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Projects
PROJECT BASICS
POWER SUPPLY
RELAY
CURRENT BUFFER
BIDIRECTIONAL CURRENT BUFFER
PARALLEL PORT
LEVEL SHIFTER
WIRELESS COMMUNICATION
TX433 & RX 433
ENCODER (HT12E)
DECODER (HT12D)
Calculating the value of RESISTANCE
PROJECT IDEAS
 

 

 

WIRELESS MODULE

The wireless module is actually a pair of wireless receiver and transmitter circuits. There are only few frequency bands (ranges) which we are allowed to use legally. One of those frequencies is 433Mhz. Based on 433MHz transmission frequency, we have the transmitter and the receiver circuits as TX433 and RX433.

The transmitter and the receiver are based on amplitude modulation (AM).

 

RANGE of transmitters:& Circuit diagram: i.e. pin description ARE TO BE UPDATED SOON

 

To use these receiver and transmitter circuits we also need to encode the data at the transmitter and he decode the data at the receiver to protect the data from the noise. Hence we use HT12E and HT12D which are the encoder and decoder ICs. Now we discuss the working of the both:

 

 

 

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