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Topic: 6-pin Servo? (Read 2042 times) previous topic - next topic

afroraydude

Oct 31, 2014, 07:22 pm Last Edit: Nov 01, 2014, 12:01 am by afroraydude
Hello,

For my project I wanted to turn my old RC Truck into a arduino controlled vehicle. I have taken it apart and have 3 parts, the back wheels with a motor, the front wheels that have a 6-pin servo and lastly the part that connects both the front wheels and the back wheels together and holds the now-removed microcontroller and the battery, also removed. My only question is, how would i connect the 6-pin servo to the arduino?

Thanks for replying
~ afro

Peter_n

Can you make a photo of it ?
Those are sometimes not real servo motors, just a DC motor and a potentionmeter feedback. The control for the servo motors and everything else is done in a single controller.

keeper63

Can you make a photo of it ?
I agree; a photo of the steering "servo" (or whatever it is) would be very helpful.

Those are sometimes not real servo motors, just a DC motor and a potentionmeter feedback.
The strange thing is the six "pins" - a motor and pot would only require 5 pins; so either the extra pin isn't hooked up, or it is something else (for instance, a DC motor - 2 pins - and 3 locator switches - one common and 3 other leads).

It definitely isn't a real servo, likely. But it could be made into one (using the Arduino) - hook the potentiometer or switches to the Arduino, and control the motor using a motor driver of some sort, then have software to control the motor and turn it on/off/change direction as needed, until the proper position (as reported by the pot or switches) is reached.
I will not respond to Arduino help PM's from random forum users; if you have such a question, start a new topic thread.

afroraydude

Can you make a photo of it ?
Those are sometimes not real servo motors, just a DC motor and a potentionmeter feedback. The control for the servo motors and everything else is done in a single controller.
This is as far as i could get to it:

Peter_n

Thanks for the photo. It is still a mystery to me. It could be a servo without controller inside, or a special made servo. Can you see a brand or type on the servo ?

Do you have a multimeter ? The potentiometer would be easy to find when that has seperate wires to the connector.

afroraydude

#5
Oct 31, 2014, 11:27 pm Last Edit: Oct 31, 2014, 11:53 pm by afroraydude
Got in, found more screws to get out so here is the thing. I guess it is a motor, maybe a potentiometer

Peter_n

Perfect photo, that is indeed a servo motor without the controller inside.

The position is set to the potentionmeter and that can be read by the Arduino.
However, to make the motor turn in both directions, you need an H-bridge. You can not control the motor without an H-bridge.

I think it is easier to replace this servo motor with a normal servo motor. The Arduino Servo library can be used to control a normal servo motor, and you don't need the H-bridge.
http://arduino.cc/en/reference/servo

afroraydude

What does an h bridge look like, i might have one. Although i might just be a switch

afroraydude

This is for a robot so i probably would need an h-bridge anyway

Peter_n

Google for : Arduino H-bridge
and have a look at the pictures.

For example this one: http://ecetechprojects.wordpress.com/2011/07/08/arduino-h-bridge-motor-control/

Or buy a motor driver module, for example this one : http://www.sparkfun.com/products/11890

afroraydude

Google for : Arduino H-bridge
and have a look at the pictures.

For example this one: http://ecetechprojects.wordpress.com/2011/07/08/arduino-h-bridge-motor-control/

Or buy a motor driver module, for example this one : http://www.sparkfun.com/products/11890

The arduino motor shield wont do the trick?

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