THE Bipolar Stepper Driver. Have you seen it?

[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.