Community-based Investigation of Cosmic Radiation

Cosmic radiation are high-energy particle rays produced in outer space which constantly impinge on the Earth's atmosphere. These particles can produce particle showers when they interact with atoms in the upper atmosphere.

The MuonPi Project aims at investigating these cosmic showers by establishing a network of low-cost RaspberryPi-based particle detectors.

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Thanks to many open-source online platforms we can share our data, documention, hardware, and code with you!

Live Map

A map with live detector shower tracking will be implemented soon!

Live Map


Data is important and Grafana is the perfect tool to display a multitude of live detector data



Extensive documentation about the project can be found in our Wiki



The Raspberry Pi shield and other drawings can be found in EasyEDA, an open source online design tool



All of our software is published on GitHub


Join the Endeavor

While a single MuonPi detector already allows the investigation of cosmic ray muons, a wide-spanned network of the detector units can resolve the entire particle shower geometry and unveil the physics of cosmic radiation.

Are you interested in joining the MuonPi team? Find out how you can contribute.


Latest News

Time resolution down to 50 ns achieved

25 April 2020

First time correlation measurements between two detector units reveal a time resolution down to 50 ns...

Release of version 1.1.2 of the muondetector software

27 April 2020

Version 1.1.2 of the muondetector software has been released. Among other features, the new version includes more satellite information in the GUI...

Release of Cosmic Detector Unit 3.0

27 September 2020

Version 3.0 of our Cosmic Detector Unit (CDU) board has been release! Find out about it's new features and bugfixes...