Please don't hijack other people's threads, start your own. Suggest you do so and delete this then I'll answer your question.

Quote Originally Posted by daniebjoubert View Post
Hi there all CNC'rs,
Coming from a technical background due to my father, I was always interested in automatic/computer control for machines.
My interest is actually the electronic part of the projects.
I have semi-finished a table top cnc, to be used as an engraver in my friend's jewellery shop.
The driver boards were home made using a 4070 Ex-Or ic, 4027 Flip-Flop and L298 H-bridge driver
I have tested movements with 4 wire stepper motors running at 12 volt/0.3A, recovered from old plotters.
The results look ok but now I have to move on!
In South Africa I can get hold of Nema17-3.7V/1.68Amp stepper motors.
I am planning to use a beefed-up 5 volt supply but with current limit, set at approx 1.2 amp.
My question, if some-one can perhaps help is the following;
Will the L298 H-bridge be able to except a supply voltage of 5 volt/1.2Amp and drive the 3.7 volt stepper.

I don't want to buy the low voltage steppers and discover that it does not work.

Thank you forum group in advance

Danie