Geiger cape is working design that registers radiation counts from background sources and test sources.
BOM cost for the Geiger Cape is well under $60 if you exclude any fancy geiger tubes or bring your own.
Everyone in this project contributions:
* Matt Ranostay - QA Tester/HW reworker, backup HW design, demo application design, Presentation Giver at ELCE 2012
* Pantelis Antoniou (TI Consultant) - Capebus support added for Geiger Cape
* Dimitris Sapountzakis - Primary hardware design
There are few board erratas that exist. These mostly have to with protecting users from toasting the beaglebone, and some package sizing. But this is a completely working design with multiple geiger tubes.