simen/grbl — Issue #41: max step frequency of GRBL Atmega328p
Author: pauljay
Created: 2011-10-13 06:17:46+00:00
State: open

Is there anyone who achieves more than 40KHz step frequency of GRBL Atmega328p ?
I have executed several tests changing microstep level and seekrate of each axis.

The fastest one I have succeeded in is 38.4Hkz for each axis.
If I adjust parameters to get faster speed, then interrupt handler routines went wrong.
So the pulses in my osciloscope shows broken steps.
Also the EEPROM data area is broken to show incorrect values. But it shows correctly after reseting Atmega328p board.