
CRich
USA
Asked
— Edited
Has anyone used a gyro with the EZ-B? If so, does one work better than the other? I'm looking at either, the NXT gyro sensor from http://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&key=NGY1044 or the triple axis from http://www.trossenrobotics.com/p/Triple-Axis-Digital-Output-Gyro-ITG-3200.aspx
Any ideas are appreciated
Hi rich. The format that ezb uses to control servos and digital inputs are the same as rc rx. May I ask what you are using the gyro for? Not all gyro are created equal and some have drift and jitter. These are terms to describe when a gyro doesn't think the object is moving but it slowly drifting in one direction. That is not correctable and has to do with the quality and accuracy of a gyro.
My idea is to create a one wheeled robot. In all honesty, now that I see the image, I want to end up with a robot similar to the one beside your "we have tutorials" logo. A little more horizontal than vertical though.
Ok you need a very sensitive gyro. My favorite and one of the most accurate gyros under 100 dollar's is the futuba gy401 . http://www.ebay.com/itm/Futaba-GY401-Heading-Hold-Gyro-250-450-500-550-600-700-/280910967260?pt=US_Character_Radio_Control_Toys&hash=item41679931dc
You will need two, one for x axis other for your y axis. The purpose of the gyro is to use accelerometer feedback to actively adjust the servo input to stay balanced. This also gives you manual adjustments directly on the gyro itself and because it has a "heading lock" feature it can compensate for forward movement and still stay level. I know these arent cheap but your better off than buying a digital output ic2 board and the accelerometer freaking out as soon as the robot is moving in forward motion. These gyros sample position 2048 times per second. One end of the gyro y harness plugs into ezb and the other your servo or h bridge being used to drive your balance bots wheels. You will need to use external power unless your drive wheels you standard rated servos. More amperage is pulled through a servo or motor that is constantly adjusting and ramping the wheel position back and forth.
You could also use a Wii remote
but it won't be very sensitive. It'll actually be quite funny lol
Call your robot the weeble
Ok, thanks.
One last question, is there anyway, you know of, for me to not only balance the bot on one wheel but also drive it?
Oh and I plan on using the wii remote
Drive it? Ive never seen it really driven so I will check setups of other uniball bots.... brb