hello all i am currently working on a school project which uses the AL-5B robotic arm with the SSC-32 board.
the problem i have is that whenever i send a group move command i.e #0P2000#1P2000T1000 then arm does so and then it jitters and stutters once in position. I thought this was because the arm was constantly going in and out of position and the servos made constant adjustments to make it in place and it was ‘normal’…until one servo emitted smoke and died.
i came to this forum and read about how people have the same problem and it was mainly due to the VL=VS jumper not being removed but in my case it is…what else could cause the jittering? it causes the servos to be constantly working and overheat…
I am actually in charge of the software for this project. I wanted to take a video of the arm but the hardware guys dismantled the robot to make some modifications and I couldn’t work on it this week.
anyway the arm runs off a big battery brick that if I recall correctly provides 30V DC and it goes to a converter card that converts it to 12V DC and that goes to the arm.
I am worried it is a software command problem because the power is directly DC and not converted from AC. It seems to be the servos in the lower portions of the arm that are stuttering, as I said it seems like they are constantly making small adjustments to stay in place.
is that so? this was done by the hardware team, i’d have to verify and check with them tomorrow…
i’ve tried searching online for the power supply for this AL-5B arm and i can’t find what’s the voltage you’re supposed to supply to it…if it is 12V does it mean that it’ll overloaded? if its overloaded then would it explain the jittering?
You must read the documentation for the BB2 and the SSC-32.
The VL should be at maximum 9v. The VS should not be much higher than 6V. I believe (I’ve not done this myself) a servo powered with 12V would go hot and burn out pretty fast, especially under high load.
