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Old Mar 06, 2014, 11:38 PM
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Joined Mar 2014
5 Posts
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hi. im new here. and need help to reverse GWS s36/std servo

hi..
does anyone know how to reverse the GWS s35/std motor using pic16f877a??


here's my code

device = 16f877a

trisb = 0

main:
pulsout portb.0,300 ----> seem's working in this code for forward

pulsout portb.1,100---> this one is not working for the reverse..

kindly help me..
this is for our project study..
thank you somuch.
and more power.
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Old Mar 06, 2014, 11:44 PM
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Joined Mar 2014
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i mean GWS S35/std servo motor..
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Old Mar 09, 2014, 10:45 PM
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Taipei, Taiwan
Joined Oct 2005
4,703 Posts
Hi Picbot,

Normally we refer to PWM for controlling GWS servos including this mentioned S35/STD. That is 1.5 ms or 1500 μs meant for its neutral position, while PWM signles less than 1.5 ms make it turn left continuously, while more than 1.5 ms turn right continuously.

There are two ways for changing its rotating directions:
1. Switch the leads on the motor at the inside of this servo, but this way is NOT recommended by GWS. YOu have to take your own risks if you'd like to do so.
2. Switch the direction that you fix the servo on your device. ie, if the servo arm was at the right end, pull the entire servo off your device, turn it around, make the servo arm at the left end, then fix the servo on your device. Putting the servo upside down is another way to go if you do not mind it.

Hope this could be helpful.

Chen
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