From the event site:
“Startup Weekend is a 54-hour event where developers, designers, marketers, product managers and startup enthusiasts come together to share ideas, form teams, build products, and launch startups! Beginning with open mic pitches on Friday, attendees are encouraged to bring their best ideas and inspire others to join their team. Over Saturday and Sunday, teams design and develop business plans while constantly streamlining their startup vision. On Sunday evening, teams demo their prototypes, listen to judges’ feedback and win prizes. Bay Area Makers Startup Weekend will be dedicated to makers and hardware. We expect to have around 40 ideas pitched and around 15 ideas finally being taken forward over the weekend. We will provide hardware, prototyping facilities and tool kits to get the participants started. If you are a maker, hacker, designer, or just interested in hardware, come to Bay Area Makers Weekend to make connected devices, wearables, internet of things or just plain old fashioned pure hardware products!”
Information and registration here.