PMINMO 297/298 boards

[Ross77]

Ditto. Id be well chuffed if I could solder like that..

What are they like in use? Do the motors Buzz, hum etc.?

[irving2008]

Ditto. Id be well chuffed if I could solder like that..

What are they like in use? Do the motors Buzz, hum etc.?

only tried unloaded so far, but quiet as a mouse... faint whine if you listen hard...

soldering's easy - I did my time hand-building pre-production boards, many many moons ago!

[Ross77]

only tried unloaded so far, but quiet as a mouse... faint whine if you listen hard...

Happy days... Is that in full or half step?

When I tested my board,(simlar to PMINMO) at 1/2 step they squeeled like little piggys. (probably didnt help as the pulse came from me tapping a wire at o.5v onto the pin :whistling:) havent got around to trying it with the pulser you designed.

BTW. is that + 0r - edge output? I beleive the L297 requires a - edge.?