I thought these were big enough...they're nice steppers! Now, I have 1 more printer to disassemble, before I'm done. Hopefully I'll find 2 that match...otherwise I'll make do with what I have, and keep my eyes open for an HP laserjet 1, 2, or 3...they all used the same big stepper.
As to the board, I had intended to homebuild one. The circuits look simple enough, and the chips are commonly available -- can't hurt to try. As I understand it, you build 1 board for each motor (or 3 basically distinct circuits on one board), so I can build pretty much whatever I'd like.
While buying a board might be more efficient, it's definitely not as much fun!
BTW: You posted a link to eBay...these printers that I'm disassembling have cost me $25, and one is being resold to a local garage for $20. My out of pocket expense will be $5 for 4 steppers...not too bad! Definitely better than the $60 opening bid on that auction...and especially considering my budget.
-- Chuck Knight |