The eBook was released on Monday, and coupon codes to backers were sent out on Tuesday. After a glitch with the first batch of coupons, the second batch was sent out and seems to be all good.

The book assumes you have some knowledge of Perl, but little knowledge of electronics or the Raspberry Pi. It goes through the tools you’ll need, walks through the basic setup of the RPi, and then gets into programming. Starting out with blinking an LED, it later gets into facial recognition and controlling a garage door over the web.

I had hoped that we were releasing on time, and completely forgot that we originally promised a date in August, not September. Oops. Well, a month late still isn’t bad for a crowdfunded project.

Expecting to get some of the coupon codes caught in spam filters. That’s just the nature of sending out a lot of emails that say “here’s your free coupon code!”. Spammers ruin the Internet. Backers, if you don’t see your code at this point, check your spam filter, and then message the campaign directly if you still don’t see it.

This is the first time I’ve done a crowdfunded campaign that worked out. It’s a modest start–not about to retire on that money–but it’s good to have a track record. I tend to be picky about projects I back, and an established track record from the campaign members is one of the things I look at. I expect a lot of other people do the same. I’ll likely have other projects in the future, and this is a good stepping stone.