This Module is very cost efficient where long range RF communication is required. There we have to need only one antenna externally for this module. This module has a crystal stabilized oscillator for maintain accurate frequency control for best range. This is a ASK Hybrid Transmitter and receiver module operates at 433Mhz frequency. L293D has Two inbuilt Transistor Darlington pair for current amplification and an separate power supply pin for giving external supply for motors. L293D is a motor driver IC which has two channels for driving two motors. All these tasks will perform by using four push buttons that are placed on RF transmitter. This transmitter part will transmit command to robot so that it can do the required task like moving forward, reverse, turning left, turning right and stop. A transmitting device is used in your hand which also contains a RF Transmitter and a RF Encoder. Here we only need to push the buttons to control the robot. RF controlled robot is controlled by using Four push button placed at transmitter side. Here we will run it directly by RF Decoder and Motor Driver. Interesting thing in this project is that it will run without using any microcontroller. In Our previous Projects we have made some robots like line follower, DTMF controlled robot, gesture controlled robot, computer controlled robot, but in this tutorial we are going to design a very interesting robot, that is RF controlled Robot. Robots are a machine which reduces the human efforts in heavy works in industries, building etc. Robots play a very important role in human life. In present time almost all the people are familiar with robots.
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