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Author Topic: NID HELP!!!-----"SERVO-HS311"  (Read 2653 times)

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Offline ToshibotTopic starter

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NID HELP!!!-----"SERVO-HS311"
« on: October 28, 2008, 11:13:05 PM »
im newbie in making robot.....plss help me!!!

im asking how to test a servo(hitec HS311) if its is woking....it is said that BLACK wire for GROUND; RED for power; and YELLOW for SIGNAL WIRE..... and they said SQUARE WAVE is needed for YELLOW wire...

Q> How to make servo work if im going only to test if it is woking??? am i going to supply 6V...(+)for RED;(-)for black....how about yellow wire??

Q> is there other way how to make servo work?????

Sorry for my noobness!!!

thnx for replysssss!!!! ;D

Offline gamefreak

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Re: NID HELP!!!-----"SERVO-HS311"
« Reply #1 on: October 29, 2008, 07:09:53 AM »
Yes, 6 volt to red, ground to black. For the yellow wire you need to send a pulse lasting from 1 ms, to 2 ms, 1.5 ms being centered. You need to send this pulse many times a second.

If you dont have any programable robot brain then you could get an RC reciever and transmitter and connect the servo to one of the ports, or you could buy a specialized servo testing tool that allows you to send precise waves to the servo and watch its rotation.
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Offline ArcMan

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Re: NID HELP!!!-----"SERVO-HS311"
« Reply #2 on: October 29, 2008, 12:49:43 PM »
Yes, 6 volt to red, ground to black. For the yellow wire you need to send a pulse lasting from 1 ms, to 2 ms, 1.5 ms being centered. You need to send this pulse many times a second.

50 times a second.

Offline Admin

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Re: NID HELP!!!-----"SERVO-HS311"
« Reply #3 on: October 30, 2008, 04:14:53 AM »
Quote
50 times a second
usually less . . . depends greatly on the servo, for example digital servos need fewer updates than analog . . . I often send just 10-20 per second . . .

Offline ToshibotTopic starter

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Re: NID HELP!!!-----"SERVO-HS311"
« Reply #4 on: October 30, 2008, 05:43:35 AM »
Guyz thnx alot.....ur replys helps me a lot.....

i wish i can go further to my project, cause i still nid 2 servo......i dont have enough money to buy servo online....i wish i can get servo here in laguna philippines....



TO THOSE WHO REPLY IN MY POST ....THNX A LOT GUYZ!!! ;D

Offline ArcMan

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Re: NID HELP!!!-----"SERVO-HS311"
« Reply #5 on: October 30, 2008, 09:13:17 AM »
The HS-311 is a standard analog hobby servo.  My study and experience with Hitec servos holds that it should be pulsed at 50 Hz or it will lose torque.

I really only have experience with Hitec servos, so other servos must be different as Admin says.


Offline Webbot

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Re: NID HELP!!!-----"SERVO-HS311"
« Reply #6 on: November 08, 2008, 03:45:08 PM »
But if you are just testing then the pulses can happen as often as you want. The normal is that every 50 times a second you send a pulse of the correct duration. Don't do it more than 50 times a second as you wont gain anything. But as Admin says you could do it 10-20 times a second. Normally what happens is that if you do it 'less times per second' then the movement gets kind of jerky - but it should still rotate.
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