
g0bco
United Kingdom
Asked
— Edited
Hi All
I have a sabertooth 2x32 which will run using the standard Movement Panel and coded scrips. This means I have no control of the speed unless I change the code or the ramps in sabertooth.
When I use the sabertooth Movement Panel only one motor drives forward and sometimes not in reverse. I read that this Movement Panel needs some changes, but how to config the panel is past me.
Can anyone help?
I have read the manual and a lot of the other posts to try to get it working. I notice under the tab of wiring that you quote connecting the 5v grd and s1 to the ezb4, I dont understand when the 5v is output only.
I have now obtained the KANGAROO adapter for the sabertooth and some motors with encoders, which Movement Panel should I use to control the two motors? I am building a DR WHO K9 with a differential drive and have noticed that when I tried to use a h-bridge with two small motors that turning ws impossible as it needed more power on the turn, bigger motors were too fast. The encoders should I hope compensate for the torque neded when turning and good speed control in a straight line.
Your comments would be very helpful.
If you’re using the Sabertooth motor controller, you’d use the Sabertooth Movement Panel from my previous link. I don’t have experience with a kangaroo or how it works with wheel encoders. The only experience I had with some people using a kangaroo was to build custom servo-like behavior from motorized joints.
Does the kangaroo control the Sabertooth by counting wheel rotations to help the robot drive straight? What does the kangaroo do for a Sabertooth with wheel encoders?
Edit. Actually I found it https://synthiam.com/Question/8542
Lets hope that the Sabertooth and the Kangaroo combined work so that I can have complete control over speed and direction.
I also added resistors and they seemed to help a lot in completing a successful tune. If I remember correctly DE recommends to add them if your encoder is a long distance away from the Kangaroo. It's in the kangaroo manual if you want to check.
Silly me I thought I ordered motor/gearboxes with encoders....however the motors drives the bot quite well using sabertooth as a custom movement panel.
I have a 50 amp h-bridge coming from that online auction place, as per a certain snow plough built by the boss. that should overcome the control problem I have been having.
The sabertooth and kangaroo now seems to work on some small angled motor/gearboxes I intend to use for other functions in the bot. Using the DEscibe software tune function the procedure is very easy and then a servo panel on the ezb4 will contol the motor/gearbox according to the tune settings.
Thanks to everyone who has commented, very useful.