KRAIG KRAIG 102 102
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KRAIG PAPER DISCUSSION 7th August 2011
Revision – Intro Workshop
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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Revision – KRAIG 102
Locomotion System Driving Mechanisms H-Bridge Sensor Interfacing LED-LDR Circuit
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LM339 4th September 2011
Comparator
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Comparator ICs
LM339, LM393 and LM311 They consist of more than one comparator. LM311 consists of single comparator
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LM393
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LM339
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LM339
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LM339 Pin Diagram
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Sensor Interfacing

Light Sensing Module using LED-LDR combination www.robotix.in
Final Circuit
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Final Circuit
Circuit has 4 sensors Each is connected to a comparator of the IC Each should have its own potentiometer for thresholding
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DC Motor Direction Control
H – Bridge Circuit Diagram VCC
S1 S3
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S2 1
M
2
S4
H – Bridge Working
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L293D
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L293D
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AUTONOMOUS ROBOTS What does autonomous mean?
Line Following 
How many LED-LDR pairs are required to create an autonomous line following robot?
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Line Following with two Pairs
THANK YOU