THB 6128 driver speed test

Testing maximum speed of a THB6128 based stepper driver from reprapdiscount.com

For testing a STM32F4 was used generating the step pulses using the hardware TIM.
The driver requires a minimal step pulse of 40ns (nano seconds).

With 1/128 micro stepping enabled @ 24V you can go up to 1.5 MHz (1500 kHz!) step pulsing.

ATTENTION: Using more than 2 MHz damages the driver!

(Icon: “Integrated Chip, SMD 64 pin” © Double-J Design, CC-A-3.0)