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Safecast

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Safecast
Founded2011; 13 years ago (2011)
FounderSean Bonner, Joi Ito and Pieter Franken
Focusopen citizen science
Location
Methodvolunteer based data collecting, open hardware development, online data network
Key people
Sean Bonner, Joi Ito, Pieter Franken
Websitesafecast.org

Safecast is an international, volunteer-centered organization devoted to open citizen science for the environment. Safecast manages global open data network for ionizing radiation monitoring and was established shortly after the Fukushima Daiichi nuclear disaster in Japan following the Tōhoku earthquake on 11 March 2011.

Safecast team, together with help of International Medcom, Tokyo Hackerspace and other volunteers designed various devices for radiation mapping. Including bGeigie and bGeigie Nano for mobile applications (car-borne and walking measurements) or fixed stations called Pointcast.

All data are collected via Safecast API and presented on publicly available interactive Safecast Tile Map.

bGeigie Nano

Safecast bGegie Nano is a portable radiation detector equipped with Geiger-Mueller tube type detector, built-in GPS and logging to microSD card.

  • bGeigie Nano with closed case
    bGeigie Nano with closed case
  • Safecast bGeigie Nano opened
    Safecast bGeigie Nano opened
Screenshot of Safecast Tile Map website with data visualization

bGeigie Nano is available as a kit, so user needs to know how to solder to built it from supplied parts. The kit can be purchased from the Kithub product page. The device was developed in collaboration with International Medcom Inc. and shares some parts with their Inspector Alert™ detector - according to Safecast Github page "bGeigie Nano is a lighter version of the bGeigie Mini using an Arduino Fio, a GpsBee, an OpenLog and an Inspector Alert geiger counter. The aim is to make everything fit in a Pelican Micro Case 1040". Final version of bGeigie is placed inside smaller Pelican Micro Case 1010, features pancake LND 7317 Geiger-Mueller tube type detector and GPS, possibly expandable with Bluetooth module. The mode switch offers choice between geotagged radiation logging (data saved to microSD card) and measuring without GPS - showing also Bq/m2 (Cs137) values. Main unit can be taken out of case for α-, β-detection, for careful use as surface contamination spot meter.

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