Just got my first leg to lift up, move forward, come back down and move backward!!! Only using two servos but man I’m psyched!
In the Biped/Brat tutotial I am stuck on Section II: Creating a walking sequence, step 6; Group Links. My leg has three servos. I grouped Servos I (group A) and II (group B) together. In order to group servo III with them do I add servo II to group A and servo III to group B?
Mention is made several times of “crashing” a servo? How do I know when a servo is getting ready to crash?
You don’t group the ankle servos together at all. This is because the Sequencer program only supports one group and it is more of a hassle than a help to ungroup the other leg servos and group the ankle servos. Your ankle servos should be set to ~8 and ~-8. Just switch them so that they equal ~-8 and ~8.
I can’t find any mention of this in the tutorials so I can’t really be sure of context, but I typically describe a servo crash as trying to go beyond the physical limits of the servo. Just following the tutorial, you shouldn’t have to worry about this.
I am not actually building a Brat. Just made a leg with three DOF and used the Brat example to program the servos. So it is not necessary to group all three legs together; simply change their positions at each step so that they move together?
After I click on “Swap A<=>B” and deselct the “Selected Step” can I simply make moves to the servo positions, add them with the green “+”, then repeat until I have a sequence that I want? Or is it necessary to “Swap A<=>B” and “Selected Step” after every move?
Grouping servos in the BRAT example is done to make it easy to swap positions from one side to the other. So because you aren’t programming for a symmetrical bot, (has a mirror of one side on the other), the group function isn’t very useful.
