Mini Project Report

OnRF Controlled DC Motor

Fifth Semester B.E. (Electronics Engineering)Section-B

byNikhilesh GuptaMitesh Agrawal

Under the guidance ofMs.Y.A.Gaidhani

Department of Electronics Engineering

Yeshwantrao Chavan College of EngineeringWanadongri, Hingna Road, Nagpur – 441 110

March 2011

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Certificate

This is to certify that the following mentioned students have successfully completed their project on RF Controlled DC Motor in the Electronic Workshop laboratory as per the rules of the college satisfactorily in the year 2010-2011.

Subject: Electronic Workshop

Branch: Electronics Engineering

Year: 3rd – 6th Sem

The Students are:

1) Nikhilesh Gupta2) Mitesh Agrawal

Signature of Project guide

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ACKNOWLEDGEMENT

We humbly acknowledge the support and constant guidance provided by our project guide Ms.Y.A.Gaidhani. We also thank our college and our respected principal.

We appreciate and thank our project guide for their valuable advice, their constant assistance and immense patience.

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INDEX

1) Introduction2) Components used3) Circuit diagram4) Description & Working5) PCB Layout6) Reference

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Introduction

The following project is based on wireless communication in RF range. It includes wireless ASK RF Module of 315 MHz / 433 MHz frequency which is used for communication and L2393D Motor Driver IC which is used for controlling the direction of Motors.

The 4 Bit Binary data is transmitted using ASK RF transmitter Module and correspondingly same data is received by ASK RF Receiver Module.

Thus the interfacing of motor driver IC with Wireless communication Modules completes the structure of RF controlled motor.

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Components used

ASK Module (433MHz / 315MHz) IC’s:-

a. LM293d (Motor Driver)– 1b. HT12D (Decoder)– 1c. HT12E (Encoder)– 1d. 7805 (Voltage Regulator 5V)– 2

LED’s - 4 Resistors:-

a. 51 k - 1b. 1000 k - 1c. 330 E – 4

Capacitors:-a. 1000 uF – 2b. 10 uF – 4c. 104 pF - 2

Battery Snaps – 2 Battery 9V – 2 Copper Clad – (8 x 6) and (10 x 7) Solder Iron, Wire, and Flux Motor

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Circuit Diagram

1. Receiver Circuit

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2. Transmitter Circuit

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Description & Working

The circuitry consist of two parts viz.,

Transmitter

Receiver

Transmitter:

It consists of A-434 Transmitting module and HT12E encoder IC. The pin no 17 that is Dout of IC is given to pin no 2 of module so that serial transmission is enabled. Pin 1- 8 of IC HT12E is grounded so as to generate a binary address of 00000000b. Pin no 9 is ground and pin no 18 is +Vcc. The pin no 14 (transmission enable) /TE is grounded to enable the transmission. Pin 10 – 13 act as data pins to which push button switches are connected. Pin no 4 of A-434 transmitting module is Antenna having a maxima length of 17 cm. A 750K resistance is connected b/w pin 15 – 16 of HT12E encoder IC to generate the frequency oscillations of transmission.

Receiver:

It consists of 8 pin A-434 ASK receiver Module and HT12D decoder IC. Pin 7 of module is data pin is connected to pin 14 of IC (Din). Pin 1- 8 of IC HT12D is grounded so as to generate a binary address of 00000000b. Pin no 9 is ground. Pin no 18 is +Vcc. Pin 10-13 are Data pin which give the output (the data transmitted). Led is connected to pin no 17 through a resistor of 330 ohm. This glows when there is a valid transmission. The 1st pin of Receiver module is the antenna. Whose max length is 17cm. the 33k resistance is connected between pin no 15-16 so as to generate frequency for the data receiving.

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PCB Layout

Transmitter

Receiver

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Reference

www.bootskool.com

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