reversed joint directions

squirrel-project / squirrel_driver

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reversed joint directions #127

Open mzillich opened 7 years ago

mzillich commented 7 years ago

some joint directions seem to be reversed. I guess this is a mismatch between motor driving directions and joint directions as defined in the URDF.

ghost commented 7 years ago

Is this an issue of all robots? I remember that only ALU-FR reported this? So if this is the case, I guess this is related to the model and not the controller. If the controller works for two out of three robots, I guess the third one has issues with its model. As I have no clue - and also claim that it makes no sense to do such changes in the controller code - I suggest trying to fix the model. @ipa-nhg ?

ipa-nhg commented 7 years ago

fix the model? what do you mean? if I change the URDF then UIBK and TUW will not work.

From my point of view, there are two options:

add the parameters motor directions on the controllers.yaml, modify the driver to read these parameters and create a configuration file per robot.
Change the motor directions on the dynamixel firmware

If it is possible I vote for the second one!

ghost commented 7 years ago

Oh snap, you're right. Same base models. Well, then I'm with you and suggest that ALU-FR fixes this on the motor side and not on the controller side; the latter is just another dirty hack then.