Manual

Troubleshooting
Some common problems and solutions.
My system does not stop when doing a Mechanical
Stop tune. The wheels slip instead.
If the stops can’t prevent the mechanism from
moving, you will need to use limit switches
instead.
My system moves REALLY fast in the middle of the
teach tune cycle.
The system is trying to figure out how fast it can
go, so this is technically correct. However, using a
smaller teach tune range will prevent it from
moving so fast.
I’ve used my Sabertooth before, and I can’t seem
to get a decent tune. The tune either fails, or the
motion isn’t smooth.
If you used the DEScribe software to change the
motor driver, this can cause problems. Use the
software again to set ramping, exponential,
deadband and timeouts back to the factory
defaults before using Kangaroo x2. Also, be sure
the baud rate for the Sabertooth is set to 9600
baud.
It seems like my system should be going faster.
By default, the controlled speed is set to 75% of
the theoretical max speed for the system. Turn the
speed limit potentiometer for the channel up. If
you are using a very high resolution encoder (1000
lines or more) you may need to switch to a lower
resolution. The kangaroo internally limits the
maximum count rate.
My system moves too fast.
Turn the speed limit potentiometers down. If you
are using a serial mode, send a combined position
and speed command.
Kangaroo doesn’t seem to like my encoder
Some encoders need stronger external pull-ups to
give good signal levels. This is especially true for
magnetic encoders. See you encoder’s datasheet
for more details. If you don’t have a datasheet, try
adding a 1k ohm pull-ups between each
quadrature channel and 5V.
I can’t reprogram my Arduino when connected to
Kangaroo x2.
If you are using hardware serial on an Arduino, it
may not share the serial port properly for
reprogramming. Use software serial on other pins
instead, or disconnect the Kangaroo while you
reprogram the Arduino. Newer Arduinos like the
Arduino Leonardo do not have this limitation.
I can’t make Kangaroo x2 work with my Sabertooth
2x5.
By default, Sabertooth 2x5 in packet serial uses
38400 baud instead of 9600 baud. The Dimension
Engineering website has PC utility for changing the
setting.