Here is some advice from a couple of founders that ran successful crowdfunding campaigns:
Matt Oscamou, CEO of Frontier Bites shared at a recent Bootstrappers Breakfast meeting that he ran a successful kickstarter campaign $30K for pay for new packaging artwork and initial order. He found it useful as a way friend and family could help support his effort but he had little donations from strangers.
Mark Palaima, Distinguished Engineer at Avagent, hit their funding goal in the first 5 hours. Most of their donations came in the first two days and spent a great deal of time on a marketing road trip hanging out at tech bars showing off the product. See more about their campaigns at Avegant Glyph Kickstarter Surpasses Stretch Goals Before They’re Made, Try the Glyph in a City Near You
At a recent SV Hardware Startup to Scale meetup, Noah Dentzel, CEO of Nomad Goods emphasized the importance of getting the word out on your campaign. He offered the tip of writing article for press and bloggers. His goal is to make their job easier for them. He also took advance of holes in press schedules – no shows or other delays. His biggest piece of advise is to go for it, ask, knock on the doors. His biggest surprise was learning all the logistics about shipping and delivering products oversea. He knows that shipping to S and Russia cost $0.90-1.10.