How to make RF controlled Robot circuit Project

In present time all the people are familiar with robots.A robot  is a machine —especially one programmable by a computer— capable of carrying out a complex series of actions automatically. Robots can be guided by an external control device or the control may be embedded within.I am going to discuss a very interesting article on RF Controlled Robot which will work without using microcontroller.


RF Controlled

Components Required

  • DC Motor – 2
  • HT12D – 1
  • HT12E – 1
  • RF Pair – 1
  • Motor Driver L293D – 1
  • 9 Volt Battery – 3
  • Battery Connector – 3
  • Connecting wires
  • Robot Chasis – 1
  • 7805 – 2
  • 750K resistor – 1
  • 33K resistor – 1
  • 1K Resistor  – 1
  • PCB

DC Motor

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It is a device which converts electrical energy into mechanical energy.


RF Controlled







HT12D is a 212 series decoder IC (Integrated Circuit) for remote control applications. It is commonly used for radio frequency (RF) wireless applications.


RF Controlled






HT12E is an encoder IC ( integrated circuit ) of 212 series of encoders. They are paired with 212 series of decoders for use in remote control system applications. It is mainly used in interfacing RF and infrared circuits. HT12E converts the parallel inputs into serial output. It encodes the 12 bit parallel data into serial for transmission through an RF transmitter.

RF Pair

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An RF module (radio frequency module) is a (usually) small electronic device used to transmit and/or receive radio signals between two devices.In an embedded system it is often desirable to communicate with another device wirelessly.

Motor Driver L293D

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L293D is a typical Motor driver or Motor Driver IC which allows DC motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction.


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A container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.

Battery Connector

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A battery connector, is an electro-mechanical device used to join electrical terminations and create an electrical circuit. Electrical connector consist of plugs (male-ended) and jacks (female-ended).

Connecting wires

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A wire is a single, usually cylindrical, flexible strand or rod of metal. Wires are used to bear mechanical loads or electricity and telecommunications signals








7805 IC, a voltage regulator integrated circuit (IC) is a member of 78xx series of fixed linear voltage regulator ICs used to maintain fluctuations.


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It is a device having resistance to the passage of an electric current.



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RF Transmitter:

RF Controlled

RF Reciver:

RF Controlled



The RF controlled Robot have two main parts:-

  • the transmitter part &
  • the reciever part

In transmitter part a data Encoder and a RF transmitter is used.When we will press any button (as shown fig) encoder will get a digital LOW signal and then applied this signal serially to RF transmitter. The Encoder IC HT12E encodes data or signal or converting it into serial form and then sends this signal by using RF transmitter into the environment.

RF Controlled

At the receiver end we have used RF receiver to receive data or signal and then applied to HT12D decoder. This decoder IC converts the received serial data to parallel and then send these decoded signal to L293D Motor driver IC. According to the received data robot runs by using two dc motor in forward, reverse, left, right and stop direction.

RF Controlled

RF Controlled Robot works by pressing the bottons given on transmitter as shown in the table below:

RF Controlled


So now your Project is Ready to work,Keep enjoying this project.

So, Friends I hope you understand this project very well . In upcoming Tutorial  I will be back with some new interesting Projects and we will discuss about some useful development topics. Here if you want to recommend that what I should write in upcoming Tutorial then please leave your comments. and if u need any help or query please don’t Hesitate to discuss with me. Thank You  🙂


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