Since buying my HobbyCNC driver kit two years ago, I have noticed eBay is awash with chinese bipolar driver boards for the same price (or cheaper), fully assembled with optical isolation and other features lacking in the HobbyCNC kit. Am I correct in assuming that HobbyCNC filled a niche in the market before mass production came along and now kit building is so yesteryear?
Having said that, I built the HobbyCNC EZ driver board and successfully controlled steppers with it, and I am not sure where to compare reviews with the imported boards.