Sorry Brian, my ignorance of electronics is so near to immaculate I
can't help with one for you. But for sighted people it can be easily
with a DIY cloud chamber if you can buy dry ice and isopropyl alcohol.
Video at CERN link below.

I've read of people doing it without dry ice by evaporative cooling but
can't speak to that.

https://home.cern/news/news/experime...-cloud-chamber



On 06/04/2021 15:45, Brian Gaff (Sofa) wrote:
So who is going to design a cosmic ray detector we can build ourselves in
the garden?
Brian



--
Robin
reply-to address is (intended to be) valid