RP6 ROBOT SYSTEM - APPENDIX
11. My battery charger does not charge the batteries inside the robot!
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Did you correctly connect the battery charger? Check polarities of cables,
and plugs.
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Did you correctly insert the batteries? Check for defective or loose contacts.
Check polarities of cables, plugs and batteries.
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Maybe the charger's plug fails to match to the inner pin of the charger con-
nector resulting in an open power connection? (Different versions of these
plugs exist, which usually may be interchanged without problems. Standard
battery chargers are supplied with an appropriate set of adapter plugs)
12. The ACS fails to reliably recognize obstacles!
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Did you already test various different ranges and power settings?
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Are the IR LEDs or the IR receiver misaligned? Check the alignment and ad-
justment of IR LEDs and the IR receiver. IR LEDs must be adjusted to almost
stick straight out of the sensor-board, but should be aligned to point out-
wards with an angle of approximately 5-10°. The IR receiver has to be
aligned straight 90° upwards (see photographs on this page and chapter 2).
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The ACS will often fail to detect black or very dark obstacles. Black objects
more or less tend to absorb IR light completely. This is normal physical be-
haviour! You may additionally have to use other sensor types (ultrasonic
rangers for example...) in order to make object detection reliable!
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The robot is operated in an environment with bright illumination, e.g. with
direct sun light, fluorescent lamps, or background illuminations of flat
screens. These light sources may disturb IR-communication and ACS.
13. The IRCOMM fails to receive my remote control's signals! The robot
does not react to these signals!
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Does your remote controller really transmit RC5 formatted signals? If you do
not know for sure, it probably does not. The software will only recognize the
RC5 format. You will have to switch the remote control to another coding
system (most universal remote controllers allow you to set an RC5 format)
or use another remote control.
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Key assignments may vary from type to type and from manufacturer to
manufacturer. Always start by assigning the keys for your program. The
comments in the RC5 example program source code provide you with
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