help:confused:

[klf99]

:mad: I have been trying to make my robot turn by moveing the front wheels with a servo but it keeps falling over. Can anyone help me?

[ghostindashell]

servo motors are not intended to power a robot's motion system (the wheels). Use a regular motor module. it will provide you with the continuous rotation needed to make a turn.

[dbinder1987]

ghost, the poster wasnt trying to make the bot move with a servo motor, they were trying to do a rack and pinion steering system like in most current rc cars. KLF99 i am not really sure why it would fall over, but if you look at an old rc cars steering, you may get a better understanding of how to make it work. how many wheels are you trying to turn? if you only have one wheel turning, and 2 drive wheels, then that might not be stable enough for it to stay up while turning. try making 2 wheels turn at the same time.

[MattW]

Hey, I made a robot just like what you're talking about. I used two long bars loosely connected at each end with a hanging bearing screwed down with locknuts to make sure it didn't come apart, but would still hold. I then used a servo turning a lockbar again loosely connected to the two long bars. I also ran a standard bearing across them and then an axle through that to make sure the servo moved the two bars turning the wheels instead of turning the whole assembly. I'll post some pics later in the original design section.

[John V-Neun]

:mad: I have been trying to make my robot turn by moveing the front wheels with a servo but it keeps falling over. Can anyone help me?

Without pictures or more descriptions of your robot, it is tough to diagnose the problem. It is possible that your robot is just inherently unstable due to the position of your CG and your robot footprint.

Remember, (as it says in the inventors guide) if your CG drifts outside your footprint the robot will fall over.

Try increasing your robot footprint for better stability.
"Wider is better."