SparkFunSparkFun is an online retail store that sells the bits and pieces to make your electronics projects possible. Whether it's a robot that can cook your breakfast or a GPS cat tracking device, our products and resources are designed to make the world of electronics more accessible to the average person. In addition to products, SparkFun also offers classes and a number of online tutorials designed to help educate individuals in the wonderful world of embedded electronics.

Seeed StudiosOPEN HARDWARE FACILITATOR

Seeed Studio is an open hardware facilitation company based in Shenzhen, China. Benefiting from local manufacture power and convenient global logistic system, we integrate resources to serve new era of innovation. Seeed also works with global distributors and partners to push open hardware movement.

We design modular electronics for quick prototyping and small scale projects, which could be found at Bazaar. It also carries inventories from community innovators, we help people make, distribute their designs and collect the revenue. It’s a win-win situation and taking a shape towards an ecosystem. By working with us, innovators could focus on the designs, provide better support to the user and promote the product. Seeed Studio or similar service provider could get more traffic and bring up other product sales.

ARDUINO

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and

software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or

environments.

And check out their FAQ which is really helpful:

DIY Drones

AND the store (store.diydrones.com)

And some other community open source hardware / software websites worth checking out when there's internet

again:

github.com, adafruit.com, littleBits.com,