pacomms
Hi there, so i have managed to get a BV4113 H Bridge, i have installed latest firware and connected as per your diagram on the tutorials page, i have a pretty significant issue however, i have opened up a new project and i only have the BV4113 Movement Panel active, i connect to the bot fine but the issue is that if i now press one of the movement buttons nothing happens at all, however if i disconnect the BV4113 from the EZb and then reconnect it it works perfect, even if i disconnect and reconnect to the ezb via bluetooth its fine until i turn of the ez b, when i power back on same issue no movement, until i disconnect the BV4113 and reconnect it, then its fine again, its like this every time, it is as if the BV4113 requires a reset or resync b4 it will work, this is ok when my bot is opened up but when everythings inside i cant get to the board to unplug it and plug it back in again, any ideas ?
Thanks Kurt (NB i have double triple checked my connections, i have even tried toggling D0 on and off but even that doesnt work, i have to manually disconnect it then reconnect and its ok)
@pacomms you technically can add a modified servo panel, set the ports to NA and use the script panel. The problem is with the script execution time is slower than the MS response time needed for a Movement Panel reaction.
I emailed Sabertooth, they were not willing to donate a board for development. I don't support products that don't support EZ-Robot.
As for the Sabertooth, if it doesn't like the pulse width of a modified servo panel to be in R/C mode, then try something for me.
Connect your sabertooth module in R/C mode.
Add 2 standard vertical servo controls (one or each motor)
Set the vertical servo controls to the ports the sabertooth is connected to
Slide the dials and tell me what the maximum and min values are of when the motors move.
Maybe i'll consider adding support for the sabertooth pulse width when i have time.
So is there likely to be a solution to the new H Bridge situation beyond needing to unplug the connection every time? I have one on order but that solution won't work for what I've got planned.
:(
Hi DJ thanks for the response, so i have done what you said and the results are as follows, setting the slider at 35 stops the motors, setting to 51 gives full power forwards and setting to 20 gives full reverse. as for just starting to move in the forward direction it just starts moving at 44, and reverse is 27. I understand regarding sabertooth, they are hard to deal with, i emailed them twice and got 1 canned response saying that the micro controller must be putting out incorrect pulse widths which i know is rubbish, end user support from them is nil to be honest which is a shame as it is a good solid product to be honest i have used it in a few projects, its just the Movement Panel issue is all, without a Movement Panel that doesnt need scripts etc etc i cant use the sweeping sonar module, nor the colour tracking proper, small issue i know but hey ho i just like everything to work ;-), if you could maybe put a panel in for it i would be eternally grateful and i will come round and do your housework for a month, well if i lived in canada i would anyways lol
Regards Kurt
working on it
Great :-)
I'll modify the modified servo Movement Panel to allow specifying values for the controller.
It'll be in the next release. your sabertooth will work flawlessly with the modified servo movement panel
Thats Perfect DJ that will be great :-)
Thanks Kurt
Has there been any movement on this issue? I got the motor controller to work a couple of times, after extensive connecting/disconnecting- but now it won't do anything.