# 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
283
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.

File size:
14.8 KB
Views:
35
4. ### russ_hensel Distinguished Member

Jan 11, 2009
820
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
5,699
909
Last edited: Jan 29, 2011