hardware wrkshp c [compatibility mode]

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ABOUT HARDWARE FROM:JJ/2009/PART2

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Hardware Wrkshp C [Compatibility Mode]

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Page 1: Hardware Wrkshp C [Compatibility Mode]

ABOUT HARDWARE

FROM:JJ/2009/PART2

Page 2: Hardware Wrkshp C [Compatibility Mode]

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

Page 3: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 4: Hardware Wrkshp C [Compatibility Mode]

Application of IR Tx and Rx Module•obstacle sensing, •color detection, •fire detection, •line sensing,

FROM:JJ/2009/PART2

Page 5: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 6: Hardware Wrkshp C [Compatibility Mode]

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

Page 7: Hardware Wrkshp C [Compatibility Mode]

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

Page 8: Hardware Wrkshp C [Compatibility Mode]

•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

Page 9: Hardware Wrkshp C [Compatibility Mode]

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

Page 10: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 11: Hardware Wrkshp C [Compatibility Mode]

Transformer + Rectifier

Transformer + Rectifier + Smoothing

FROM:JJ/2009/PART2

Page 12: Hardware Wrkshp C [Compatibility Mode]

Transformer + Rectifier + Smoothing + Regulator

FROM:JJ/2009/PART2

Page 13: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 14: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 15: Hardware Wrkshp C [Compatibility Mode]

Positive fee backPhase shift :Capacitive element =180 degreeInverting amplifier =180 degreeTotal =360 degree

FROM:JJ/2009/PART2

Page 16: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 17: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 18: Hardware Wrkshp C [Compatibility Mode]

FROM:JJ/2009/PART2

Page 19: Hardware Wrkshp C [Compatibility Mode]

THANK YOU

FROM:JJ/2009/PART2