Rob-bot
USA
Asked
— Edited
Resolved by ptp!
Hi All, I am working on a wheelchair based robot that utilizes 2 24 VDC motors and will be controlled by EZ B V4 controller and a Sabertooth 2X32 motor controller. The problem Im having is that when I hook up the positive 24VDC line to the Battery + terminal I get positive potential through all remaining terminals. So, basically if I put a volt meter probe on the detached negative and the other on and sabertooth controller terminal I get 24VDC, which I think would cause a short. I tried calling and emailing Sabertooth Tech support with no response for a couple of days, so any help at all is highly appreciated ?
Thank you.
Regarding the motor fuse if you put a fuse of 10 amps, and your motor is stalled, the amps will go up and the 10 fuse blow up.
If you don't have the fuse the Sabertooth will cut the power when the safe limit is reached for your model.
This can be an "operational problem" replacing fuses every time your bot gets stuck...
To avoid that check the sabertooth manual.
Set the motor limit below the motor fuse, that way the fuse will help you with catastrophic or multiple failures e.g. (motor controller, motor stalled etc etc)
Ok, I just got home and checked the resistance between B+ & B- and the initial reading is approx. 5 mega ohms and slowly drops. And this seems to be the same reading on all terminals to the B+. Does this mean it should be safe to connect the negative? Or will it short circuit? Thanks.
It's OK.
Ok, will try hooking up the negative and pray for the best. I'll keep ya posted either way. Thanks.
So far, so good. I hooked up the negative and it seems like it's fine I have the LEDs blink 4 times, but no response from the controller. Right now I have the dip switches set for radio control mode for testing purposes.and I'm not getting any response I just get the 4 blinks on the two LEDs. Any ideas?
You need to set it to simplified serial to use the ARC Sabertooth control.
Even though I want to test with RC control 1st?
@Rob-bot Are you using an RC radio in RC mode? That will work. However with the EZB4 as Alan mentioned you need to use simplified serial...