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PROJECT BASICS
POWER SUPPLY
SENSORS
INTRODUCTION
LIGHT SENSOR
LDR
PRESSURE SENSOR
RELAY
CURRENT BUFFER
BIDIRECTIONAL CURRENT BUFFER
PARALLEL PORT
LEVEL SHIFTER
WIRELESS COMMUNICATION
PROJECT IDEAS
 

 

 

SENSORS

If system is to be made interactive with the user, then there is big role of sensors. A sensor is a device whose physical property changes in response to the excitations made by the user. But to detect these physical changes by the circuit, we need to convert those changes into electrical signals. The devices which convert the excitation into the electrical signals are transducers. The sensors are also part of transducers. The following are the sensors which are usually used in the application circuits:

    • Light sensor
    • Temperature sensor
    • Sound sensor
    • Piezo-electric sensor

     

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