Datasheet

Construction manual for robot kit NIBObee 01.12.2014
3 Preparation for operation
After finishing the preparations the NIBObee can now be activated step by
step for the first time.
!! Important !!
The NIBObee must never be switched on without inserted IC3 (74HC139),
otherwise the transistors for the motor-control will be destroyed!
1. Switch-off the NIBObee
2. Take off the jumper JP7
3. Insert 4 x Micro AAA 1,2V rechargeable batteries
Now the NIBObee has to be switched on, then the green LED6 near to the
switch must flash.
It is possible that the yellow and the red LEDs are now also glowing. We will
use them for the further tests:
3.1 Floor sensors test
Now the NIBObee is placed on a white sheet. Then both red LEDs (LED1
and LED2) should flash. Holding the NIBObee in the air, these two LEDs
should not glow.
3.2 Testing and adjustment of the odometry sensors
In this chapter we want to test the functionality of the odometry sensors.
Further it should be tested whether the photo-transistors are able to detect
the turns of the wheels. The sensitivity must be adjusted with the
potentiometer R29. This can be done with the help of a small recessed head
screwdriver. The sensitivity is correctly adjusted if turning the right wheel
causes the yellow LED3 to flash and turning the left wheel causes the
yellow LED0 to flash.
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