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Servos with continuous rotate and Picaxe 28x1 help

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By Mrmoses

February 16, 2010

Hello,

 

I am making a robot to climb stairs and I am wondering if it would be difficult to program a picaze 28x1 to provide servos with continuous rotation.

 

The servos would spin the wheels I am using.

 

I am guessing that the servos are connected to the pixaxe and the picaxe connected to a battery?

 

My final robot is suppose to be about 3 pounds.  Is there any special programming or anything I have to do? I am a complete beginner and know pretty much nothing. I am just trying piece things together from the Internet.

 

Any help is appreciated!! thank you !

‹ Using a LCD Error coming up in code ›

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By J201Fairchild
@ Fri, 2012-01-27 20:42

Continuous rotation servos DO exist, and they have different programming options.

By Mrmoses
@ Thu, 2010-02-18 21:37

I have seen some servos online that say continous rotation from futaba for about  $13 each.  I am wondering what I do to just have 4 servos with wheels attatched to them to go forward at a constant rate.  I am not sure I would be using a picaxe per say or what.  I am wondering what is involded.      I assume that the servos attatch to some sort of central controller and that controller is hooked into a battery of some type.

I am wondering what would be the easiest route to go about this. 

By OddBot
@ Wed, 2010-02-17 17:07
OddBot's picture
This is not possible as for a servo to rotate continuously it needs physical modification, not programming. Once a servo is modified you use normal servo commands except the value you give specifies speed and direction instead of position. There are plenty of tutorials on the internet and on this site about modifying servos. If you don't want to modify a servo then DAGU sell factory modified servos that rotate continuously. Contact Claudia.
By ignoblegnome
@ Tue, 2010-02-16 21:52
ignoblegnome's picture

As a complete beginner interested in a Picaxe controlled robot, you would benefit from a careful read of the start here robot project. That documentation should help you out a lot.

You can then use the search feature on this site and look for continuous rotation servo and you should find some good info. The Picaxe (or another microprocessor) can control a servo modified for continuous rotation using a single digital output.

Good luck!