Recent content by Neil-4545

  1. Neil-4545

    Stepper motor or Servo?

    I appreciate that my overall plan has not been revealed hevans, and there is a genuine reason for that. If this means you are no longer willing to take part, then I completely understand and thank you for your input thus far. Admittedly it makes it that bit more difficult, but to give any more...
  2. Neil-4545

    Stepper motor or Servo?

    Thanks for taking the time to draw it out Bluejets, that makes it much clearer. I see how the optical sensor controls the relay starts or stops the motor depending upon the position it's in. I take it the relay an incoming connection then 2 (switched) outputs. Actually, I'm thinking of using an...
  3. Neil-4545

    Stepper motor or Servo?

    Thanks bluejets, your help has been great. Look forward to the circuit if you get chance. Cheers.
  4. Neil-4545

    Stepper motor or Servo?

    Found a worm gearmotor at www.motionco.co.uk that runs at just 2 rpm on the output shaft, which is ideal for my needs. If I'm right, it'll take just under 2 seconds to move through the required increment and prevents unwanted movements due to the worm. Along with the suggestion of an optical...
  5. Neil-4545

    Stepper motor or Servo?

    I was just looking at the online RS catalogue. There seems to be a few different types o slotted optical sensors - pull-up resistors, phototransistor outputs and so on. Does it matter which one to use? A permanent magnet motor is a stepper?
  6. Neil-4545

    Stepper motor or Servo?

    Oh, I see more comments while I was typing! Thanks bluejets, dynamic braking sounds like the ticket. I'm new to electronics, so how would the relay be wired? Just across the poles where the power cables are attached? I assume this would be an easy mod if I find it does over run?
  7. Neil-4545

    Stepper motor or Servo?

    So a dc motor is the way to go by the sound of it, if I'm following what's being said. With the optical sensor Bob, does this create a beam of some kind that requires points on the wheel to break said beam in order stop the motor? I assume that to move to the next position, the board is...
  8. Neil-4545

    Stepper motor or Servo?

    Thanks for you replies so far guys. I initially thought of using a simple dc motor and worm gear set-up to prevent the wheel turning the motor and shifting out of position. Gearing could also be used to help get the correct amount of rotation through consideration of the ratios. However, I...
  9. Neil-4545

    Stepper motor or Servo?

    Hi, To say I'm new to electronics is an understatement! I have very very basic knowledge - my background is more mechanical and in high pressure pumps, but I want to make a device that requires some electronics. I hope you guys don't think my questions are too trivial! The answer might be...
See more
Top