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Rob Oudendijk edited this page May 20, 2019 · 52 revisions

Welcome to the bGeigie Nano Kit wiki! This documentation will guide you through the process of building, mounting, and using your Safecast bGeigie Nano radiation sensor.

You can navigate through the documentation using the sidebar menu.

For the latest commits, see

Contribute to the Safecast user community on GitHub! You can revise and add to the documentation using markdown syntax.

Issues and support

Both are handled at the Safecast users group at Google Groups

How to Prepare for Success

While we’ve designed our kits for everyone, it’s helpful if you’re familiar with a few concepts beforehand.

One of these is through-hole soldering, a process for attaching surface mount components to a circuit board. This process involves temporarily attaching components to the board with paste, then baking the board to cement the parts together. There are many soldering tutorials available on the Internet. You may want to start with the tutorial created by Instructables.

Another concept to be mindful of is polarity. Some electronic components are designed to work with the current flowing in one direction only, while others can work with current flowing either way. Inserting a polarized component the wrong way will prevent the device from working properly, but in some cases, it could also damage components. It's important to make sure you've oriented the components correctly for this reason.

You may also find it helpful to refer to a glossary of electronics terms as needed.

You can order a Safecast bGeigie Nano kit at

You can also choose to buy all of the parts yourself, and then follow the instructions on this wiki to assemble your kit.


If you get stuck, try checking this wiki documentation. You can also get help from these sources:

Other Helpful Links

  • Nano Landing Page - A catch-all landing page for all Safecast information related to the bGeigie Nano.
  • Safecast API - The kit uses the Safecast API to add your readings to the Safecast dataset. Data can be submitted through an Apple audio cord or optional XBee (Wifi or BLE-enabled) chip, from an SD card via the API menu, or an emailed log. For more information, see "Sean's Useful Data".
  • Safecast App - The mobile app is currently available for iOS only. It is built on top of Geiger Bot, a radiation detection, mapping, and sharing app. To learn more about the app, see the Geiger Bot documentation.

If you need further help after reviewing these links, please contact us at