Project help. Servo control circuit

Discussion in 'General Electronics Chat' started by henryscy, Jan 29, 2011.

  1. henryscy

    Thread Starter New Member

    Jan 29, 2011
    1
    0
    Hi guys,

    I'm new to this forum here, so pardon me for any informality.

    I like to design a circuit board (without programming) using servo. The actions are like this, by using a 2 ways switch, pos 1 and pos 2, and at pos 1. the servo is able to move to the left at the angle of 90 degrees or so and at pos 2, it can move back to the original position. (move back by moving right), both at slow speed.

    I read through the forum and I see that it can be done using 555IC, but i have no clue on how to work on it...

    Can any kind soul advise me on this? Many thanks. :)
     
    Last edited: Jan 29, 2011
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    If you look at the tags window under the message, you will be able to click on "servo" and find all the threads on that subject.
     
  3. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
    I'm no expert on 555s but I had a bit of a play and came up with this. Obviously all the resistor and capacitor values are wrong, but the basic principle might work.
    You can simulate it if you go here:
    http://www.falstad.com/circuit/
    then click import and paste this in:
    Code ( (Unknown Language)):
    1. $ 1 5.0E-6 4.818269829109882 56 5.0 50
    2. 165 256 144 272 144 0 5.0
    3. R 320 112 320 96 0 0 40.0 5.0 0.0 0.0 0.5
    4. O 384 208 432 208 0
    5. w 256 176 224 176 0
    6. r 224 176 224 112 0 300.0
    7. w 224 112 320 112 0
    8. w 224 272 256 272 0
    9. c 224 272 224 320 0 3.0E-6 3.296510359205834
    10. g 224 320 224 336 0
    11. w 224 240 224 272 0
    12. w 224 240 256 240 0
    13. r 224 176 224 240 0 1000.0
    14. w 320 112 512 112 0
    15. w 512 112 624 112 0
    16. w 224 320 256 320 0
    17. w 256 320 256 368 0
    18. w 512 368 624 368 0
    19. r 512 112 512 240 0 10000.0
    20. r 512 240 512 368 0 2000.0
    21. r 624 112 624 240 0 2000.0
    22. r 624 240 624 368 0 10000.0
    23. S 400 320 448 320 0 1 false 0
    24. r 368 320 400 320 0 1000.0
    25. c 320 320 320 368 0 9.999999999999999E-6 3.7962962962937934
    26. w 256 368 320 368 0
    27. w 320 368 512 368 0
    28. w 320 320 320 304 0
    29. w 320 320 368 320 0
    30. w 576 336 448 336 0
    31. w 576 336 576 240 0
    32. w 576 240 624 240 0
    33. w 512 240 448 240 0
    34. w 448 240 448 304 0
    35. o 2 32 0 38 5.0 9.765625E-5 0 -1 output
    36.  
    [​IMG]
     
  4. russ_hensel

    Well-Known Member

    Jan 11, 2009
    818
    47
    Moving slowly may make this more difficult. Why not us a uC? The launch pad should do it. Learning a bit of programming might be good.
     
  5. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,675
    899
    Last edited: Jan 29, 2011
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