Other Parts Discussed in Thread: DRV8886, DRV8880, LM317
I am trying to adapt this DRV8886EVM for stepper motor application with such interface as below,
36V for VM.
5V signal on/off for enable /disable of motor rotating.
5V signal on/off for direction,(forward /backward)
once our position setting is achieved then just disable stepper motor motion with enable/disable signal off, if any difference has , internal logic control circuitry compare setting position value with rear position value and decide to provide the corresponding enable and direction signal.
while current DRV8886 EVM interface with outside is GUI operation.
consider one solution , feel still has difficult for my point of view.
using the original DRV8886EVM included , FT232RL inner 3.3V regulator provide power for MCU for optimized step signal , and then using electrical signal only to automatically control this DRV8886 EVM,,
but without need the manual function in the GUI to use wake/enable/direction slide button,I wonder whether there is certain device can transfer this signal to GUI matching control input automatically ?
like: 5V interface enable signal on match to turning on(getting green ) wake and enable control input inside the GUI; also turning on (getting green ) at start/stop steps button for the continuous mode inside GUI.
5V interface direction signal on match to direction (getting green) control input inside the GUI.
if this approach is not possible, I also think to choose another TPS62122EVM for substitution of FT232RL , but the interface control signal is still 5V .need convert to 3.3V for signal to extra spare I/O for MCU inside this DRV8886EVM. , I have to redesign a adapted board combination TPS62122EVM and DRV886 EVM main components with more optoisolator for MCU input signal for enable and direction interface signal , but the cost and work is much more .