Search found 8 matches
- Tue Aug 16, 2016 1:15 pm
- Forum: Velocity and Position Control
- Topic: Mixing position and speed/distance commands
- Replies: 4
- Views: 7465
Re: Mixing position and speed/distance commands
I would like to be able to: 1: Stop the "hold position" effect of the position command. 2: Abort a position command that is currently executing. It seems that I can do 1 by executing command 34 "duty cycle" with argument 0 with no ill effects if the motors are already stopped. I ...
- Sun Aug 14, 2016 12:29 pm
- Forum: Velocity and Position Control
- Topic: Mixing position and speed/distance commands
- Replies: 4
- Views: 7465
Re: Mixing position and speed/distance commands
After some more experimenting: When command 67 fails it always seems to drive M1 or M2 at full speed in the wrong direction for one or a few seconds. Then the Roboclaw seems to recover. The misbehaving motor suddenly reverses direction and drives at normal speed until it reaches the correct position...
- Sat Aug 13, 2016 1:35 pm
- Forum: Velocity and Position Control
- Topic: Mixing position and speed/distance commands
- Replies: 4
- Views: 7465
Mixing position and speed/distance commands
I'm having some problems with the drive to position command (67). It works perfectly by itself, but when I mix it with speed and distance commands (i.e. commands 43 or 37) the motors can suddenly go to full speed. It happens rarely, maybe 1 out of 10 times. It's command 67 that causes this, but only...
- Thu Jul 21, 2016 11:47 am
- Forum: General Discussion
- Topic: Minimum Logic Battery Voltage
- Replies: 22
- Views: 26020
Re: Minimum Logic Battery Voltage
In that case it really sounds like I should remove the regulator. I don't want it to fail later. I did this and now I have a green light when I feed regulated 5V to the +5V rail, so I'm happy. I have to say to say it's unusual with products that have support forums as good and as active as this one....
- Wed Jul 20, 2016 8:56 am
- Forum: General Discussion
- Topic: Minimum Logic Battery Voltage
- Replies: 22
- Views: 26020
Re: Minimum Logic Battery Voltage
Yes, I'm trying to bypass the onboard 5v regulator, but that doesn't work due to bleed through to the LB IN + pin. You then claimed that the 5v regulator is broken, but I say it isn't, because if I power the board through LB IN instead of through the +5V rail the regulator works just fine. It wouldn...
- Mon Jul 18, 2016 10:44 am
- Forum: General Discussion
- Topic: Minimum Logic Battery Voltage
- Replies: 22
- Views: 26020
Re: Minimum Logic Battery Voltage
It doesn't look like a short. I can find no problems with the board. The 5 V rail is very stable at 5.00 V regardless of battery voltage (supplied the normal way, i.e. LB IN). The current consumption is 30 mA at 10 V (a little higher at lower voltage). This is a new unit, not used much at all. I pro...
- Sat Jul 16, 2016 5:47 am
- Forum: General Discussion
- Topic: Minimum Logic Battery Voltage
- Replies: 22
- Views: 26020
Re: Minimum Logic Battery Voltage
When you power the board from the middle pin of S1(eg the 5v rail) you must remove the LB/MB jumper, as you did. Then there is no direct connection from the 5v rail to the BEC circuit. However there may be bleed through or inductive coupling which could cause the LB+ pin to float up to 5v(usualyl i...
- Sun Jul 03, 2016 11:08 am
- Forum: General Discussion
- Topic: Minimum Logic Battery Voltage
- Replies: 22
- Views: 26020
Re: Minimum Logic Battery Voltage
It seems that this trick doesn't work. I have a Roboclaw 2x15A V5. If I put regulated 5 V on the middle S1 pin (LB/MB jumper removed) the LB IN + pin will not float. Instead it will be close to 5 V and there is no way I can pull it low. Is there maybe a trace somewhere I can cut to disable the BEC v...