|
Hi,
At the moment, I'm using a precision silicon oscillator LTC6900, from tests, its not that precise, drifts by +-1hz for frequencies between 100hz and 2khz
I did try a crystal, but noticed the same drift, perhaps the capacitors are causing this? i tried with tantalum, but got the same.
moreover, the LTC6900 is variable which is a great help for me to arrive at the optimum frequency once i've established my gear ratios.
I am using microstepping with 1/16th stepping using the A4983 stepper driver from Allegro and switching to half step digitally for high speed slew. that way i may get away with the need for higher gear reduction
|