Just some additional info, since this is the first result when googling this driver: You may have to invert the enable pin signal if you are switching from A4988s, at least that's what I had to do to get them to work.
Concerning the drivers themselves:
They are much quieter than the A4988 but still quite audible when moving. Compared to the A4988 the sound is lower, being much easier on the ears. If no motor is moving they are practically completely silent. My A4988s produced a horrible headache-inducing whining sound when standing still, this is not a problem with the LV8729.
Since I have an ARM 32-bit-based board I can use 1/128 microstepping. The improvement compared to 1/32 is negligible though. The sound when moving is a bit lower and a little bit quieter, although not much so.
Concerning the drivers themselves:
They are much quieter than the A4988 but still quite audible when moving. Compared to the A4988 the sound is lower, being much easier on the ears. If no motor is moving they are practically completely silent. My A4988s produced a horrible headache-inducing whining sound when standing still, this is not a problem with the LV8729.
Since I have an ARM 32-bit-based board I can use 1/128 microstepping. The improvement compared to 1/32 is negligible though. The sound when moving is a bit lower and a little bit quieter, although not much so.