Monthly Archives: October 2012
During early days of mine as an electronic hobbyist, the wireless communication had always
got me excited . Afterall, who wouldnot grow tired of those tangling wires of wired bot. 😛 So i got the cheapest rf module available in the market, without knowing much about it. 😛
So this is a simple project for the beginners who are going to use rf modules for the first time. Here, the signals are generated by the user via push buttons and is sent to the receiver module kept at a distance.
Let us grasp some basic information on the working of a RF- module.
These RF modules work between 30Khz-300 Ghz. In our case, it’s frequency is around 400Mhz-500Mhz (434 MHz approaximately). The digital data is represented as the variations in the amplitude of the carrier signal according to the message signal (known as ASK).It receives serial data and transmits it wirelessly through RF through its antenna. The transmission occurs at the rate of 1Kbps – 10Kbps.The transmitted data is received by an RF receiver operating at the same frequency as that of the transmitter.