Does anybody know how to program servos?

Comments

• drdave

  June 2021

  Dont know what robotC is but I would assume its some kind of ladder logic application. I have worked with RSlogix most of my life and the nice thing is RSlogix will tell you when youve made a mistake to a certain degree. Only thing I can tell you is if you have a known good drive board, your problem probably lies in improper syntax, sequence commands, or a malfunctioning sequencer.
• prozacgod

  June 2021

  If you're not using a specific servo controller, you'll have to program a duty cycle loop into your microcontroller.

  Assuming this is the case. I'm not familiar with RobotC, or your wiring. This should be easily adaptable to your situation.

  You'll need to create a function for setSignal - it will set the bit to change the signal where your servo is attached. You'll have to create a waitMS function that will wait the proper number of microseconds. Most microcontrollers will come with this documented somewhere.

  Angle = -80; // turn left to 80 degrees

  Angle = Angle + 90;

  // you may want to restrict angle to 0, 180 here.

  Vss = 1;

  Vdd = 0;

  for (;;) { // infinite loop to keep telling servo where to go

  setSignal(Vdd);

  waitMS(100); // wait

  setSignal(Vss);

  waitMS(600 + angle * 10); // give the proper signal to the servo

  }