Servo communications transiently working
Servo communications transiently working
by arekku
Wed Nov 11, 2009 10:51 pm
Sorry I've got a problem and no clue what's going on.
At the start of my program I turn on the LED on all servos and verify that the reply indicated no errors.
At first all actuators pass this test an the robot begins moving. If at any point an error would occur (overheat or no reply) the system will stop.
Now what happens after a few seconds is that the system stops due to no reply, should I attempt to start it again it'll not do it because it'll fail the LED test.
So I suspect it's either a wiring problem or a driver problem, but I'd appreciate any ideas you'd have at what's going on.
At the start of my program I turn on the LED on all servos and verify that the reply indicated no errors.
At first all actuators pass this test an the robot begins moving. If at any point an error would occur (overheat or no reply) the system will stop.
Now what happens after a few seconds is that the system stops due to no reply, should I attempt to start it again it'll not do it because it'll fail the LED test.
So I suspect it's either a wiring problem or a driver problem, but I'd appreciate any ideas you'd have at what's going on.
by arekku
Wed Nov 11, 2009 11:23 pm
There are no duplicate ID's.
There are 19 servos, ID'd 1 to 19. You can't have two actuators sharing the same ID because then one ID would be missing from the chain, thus I'd notice when lighting all the LED's.
However I use my own driver.
What's really fishy is this worked perfectly one week or two weeks ago.
There are 19 servos, ID'd 1 to 19. You can't have two actuators sharing the same ID because then one ID would be missing from the chain, thus I'd notice when lighting all the LED's.
However I use my own driver.
What's really fishy is this worked perfectly one week or two weeks ago.
by PedroR
Thu Nov 12, 2009 3:45 pm
hi
we've had cases with Limor's Bioloid where the cables would work intermitently.
We first saw this with his (quite old) Bioloid at BETT 2009.
The robot would start moving correctly but after passing certain positions one of the servos would not move anymore. Shaking the servo seemed to help (which apparently restored cable continuity).
In the end we replaced the cable and it fixed the issue.
Pedro.
we've had cases with Limor's Bioloid where the cables would work intermitently.
We first saw this with his (quite old) Bioloid at BETT 2009.
The robot would start moving correctly but after passing certain positions one of the servos would not move anymore. Shaking the servo seemed to help (which apparently restored cable continuity).
In the end we replaced the cable and it fixed the issue.
Pedro.