Author Topic: servos without electronics?  (Read 2661 times)

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Offline cooldogTopic starter

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servos without electronics?
« on: December 29, 2008, 07:27:24 PM »
i just found this at pololu it is a with the electronics removed.
http://www.pololu.com/catalog/product/695

would you need a H bridge to run it?
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Offline airman00

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Re: servos without electronics?
« Reply #1 on: December 29, 2008, 09:19:04 PM »
would you need a H bridge to run it?
Yes you would need a motor controller
Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

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Offline Ro-Bot-X

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Re: servos without electronics?
« Reply #2 on: December 29, 2008, 09:24:45 PM »
Check out the uBotino robot controller!

Offline Sean

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Re: servos without electronics?
« Reply #3 on: December 31, 2008, 07:20:48 AM »
Is there anything else like the 1381 voltage detector?

Offline Rebelgium

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Re: servos without electronics?
« Reply #4 on: January 05, 2009, 09:43:55 AM »
Is there anything else like the 1381 voltage detector?

Probably,
but why are you asking this here? This doesn't have anything to do with your question.

And always remember to make it as easy as possible for people to help you.
Now I would have to search a datasheet of the component you're talking about, and then compare with others...
You can do this yourself to, and much faster than waiting around for others to do it for you.

To relax after some hard work on robotics: A very fun free online text based MMORPG
orgcrime.net

Offline cooldogTopic starter

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Re: servos without electronics?
« Reply #5 on: February 11, 2009, 07:39:02 PM »
Yeah, you need this: http://www.solarbotics.com/products/k_smd/



i did some reading up on the motor driver however there is one part i am stuck on. it has 5 wires coming out of it instead of the tradional 3 that a servo has.
http://www.solarbotics.com/assets/documentation/kit10.pdf
if you look at page 5 (sorry i can't quote from a pdf) it tells you where each wire goes from what i get is red and blue are power from your micro contoller and D1 and D2 select what way the motor spins or is braked but how you you use this on a microcontroller i think it has something to do with the yellow wire but it says that yellow turns the chip off?
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Offline Ro-Bot-X

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Re: servos without electronics?
« Reply #6 on: February 11, 2009, 08:26:20 PM »
Yellow wire is Enable. If Enable is High, the H-bridge works and the motor will spin (or not) depending on the D1 and D1 signals. If Enable is Low, the H-bridge is off and the motor is like not connected, that means it can spin freely (or coast).

You want the Yellow wire to be connected to 5V (High) and PWM one of the Direction pins (D1 or D2). The other direction pin will actually set the direction of motor spinning.

Also, the Red wire is to be connected directly to the battery, not to the regulated 5V, but be careful not to excede 12V. Regular servo motors are powered up to 7.2V, so that should be fine.
Check out the uBotino robot controller!

Offline cooldogTopic starter

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Re: servos without electronics?
« Reply #7 on: February 11, 2009, 09:00:53 PM »
okay so red and blue get connected to the battery (not exceding 12v) then i use D1 (or D2) and connect it to the microcontroller and connect the other (D1 or D2) to the battery. then yellow gets gets connected to 5v to turn on the controller

right?
robot will rule the world and i will be building them
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favorite web sites
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http://www.instructables.com/

 


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