Gyros vs. tilt
Gyros vs. tilt
by Robogun
Fri Nov 30, 2007 11:30 pm
Hi folks!! I am right now putting together hip servos in my nova and looking at the two pg-03 gyros that are next, I read the article an it looked like a needed item. can I set the sensitivity to recognize when he has fallen say 30 - 50%. also do the gyros affect commands like cartwheel, tumble? Will I need to gyro-off for these moves? I know from reading in these forums the tilt sensor preforms the same kind of function but with a lot less sensitivity....do I still need it or can I fall back on the gyro for this? any help would be appreciated since I'm new to all this.
by bauermech
Sun Dec 02, 2007 4:08 am
The PG-03 gyros sense only the initial change in momentum (a push or pull). If your robot is static (say, tilted forward w/o any change in degree), no copensation will be processed. The harder the push or pull, the greater the reaction (typically in the leg and/or knee servos). Because of the way they're set up, enabled gyros tend to make the robots "fish-out" while flipping or falling on their face/back. They do not trigger a routine to stand.
With a tilt sensor, the value sent is referenced from the constant pull of gravity perpendicular to the ground. If your robot is tilted forward and static, the sensor is still aware it's tilted at an angle. So if he's on his stomach, you can trigger a routine to return him to an upright position.
Having both is nice.
With a tilt sensor, the value sent is referenced from the constant pull of gravity perpendicular to the ground. If your robot is tilted forward and static, the sensor is still aware it's tilted at an angle. So if he's on his stomach, you can trigger a routine to return him to an upright position.
Having both is nice.
