Another option might be to use a pressure sensor or a lever switch. This is what I'm still looking to do for CY. The idea is to have the object being gripped press against a sensor which sends a signal back to the EZB and the software would then tell the gripper servo to stop moving.
@RoboHappy ... Unless you "release" the servo there is no easy way to stop it, A pressure or lever switch may tell you contact was made, but how do you tell a servo to stop where it is unless you release it? You could write a script that "steps" a servo one position at a time in a loop but that would be kind of crude IMHO...
Unless you "release" the servo there is no easy way to stop it, A pressure or lever switch may tell you contact was made, but how do you tell a servo to stop where it is unless you release it? You could write a script that "steps" a servo one position at a time in a loop but that would be kind of crude IMHO...
I actually have scripts that do just that for my Roli claws (although I don't currently have feedback, the script just executes as long as I have a key or joystick button depressed. Putting some kind of pressure feedback is the next step). Works pretty well, although if I recall I am stepping 2 or 3 steps when closing and 5 when opening.
If I remember I can post the scripts when I get home, or just look for Myroli-MKii project on the cloud. The claw controls are in the script manager.
WolfTronix is working a servo control board with force feedback. He said other projects got in the was of completing this but it's going to be available soon:
Yes exactly. A script that would either release or stop. Even stepping it is a good idea. When I get the time, I do plan on revisiting this plan because I also want to add a small IR sensor to detech when an object is within the claws of the gripper. I did something like this some years ago with dc geared motors so hope to see what a servo will do too.
yikes I looked at the price of those dynamixel servo's, and all I can say is... Thanks again EZ-robot for making robotics fun AND affordable!
Another option might be to use a pressure sensor or a lever switch. This is what I'm still looking to do for CY. The idea is to have the object being gripped press against a sensor which sends a signal back to the EZB and the software would then tell the gripper servo to stop moving.
@RoboHappy ... Unless you "release" the servo there is no easy way to stop it, A pressure or lever switch may tell you contact was made, but how do you tell a servo to stop where it is unless you release it? You could write a script that "steps" a servo one position at a time in a loop but that would be kind of crude IMHO...
I actually have scripts that do just that for my Roli claws (although I don't currently have feedback, the script just executes as long as I have a key or joystick button depressed. Putting some kind of pressure feedback is the next step). Works pretty well, although if I recall I am stepping 2 or 3 steps when closing and 5 when opening.
If I remember I can post the scripts when I get home, or just look for Myroli-MKii project on the cloud. The claw controls are in the script manager.
Alan
I wish that this was not discontinued. may have been interesting to mess with
Link
Aaron
WolfTronix is working a servo control board with force feedback. He said other projects got in the was of completing this but it's going to be available soon:
Review of this board and servo feedback system
For some reason the EZ Robot YouTube attachment tool isn't working for this video so here's the link to a vid showing this board:
https://youtu.be/2gXBWEkjcMs?list=PLQdu_G7xyFIQwE8RSTNcM2FJCxGKkiW9n
Yes exactly. A script that would either release or stop. Even stepping it is a good idea. When I get the time, I do plan on revisiting this plan because I also want to add a small IR sensor to detech when an object is within the claws of the gripper. I did something like this some years ago with dc geared motors so hope to see what a servo will do too.