Timelab organized by Toon Nelissen (aka Tony the pony ;-) ) and it was great. 18 people working on great ideas the whole weekend. It was great, lots of fun and a bit cold, but we worked hard so we didn't freeze.
If you want, you can have a look at the other pictures taken at the jam on the Timelab's Facebook page.
Looking forward to the next ARDUINOJAM.