THE Bipolar Stepper Driver. Have you seen it?

[Jonathan]

One of these:
A943A TO REPLACE M542 CNC 1 Axis 4.2A DC24 50V Stepping Stepper Motor Drive-in Motor Driver from Industry & Business on Aliexpress.com
Or many of these:
Wholesale m542 stepper driver - Buy Low Price m542 stepper driver Lots on Aliexpress.com
Or if you're after a driver similar to yours:
57,42 stepper motor driver 3A DC12 32V, CNC stepper driver board,8 microstep,free shipping Wholesale price-in Motor Driver from Industry & Business on Aliexpress.com

Fair enough I didn't spot that you'd mentioned 1 amp without the heatsink. I take it you're planning on supplying heatsinks as an optional extra?

[NorDevX]

Ahhh yes of course the chinese ones you can get very cheap in fact if you go on ebay you can find them for even cheaper around 5-10 dollars. I've never looked inside them so I can't say anything about them. Another thing that seperates us is the smaller form factor as these are rather tiny. Also these will be opensource. And yes most likely heatsinks will have to be added...not sure if it should be extra or not I will probably just throw them in.

[John S]

Not your fault but the biggest problem with buying your drives is that EVERYTHING from the US gets hit this end for VAT at 20% plus a handling charge put on by the post office so in your case the user will have to pay £10 to £12 extra per drive.

These drives, which BTW are very good, not blown one yet, come in at £25 for 3 post paid from China but always come in under the radar.

New TB6560 DC Stepper Motor Driver Board 3A Controller TB6560 Driver Board | eBay

Ower Gert just bought some small hinges from the States without asking me. cost £40 plus £14 postage and got hit for £16 duty.

I could have got the same items from China for £9 all in.

I can understand trying to buy home grown but both China and the US are imports so you buy accordingly.

[John S]

Forgot to add being smaller does nothing for me, it's not like we have to cram it in a tiny box.
On machines space isn't a problem and going tiny just means more heat in a smaller area.

Can't see what the obsession with tiny is. Seen more than enough blown Gecko drives with tiny power traces on the board supposedly rated for 7 amps when the Leadshine ones use the hard shoulder south of Milton Keynes and never blow a trace.

[jcb121]

One of these:
A943A TO REPLACE M542 CNC 1 Axis 4.2A DC24 50V Stepping Stepper Motor Drive-in Motor Driver from Industry & Business on Aliexpress.com
Or many of these:
Wholesale m542 stepper driver - Buy Low Price m542 stepper driver Lots on Aliexpress.com
Or if you're after a driver similar to yours:
57,42 stepper motor driver 3A DC12 32V, CNC stepper driver board,8 microstep,free shipping Wholesale price-in Motor Driver from Industry & Business on Aliexpress.com

Fair enough I didn't spot that you'd mentioned 1 amp without the heatsink. I take it you're planning on supplying heatsinks as an optional extra?

What's the difference between the M542 and the A943A.

is one a "digital" stepper drive? (seen digital drives on zapp)

is one better then the other?

[NorDevX]

One day maybey we'll be big enough to have a location up there so shipping isn't an issue : ) It's form is tiny because it's efficient, not everyone will need that and it's totally understandable. For instance DIYers might prefer larger components to hand solder...although I have to say one stereo microscope and you can have a lot of fun with smd components as a DIYer. It is not however so tiny that it can't perform at its maximum.