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Quanser Qbot: User Manual
the QUARC help QUARC Targets/User's Guide/Communications.
4.1.2.3. SW/nSW and INT/EXT Jumpers
The INT/EXT jumper switches the Qbot from internal power from the iRobot Create battery
(INT) and an external battery power supply (EXT). Note that no external battery is supplied
with the Qbot, so this jumper should be left in the INT position to power the Qbot. When
the power source jumper is in the INT position, the SW/nSW jumper indicates whether the
iRobot Create must be switched on (SW) for the Qbot to receive power, or whether the Qbot
should always draw power even when the iRobot Create is off (nSW).
4.2. Detailed Description of Qbot Components
4.2.1. Qbot DAC
The Qbot DAC is a data acquisition board, capable of receiving analog inputs and other in-
puts (for sonar sensors). It is also capable of writing PWM outputs for possible servo actuat-
ors. It is located underneath the black cover of the Qbot, and it is not intended for it to be
physically accessed.
4.2.2. USB Camera
The Logitech Quickcam Pro 9000 USB camera is mounted on top of the Qbot (Figure 6).
The QUARC block set that uses the Open Source Computer Vision library (in Section 5.3)
allows the user to capture and display images in real time, process them, and save them in a
disk for future analysis.
Figure 6: Camera
Document Number: 830 Revision: 7 Page: 6
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