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Topic: Jerky servo!!! (Read 2612 times) previous topic - next topic

AWOL

To the servo - where else?
Don't forget to common the grounds.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

vishalapr

When i give commands to the servo and/or the LED it works fine, but when I give commands to the motors it jitters and jerks, and the motors also go on only for half of a second or 1 and a half of a second sometimes when they are supposed to go on for 1 second.

How do I stop this happening

When I remove the servo then everything works fine but when I add the servo the above problem occurs...

Please help...

AWOL

9V batteries are rubbish for powering high current devices like motors and servos.
Don't power anything other than LEDs off the Arduino.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

vishalapr

But if I add 4 AA batteries then the robot will become too heavy and will not be able to move...So is there no other alternative.

weirdo557

maybe you should redesign your robot then? you could look for a flat lithium battery pack, it would be lighter and smaller, but you would need extra circuitry to charge it and prevent it from being discharged too much.

zoomkat

Quote
But if I add 4 AA batteries then the robot will become too heavy and will not be able to move...So is there no other alternative.


Looks like you have designed a robot that will not work. You really need to use google and other resources to look at how robots like the one you want have been built by others. Some robot kit sellers like lynxmotion (bottom) have assembly instructions for their products that can show you how things are done. Below is another resource that might be helpful. sorry your bot did not work for you, but maybe you can change it so it will work.

http://www.seattlerobotics.org/resources/RoboticsMiniFAQ.pdf
http://www.lynxmotion.com/driver.aspx?Topic=assem05
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

vishalapr

All right I'll redesign my robot.

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