How to control step motor? I'm going to make a smart blinds to stop the motors
First answer your first question, how to control the step motor, there are two ways: one is make your own driver circuit, there are many online information, this may not be stable, not recommended. The second is the use of the external manufacturer's drive device, the 51st chip machine as the main control system, through the communication interface to control the motor. This approach is simpler than development Intelligent curtain you said is which kind of, is the horizontal pull, or vertical lifting, in either, can through the sensor (limit switch) way to deal with to stop and start. The third question, motor speed is slow, it is related to your driver circuit and program, the speed of the motor depends on the pulse frequency, you give the information of some fuzzy, the specific issues that need to be combined with your current situation to judge. Keep in touch if you need to
Stepper motor, how slow Speed is controlled by stepper drives fine grades and, by the pulse frequency You can reduce breakdown and increase the pulse frequency to speed up For all to stop you can within the scroll and correlation sensor or reflection can also means used to measure the thickness of the curtain at present on the scroll When it finished flaps sensor signal output Of course is to control the rising You can also use this method to measure the thickness of cap a measure the thickness of the lower limit, received signal driven port shouldn't be hard The other method is slightly uglier and you have to add sensors to the window and one is where the bottom is and one is where you put it There is a fixed pulse number, such as a circle of 100 pulse, five laps after curtain Then writing the program can write 500 pulse, after the stop, personal feel or better, using the method of sensor with the number of pulse method also had better with lower limit sensor, protection, so as to avoid the curtain in place after hard cause damage, because the stepper motor step will be dropped, without zero calibration deviation will exist for a long time
Motor head need to stop the travel switch can be used in control, motor speed is slow, can the wheels of the motor shaft with a freshman, the wheels with other devices can be used in.
