NEX ROBOTICS Fire Bird V ATMEGA2560 Software Manual page 73

NEX Robotics
Note:
1. Make sure that in the configuration options following settings are done for proper operation of
the code
Microcontroller: ATMEGA2560
Frequency: 14745600
Optimization: -O0
(For more information read section: Selecting proper optimization options below figure
2.22 in the software manual)
It is observed that external interrupts does not work with the optimization level -Os
2. Auxiliary power can supply current up to 1 Ampere while Battery can supply current up to 2
Ampere. When both motors of the robot changes direction suddenly without stopping, it
produces large current surge. When robot is powered by Auxiliary power which can supply only
1 Ampere of current, sudden direction change in both the motors will cause current surge which
can reset the microcontroller because of sudden fall in voltage. It is a good practice to stop the
motors for at least 0.5seconds before changing the direction. This will also increase the useable
time of the fully charged battery.
www.nex-robotics.com
Fire Bird V Software Manual
73