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Kraig Class101
7th August 2011
KRAIG PAPER DISCUSSION
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Revision Parts Of A Mobile Robot Basic Electronic Components Locomotion System Rectifier Circuit DC Motor H Bridge Sensor Interfacing Line Following Duty Cycles
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Locomotion System
As the name suggests a mobile robot must have a system to make it move
This system gives our machine the ability to move forward, backward and take turns
It may also provide for climbing up and down
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Driving Mechanisms Differential Drive Skid Steer Drive Car type – Drive Articulated Drive Synchronous Drive Pivot Drive Dual Differential Drive
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DC Motor Direction Control H – Bridge Circuit Diagram
S1
S3
S2
S4
M1 2
VCC
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H – Bridge Working
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Sensors Analogous to human sensory organs Eyes, ears, nose, tongue, skin Sensors help the robot knowing its
surroundings better Improves its actions and decision making
ability Provides feedback control
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LDR - Light Dependent Resistor Made of cadmium
sulphide Resistance between two
terminals vary depending on the intensity of light
Can be used to differentiate contrast colours
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Comparator
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Light Sensing Module using LED-LDR combination
Sensor Interfacing
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Bump Detector Module
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LM339 Pin Diagram
THANK YOU
