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Card 151 of 9972026-09-07 issue

Observed arrival · 2026-09-07

ClearSkies Is Putting Radon on the Neighborhood Dashboard

clearskiesus.org Observed source
Editorial interest 87/100 Selection signal · not a rating of the site

A community project in Iowa distributes low-cost sensors that measure indoor radon every 10 minutes and stream the readings online.

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

Field notes

The project describes a distributed sensor network rather than a one-time testing service. Its stated hardware chain runs from an RD200 pulsed ion-chamber sensor through an ESP32 and ESPHome firmware to Firebase Realtime Database, with readings reported every 10 minutes. The page says each unit costs $124 to build and is given out at no charge through donations. The public device panel is illustrative; access to actual device data appears to require a login.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
LoginAccess appeared gated
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use
HumanPersonal, local, civic, or handmade

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clearskiesus.org

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