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 earby Fivefold - Stepper Motors, Servo Motors, DC Motors
That seems to have done the trick. They work fine now, although not quite as silent as I have hoped, even with 1/128 microstepping. Still a major improvement compared to the A4988s. Thank you!by Fivefold - Stepper Motors, Servo Motors, DC Motors
I want to change from the good old noisy A4988 to the supposedly quieter MKS LV8729. So I disconnected my steppers, replaced the stepper drivers, set vref/current, connected the steppers again, shutting off the power before each step. Unfortunately, none of my LV8729 output any stepper voltage or current, the voltage between the A1,2 and B1,2 pins is ~0V. In consequence, none of my stepper motorby Fivefold - Stepper Motors, Servo Motors, DC Motors
I didn't think of trying a different pin. PIO0_9 works perfectly.by Fivefold - Firmware - mainstream and related support
I am using Gen7-ARM and Teacup and would like to add a PWM-controlled fan to my printer. I managed to add a new device/fan in the board.h, using one of the SPI pins as output (in my case PIO0_11). This does make the pin controllable via M106 as intended, but unfortunately only as on/off state. There's no PWM, regardless of the respective parameter/setting in the board.h. I am not sure how the PWby Fivefold - Firmware - mainstream and related support
The internal pulldowns did the trick, everything works as expected, now! For anyone having the same problem and trying to keep the old config by just adding the pulldown#define: there's been a small change in experimental to #define TEMP_EWMA, too. Just compare the printer.mendel90.h file with your printer.h/config.h if you get errors about temp_ewma when compiling. Thank you Traumflug for the fby Fivefold - Reprappers
I recently built my first prusa i3, using Gen7 Electronics 2.0 ARM and the Teacup firmware. Unfortunately my endstops show very strange behaviour. They are simple mechanical endstops in a normally closed configuration. As can be seen on the pcb layout (Link), they are in series, so they should all behave the same. In the closed state all work as expected, but as soon as one is pressed/the circuitby Fivefold - Reprappers