{"guid":"998e3c97-7874-44ed-ad77-b9ac1df0bc8c","title":"Chinesische Geigerzähler an Home Assistant anbinden","subtitle":null,"slug":"froscon2026-3667-chinesische_geigerzahler_an_home_assistant_anbinden","link":"https://programm.froscon.org/2026/events/3667.html","description":"Billige Geigerzähler können (fast) ohne Löten mit der offenen RadPro-Firmware ausgestattet und mit einem ESP32 an Home Assistant angebunden werden.\n\nNach einem prinzipiellen Überblick über ionisierende Strahlung und unterschiedliche Typen von Detektoren werden einige günstige Modelle mit Geiger-Müller-Zählrohr vorgestellt.\n\nDie Modelle GC-01 und GC-03 von Fnirsi lassen sich ohne Lötkolben  mit der \u003ca href=\"https://github.com/Gissio/radpro/\"\u003eRadPro-Firmware\u003c/a\u003e  flashen (Achtung: nur die Originale - inkompatible Produktfälschungen sind weit verbreitet!). RadPro bietet neben erweiterten Menüfunktionen auch Datenexport über USB an. Ein ESP32-S3-Board mit \u003ca href=\"https://github.com/SunboX/radpro-wifi-bridge\"\u003eradpro-wifi-bridge\u003c/a\u003e nimmt die Daten entgegen und published sie via MQTT an Home Assistant. Gesamtkosten (je nach Modell und Händler): 50-90€.\n\nSpoiler: Hintergrundstrahlung ist sehr langweilig und es gibt ein gut ausgebautes Netzwerk von Sensoren. Und wer mit dem Geigerzähler zum Flohmarkt geht (Uranglas, Radium/Tritium-Uhrzeiger), erntet vielleicht mehr als nur komische Blicke.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"deu","persons":["Georg Lukas"],"view_count":105,"promoted":false,"date":"2026-08-15T17:30:00.000+02:00","release_date":"2026-08-15T00:00:00.000+02:00","updated_at":"2026-08-21T20:30:05.359+02:00","tags":["3667","2026","froscon2026","It’s the end of the world as we know it – Prepping for crisis with FLOSS","HS 4","froscon2026-deu","Day 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