The Windows Application
34
SLVU574B – September 2011 – Revised July 2019
Copyright © 2011–2019, Texas Instruments Incorporated
DRV8803/04/05/06 Evaluation Module
4.9
Speed Control
Figure 39. DRV88003/04/05 Speed Control Windows
Speed Control/Start Steps
- The speed is set by either using the slide control, or selecting the Steps per
Second value in the Steps Per Second number box. Using either control the other will be updated
automatically. Pressing the “Start Steps” button, will start the timer and the motor will step at the rate
specified by the Steps Per Second number Box/Slider. Once the “Start Steps” button is pressed it
becomes the “Stepping (Pause Steps)” button. Press the “Stepping (Pause Steps)” button to stop the
stepper motion. The Steps Per Second rate is updated automatically anytime the slider of the number box
is used.
Pulse 1 Step
– Control only applies to the DRV8805. Clicking this button will step the motor once, and
also toggle the corresponding STEP pin HI (green) then LO (red) or LO (red) then HI (green) (see
DRV88xx GPIO signals). A step takes place when the pin goes from LO (red) to HI (green)
4.10 Acceleration Control
Figure 40. DRV88003/04/05 Acceleration Control Windows
Each respective control (slide bar or number box) automatically updates the other when it is being used.
