We have a saying on this side of the pond "You gets what you pays for" and I would not trust any stepper drivers from Hong Kong. Good luck with a new board from a different supplier
John Guenther 'Ye Olde Pen Maker' Sterling, Virginia On Sat, 2010-05-01 at 15:27 +0100, Ian W. Wright wrote: > Hi, > > I foolishly bought one of the 4-axis driver boards based on > the TB6560 chip from China. I'm now on the third board > having had to send two back as defective and now this third > board is also defective however, I'm now so peed off with > the whole thing that I decided I would try to either repair > the board, or just use the working parts and supplement it > with separate drivers. The fault is on the Y-axis driver > which will only drive the motor at a pitifully slow speed > as, at any other settings, the motor just sits and quivers. > The board has four identical drivers on it, each optically > buffered and consisting of a TB6560 chip and a handful of > surface mount components and capacitors. Each output also > has additional diodes to ground. Three of the drivers work > fine, but not the Y-axis. I have changed the TB6560 chip for > a new one but the problem still persists and so I guess the > fault must be somewhere else. Does anyone have any > experience with this chip or these driver board who could > maybe point me in the right direction to find the fault? The > strange thing is that all the boards have had a similar > problem with the Y-axis ( the first board also had the same > problem with the Z-axis ) and yet there doesn't appear to be > any difference in the PC layout between the axes. This is > the board http://tinyurl.com/2d6oph9 . I've learnt my > lesson now, I'll not buy another board like this and > definitely won't deal with this seller again as I went > through quite a series of emails where they were trying to > deny any responsibility for the faults. Thanks, > > Ian > ____________________ > Ian W Wright > Sheffield UK > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
