying on radio signals.

Landing page captured for the 2026-09-07 issue.

Field notes

VolAnti combines four microphones with an ESP32-S3 and a harmonic-comb detector, then exposes detector score, threshold, fundamental frequency, and frame timing in a live simulator. The page documents a 104.2-metre roadside detection and reports 29.4 ms as the worst frame across 1,938 bench-test frames against a 32 ms budget. Its design files include printable enclosure parts, Gerbers, and a bill of materials, while the stated alert behavior deliberately excludes jamming and other countermeasures.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use

One card from the complete issue

A Record Press With a 0.4 mm Nozzle

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volantitech.com

Landing page observed 2026-09-07. The live site may have changed.