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Hardware Wrkshp C [Compatibility Mode]
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ABOUT HARDWARE
FROM:JJ/2009/PART2
Working IR Tx and Rx Module
Working Motor driver module
Power supply for Microcontroller
Oscillator for Microcontroller
Reset circuitry for Microcontroller
Matrix Key Board 4x4
LCD in 4 Bit mode
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
Application of IR Tx and Rx Module•obstacle sensing, •color detection, •fire detection, •line sensing,
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
How does DC Motor work ???
Motor driver is basically a current amplifier which takes a low-current signal from the microcontroller and gives out a proportionally higher current signal which can control and drive a motor. >Output current up to 1.2A>Supply voltage can be as large as 36 Volts>over temperature protection" built into the IC.>This flyback diode helps protect the driver IC from voltage spikes that occur when the motor coil is turned on and off>The logical low in the IC is set to 1.5V.> high frequency applications upto 5KHz
FROM:JJ/2009/PART2
Require more current then the microcontroller pin can typically generate
Transistor as a current amplifier to provide required current to drive the motor
FROM:JJ/2009/PART2
•Turning on Switches A and D makes the motor rotate clockwise•Turning on Switches B and C makes the motor rotate anti-clockwise•Turning on Switches A and B will stop the motor (Brakes)•Turning off all the switches gives the motor a free wheel drive•Lastly turning on A & C at the same time or B & D at the same time shorts your entire circuit. So, do not attempt this.
FROM:JJ/2009/PART2
High ~+5V, Low ~0V,
>Pin2, Pin7, Pin10 and Pin15 are logic input pins. These are control pins which should be connected to microcontroller pins.
>Pin2 and Pin7 control the first motor (left); Pin10 and Pin15 control the second motor(right).
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
Transformer + Rectifier
Transformer + Rectifier + Smoothing
FROM:JJ/2009/PART2
Transformer + Rectifier + Smoothing + Regulator
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
Positive fee backPhase shift :Capacitive element =180 degreeInverting amplifier =180 degreeTotal =360 degree
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
FROM:JJ/2009/PART2
THANK YOU
FROM:JJ/2009/PART2
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