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Building a Cosmic Ray Detector Part 3: Completion and Testing

Andrew Back
Open source (hardware and software!) advocate, Treasurer and Director of the Free and Open Source Silicon Foundation, organiser of Wuthering Bytes technology festival and founder of the Open Source Hardware User Group.

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September 16, 2021 15:11

Several years ago, I built two of the Cosmic Watches from the MIT design ( They were abject failures.
I managed to build the PCBs, and the computers and electronics worked fine it was the detectors that defeated me. I was going to try again, but the thought of putting out another $200 for the very fragile detectors put me off.
Is there a surface mount detector available? If so, I would try again

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May 27, 2021 07:00

Thank you for the article!
Russian-speaking users are interested and discuss technical features here:

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