2.5 EVM Operation

Use the following steps to operate the EVM:

1. Install the drivers and GUI. For instructions see DRV8428EVM GUI User's Guide, DRV8428EEVM GUI User's Guide or DRV8428PEVM GUI User's Guide.
2. Connect the wires of the stepper motor to the AOUT1, AOUT2, BOUT1, and BOUT2 terminals.
3. Connect the VM power supply to VM or VBAT connections, but do not apply power at this step.
4. Connect the USB cable between the PC and the EVM. When the USB is connected to the EVM, the status LED will begin to blink.
5. Open the GUI. The GUI can be found in the start menu at Texas Instruments → DRV8428x X.Y.Z, where X, Y, and Z are the revision numbers (to be verified) or by typing "DRV8428x" into the search bar of the start menu. If a shortcut was created, double-click on the shortcut to open the GUI. The GUI can take up to 30 seconds to establish a connection. If connection is not established, select the COM port under the Options menu. The baud rate is 9600.
6. Apply the desired voltage (4.5 to 40 V) to the VM/VBAT and GND connections.
7. For more instructions on how to control the DRV8428x EVM from the GUI, see DRV8428EVM GUI User's Guide, DRV8428EEVM GUI User's Guide or DRV8428PEVM GUI User's Guide.