The 2nd-in-a-row class will be held at THS house, as usual on August 22nd, 19:30-22:30: http://www.tokyohackerspace.org/en/book/how-to-get-there
See this for more insights on the history of this kit:
This kit is a THS project in collaboration with SafeCast. Once you buy and build your device, you own it (hardware and software) and the data it produces. You can opt-in to have your data logged to the THS account on Pachube (for free) and have it available to the public (for free).
The kit consist of 3 parts: motherboard (Freakduino), daugtherboard (NetRAD shield) and radiation sensor (SBM-20 GM tube). If you have any of these, you can use yours, but we'll have to make sure they are similar enough.
Once assembled, tuned and tested you just connect it to a DHCP-enabled LAN connected to the Internet and it will upload data to Pachube data aggregation service (e.g. see http://pachube.com/feeds/29600)
3,000: Freakduino MB
3,500: NetRAD shield
4,500: SBM-20 GM tube
(JPY11,000 for the full kit)
Workshop fees (in addition to kit):
JPY500 for THS members (in good standing)
JPY1,500 for all others
Kit does not include box, mini USB cable, LAN cable, PC (for debugging).
Some English required, Japanese optional.
Approximate build time 60-90min (for people with soldering experience).
5 people maximum (I'll select a homogeneous group by skills, if there are more applications).
Bring a laptop if you want to set-up control software (not a requirement).
Related software and docs: