Let's Make Robots!

continuos rotation?

hello everyone im making a robot, and ive accidently bought my self non-continous servos. so i was on my way to convert them yo continous rotation and reading all the how-to's it says you need to use a servo controller to set the servo to the center position before beginning, but i do not have a servo controller. please tell me if i can just do this without setting it im just making a  small r/c or autonomous robot. if i need to can i just go ahead and skip that step do everything else and then wait for my arduino and motor shield to come in and then set it to center position? thank you i would rather not spend another 30 dollars to buy more motors.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

If you want to use the method you described you dont need a servo controler to center it, just hook it up to your arduino and give it a simple comand to center the servo.

Dont forget to cut the 2 mechanical stops that stop the servo from truning all the way. The top of the potentiometer and a small platic stop on the main shaft that the servo horn srews on to.  

Btw do you need the motor sheild if you are using servos to drive the bot?? 

You also need to use a hobby knife and remove the little limiting bumps on the gears which prevent full rotation.

I've hacked a lot of servos. There is no need to center the servo first. Just replace the potentiometer with 2 resistors as shown here: