NEX ROBOTICS Fire Bird V ATMEGA2560 HEXAPOD User Manual page 15

Instructions for the battery charging:
For battery charging instructions refer to "Lithium Polymer Balance Charger NR-BLIC-03, NEX
Robotics.pdf" which is located in the "Manuals and Application notes" folder in the
documentation CD.
Two cell and three cell battery packs from the NEX Robotics has different types of connectors.
These batteries will go only in the correct type of connector of the Battery Charger.
Warning:
• Do not charge 2 cell and 3 cell batteries at the same time.
• Charge batteries which can handle 650mA charging current.
• If battery is hot or slightly warm then allow it to cool down completely before charging.
• Do not open battery packs and modify them. Modified packs will not have matched
impendence, which can lead to dangerous situations.
• Always charge batteries in open space of at least 10feet x 10feet on the concrete floor.
• Do not charge battery near flammable liquids.
• While charging put batteries away from children.
Important:
Never ever allow battery to discharge below 3.3V per cell i.e. 6.6V for 2 cell battery packs or
9.9V for 3cell battery packs. After this critical value battery voltage falls very rapidly. Robot will
start giving battery low warning after battery voltage reaches 6.6V. Battery charger will not
charge any deep discharged battery pack and it will indicate fault condition. This is done for the
safety reasons.
3.3 Running the robot
Servo motors are quite delicate. To protect them from overload take robot in your hand then turn
it on. Once legs are powered put it down. When program is being loaded on the robot, its legs
can make sudden moves. . If you are not sure about your code, put the robot on the CD box
before turning it ON or while programming, to avoid damage to the servo motors.
Figure 3.5: Robot kept on the 50CD box while being programmed
© NEX Robotics Pvt. Ltd. and ERTS Lab IIT Bombay, INDIA
Fire Bird V ATMEGA2560 Hexapod Robot User Guide
15