R.O.B. Robot Help

[ReddMcKnight]

Hi. I just wanted to let you know that I got ROB Fixed, but for some reason, when he lowers on the Gyro Spinner Part, he goes too low. I know he's not supposed to lower that much after watching a demonstration on Youtube. Do you know what the problem might be?

Are the holders for the Spinner motor and controller weight pivots all the way seated? Is the arm grabbing the spinner at the right point?

They are seated right, but his hands don't grab the spinner at the right point.

[CRTGAMER]

Just to be sure, did the arms drop to the correct height before you took apart the arm housing assembly? If so, maybe something you did in the arm assembly, maybe the arms are not sitting correctly?

[ReddMcKnight]

Just to be sure, did the arms drop to the correct height before you took apart the arm housing assembly? If so, maybe something you did in the arm assembly, maybe the arms are not sitting correctly?

I don't think they did. Also, after watching another video, I noticed that when I turn him on, after he completes his left/right movement and raises his arms, they keep trying to raise even after they've reached the top. The video showed that this normally doesn't happen.

[CRTGAMER]

Just to be sure, did the arms drop to the correct height before you took apart the arm housing assembly? If so, maybe something you did in the arm assembly, maybe the arms are not sitting correctly?

I don't think they did. Also, after watching another video, I noticed that when I turn him on, after he completes his left/right movement and raises his arms, they keep trying to raise even after they've reached the top. The video showed that this normally doesn't happen.

Okay, don't take apart that arm assembly again its such a pain to put together. From what you describe the arms are bottoming out when raising since they keep trying to go. Must be something inside the base that detects each end of travel.

I don't think there is a limit switch or torque switch to detect the end stops of travel. The reason why is when my modded ROB to direct control, I could bottom out past the normal travel. It must be something in the chip on the PCB of ROB that is detecting the travel thru timing or counting the motor pulses of the movement somehow. Maybe one of the wires broke loose from the PCB down at the base?

Sorry this is of not much help, maybe others can kick in some ideas?