Geo01005’s RepRap Ideas details some of his work around running a repstrap using EMC2 from a couple years ago. He’s documented some of his work around the hot-He also has a YouTube channel.
Andrew Angellotti is founder of spingarage LLC has a new blog that’s looking pretty interesting. Here’s the first part of a tutorial on brushless motor control.
Tim has a great collection of posts on repstrapping over at BotHacker.