Martinl3
USA
Asked
— Edited
Resolved by Robot Doc!
Hello, I am reporting an issue that I have come across with the claw on the robotic arm. The claw seems to have stopped working. The gear on the back of the robot is starting to open exposing some of the internal parts of that gear. whenever we try to manually close the claw it springs back open. If someone could reply asap it would be much appreciated.
A photo or two would help in determining a solution to your issue.
What sort of robot claw do you have? It almost sounds like the toy claw arm (the sort that looks like the B9 Lost In Space robot claw (*even though that claw was a little different)) and has a handle on it. If it is like that the spring inside the claw forces the claw open. Pulling the handle pulls a metal bar attached to the middle part of the claws forcing it to close. If this bar has come lose or snapped nothing is available pull the claws shut internally.
Please explain which claw you have and post pictures.
Is this the same claw you have already asked about previously?
Rich- Yes it is the same arm I have talked about previously. Hopefully these photos I attached can better explain what I am experiencing. I have added a material called polymorph to help with the closing of the claw but just today, the claw stopped working. It used to be able to open and close but not fully.
These videos were taken after we programmed the robot and that was when my team and I encountered that the robot won't fully open and close. Now it wont even function.
OH, OK. Not the claw I was picturing. I believe your servo can not move any further. Consider the server has a limited range of motion, probably 180 degrees. If you have been experimenting and took the servo off the gripper you likely repositioned the servo so it can not open all the way. When this happens to me, I take the servo off, manually adjust it (or via script
) to the center position, then reattach it. You should see a full range of motion again, based on what I am seeing in your video.
@Matrin13 thanks for the photos and the videos. As @JustinRatiff mentioned it may be your servo has shifted out of its normal area of control. It would be best to disconnect the servo from the claw mechanics and then make sure there is no mechanical reason for the claw not fully closing or opening. Once that is verified then you can re-center the servo position with the claw.
The servo that works for the claw can't be removed. I have tried but it looks welded on to a piece of metal from the gear. Plus the other servos I have are to big. The claw servo is 2x smaller than the normal ones that come along with the kit. I have no idea what to do now confused.