#SERVO MOTOR ARDUINO LABVIEW FULL#
#SERVO MOTOR ARDUINO LABVIEW CODE#

the entire range of the motor maybe two full revolutions.so if i increase the knob position i want the output signal frequency to increase and i want the motor to rotate x amount of steps cw,if i decrease the knob position i want the frequency of my signal to decrease and also the motor to rotate in a ccw direction until it reaches its new position.

#SERVO MOTOR ARDUINO LABVIEW CODE#

Thanks Mike.I am not too hot on the whole senging commands type programming,or programming in general as may be obvious ! sorry if my explaination wasnt great.What i hope to do is write a code for the arduino which will allow me to connect a pwm signal from my labview system to the arduino board.basically what i want to end up doing is turning a knob on my labview screen which will change the frequency of the outputted signal,i then want the motor to move to a position relative to the width of the signal i am outputting,basically one signal from labview and i am hoping that the arduino will figure out the forward and reversre from this. I will only have remote access to the labview unit and using pid control i will need the arduino unit to also stand alone with the program loaded onto it and just move the motor relative to the inputs it recieves from the digital output module on labview.is this possible.ps i have zero and i mean zero experience of arduino programming.Thanks all :-? The below page is somewhat old, but it gives a good idea of just what is in a servo and how it works.Hi All, I am currently starting a project for work.I have to control the position of a small stepper motor using labview rt.I have as yet not purchased the output module for my compact rio device but it looks like i will be buying a digital output unit and not an analog 0-10v module.My plan is to control a stepper motor with an arduino inbetween labview and the motor.I would like to output a digital output and then use the arduino to control the position of the motor relative to the frequency of the output pulse.Is this posible ? the project is going to be on a standalone device,based on some calulations i am doing in labview i will need the pressure in a system increased or decreased,I plan to use labview to output the signal and the arduino to take care of the motor for me. Some of these values date back to the older analog RC equipment. I think there needs to be a minimum of ~5us wait between pulses to the servo for the servo to accept the next pulse as a new command, so the full 20ms wait is not required for a new sequence. One could use an o-scope to see just how far the timing limits can be pushed. The servo library allows the default values to be changed in the 'servo.attach' function. The servo.cpp library contains the 'default' us values as 'default min is 544, max is 2400' microseconds. I think the standard spec for RC servo equipment is only +-45 deg rotation, so that is probably the reason the 1000 to 2000 µS range is referenced. OK, so the servo is following specs, but how come all the references above mention 1000 to 2000 µS, and how come the servo library defaults to providing the correct pulse width? I found a page that specifies the pulse width for this particular servo as: So I measured the pulse widths and found they were 0.5 mS to 2.5 mS which is not what all the above references suggest. Myservo.write(val) // sets the servo position according to the scaled valueĭelay(15) // waits for the servo to get there Val = map(val, 0, 1023, 0, 180) // scale it to use it with the servo (value between 0 and 180) Val = analogRead(potpin) // reads the value of the potentiometer (value between ) Myservo.attach(9) // attaches the servo on pin 9 to the servo object Int val // variable to read the value from the analog pin

Int potpin = 0 // analog pin used to connect the potentiometer Servo myservo // create servo object to control a servo Then I tried a test sketch from the Servo library (part of the IDE I think) namely: #include In setting up a test however I found that a 1 to 2 mS pulse width only moved the servo partly around its travel.

Servo motor arduino labview