1 axis tb6560 any good?

[bobc]

The Allegro driver boards are widely used with Reprap 3D printers, they seem to have a good rep. I think a few people burn them due to miswiring or inadequate heat sinking.

AFAICT the problems with TB6560 are related to requiring a relatively slow pulse rate, and with modern controllers that can create fast pulses, you get missed steps. The Allegro drivers work down to 1us pulses, which should be fast enough for anything you can throw at them!

It would be good to find a 3/4 axis board with Allegro drivers, might be cheaper than buying separate modules.

[boldford]

I'm inclined to prefer separate driver boards for each axis. If one does suffer a premature demise its far cheaper to change out the single module; moreover it may be easier to trouble-shoot by swapping modules around. Has anyone tried these http://www.quasarelectronics.com/315...tor-driver.htm 5 amps max makes them seem quite attractive; and a UK distributor.

[Jonathan]

Has anyone tried these http://www.quasarelectronics.com/315...tor-driver.htm 5 amps max makes them seem quite attractive; and a UK distributor.

If they did micro-stepping that wouldn't be too bad...if you're keen you could attach a PIC to it and program that to do microstepping (pretty easy to code), but by the time you've done that you might as well make the whole driver, especially since they've released the schematic. Athough that leaves a bit to be desired - back-emf diodes for instance!

For a few £ more though:

http://www.ebay.co.uk/itm/CNC-Micro-...ht_7002wt_1270

You're unlikely to need more than 4.2A since most Nema 23/24 motors fall in that range when wired in bipolar parallel.