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S.No
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Products |
Current Price (Rs)
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1
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DC Motor Controller
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1150
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2
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Moving Message Display
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2150
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3
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Microcontroller Based Solar Charger
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1150
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4
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Microcontroller-Based Speedometer Cum Odometer (0811)
This project describes how to build a digital speedometer-cum-odometer for your motorbike. The features of the project are digital readouts for speed in km/hour and distance in kilometres, economical and easy to construct. It is a better alternative to the mechanical speedometer and even a beginner with minimal skill level can assemble it. The circuit uses an AT89C2051 microcontroller, a 16x2 LCD display, 4N35 optocoupler, 24C02 EEPROM and some easily available components.
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1000
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5
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CHIP-TALK Hobby Projects
CHIP-TALK Hobby Projects package include components and PCBs of 40 fully tested projects and a book. The book contains the fundamentals of electronics and 40 tested circuits and their descriptions. |
1990
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6
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Microcontroller Based Heart Rate Meter (0805)
This project is used to count the heartbeat or pulse rate using a light source (6V torch bulb) on one side of the finger and observe the change in light intensity on the other side. A tube contraption is used to detect the blood flow in the finger. The blood flow causes variation in light intensity reaching the light-dependent resistor (LDR), which results in change in signal strength due to change in the resistance of the LDR. The heart-rate readings are displayed on three seven-segment displays. The microcontroller chip is the main controller of this circuit. Some of the main components used are: AT89C2051 microcontroller, LM358 operational amplifier, ULN2003 current buffer, LTS542 common-anode,7-segment display, etc. |
650
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7
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Microcontroller Based Ultrasonic Distance Meter(0802)
This project employs 40khz ultrasonic transducers for distance measurement up to 2.5 metres.Ultrasonic transducers measure the amount of time taken for a pulse of sound to travel to a particular surface and return as the reflected echo.This cicuit calculates the distance based on the speed of sound at 25 digree celcius ambient temperature and shows it on a 7-segment display.Some of the main components used in the project are:AT89C2051 microcontroller,two 40khz ultrasonic transducers(one each for transmitter and reciever),current buffer ULN2003,operational amplifier M324,inverter CD4049,four 7-segment displays,five transistors and some discreet components. |
1150
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8
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Cellphone Operated Land Rover (0807)
In this project,the robot is controlled by a mobile phone that makes a call to the mobile phone attached to the robot.In the course of a call,a tone corresponding to the button pressed is heard at the other end of the call.The robot percieves this tone with the help of the phone stacked in the robot.The recieved tone is processed by the microcontroller with the help of MT8870 decoder.The microcontroller is preprogrammed to take a decision for any given input and outputs its decision to motor drivers in order to drive the motors for forward or backward motion or a turn.Some of the main components used are:MT8870 DTMF decoder,ATMEGA 16 AVR microcontroller,L293D motor driver and 74LS04 NOT gate. |
2500
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9
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Microcontroller Based Bi-Directional Visitor Counter (0701)
Here is a low-cost AT89C52 microcontroller-based visitor counter that can be used to count the number of persons at a place. It consists of three 7-segment displays (LTS543 ) to display the number of visitors upto 999. The circuit works off a 5V DC supply. Some of the main components include IR LEDs, L14F1 photo transistors, LM324 quad op-amp and 7805 regulator.
MPR : Rs.900/-
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900
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10
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Microcontroller-Based Code Lock(0608)
This simple code lock project is based on a 20-pin ATMEL microcontroller AT89C2051.It employs a 4-dihit sequential code with time-out security feature.Apart from the microcontroller, the main conponents include CD4050 non-inverting buffer,LCD display and 7805 regulator. |
800
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11
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FM Booster (0209)
Here is a low-cost circuit of an FM booster that can be fed between your FM reciever and the antenna to listen to distant commercil FM stations clearly.The main components of the cicuit comprises of CS2570 transistor,trimmers and inductor coils. |
60
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12
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Automatic Low-Power Emergency Light(0801)
Here is a white-LED based emergency light that turns on automatically when main supply fails and turns off when mains power resumes.It has its own battery charger and stops when fully charged.The main components used are LM317 adjustable regulator,BD140 AND BC548 transistors, trimmers and inductor coils. |
450
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13
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PC-Based Automatic Time Manager(0708)
Here is a project for controlling a school bell or a scheduled shift-timing alarm of a factory automatically.The load connected to the output of the project can be electric bell or a hooter.The timing can be programmed for everyday schedule as per individual requirement.The program is developed using Microsoft Visual Basic and interfaced through PCs parallel port.The main components used are 555 timer, MCT2E opto-coupler and 7806 regulator. |
250
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14
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Secured Room Access System(0710)
This microcontroller-based digital is an access control system that allows only authorised persons to access a restricted area.When someone tries to enter the restricted area by entering invalid passwords continuously,the system locks itself and can be unlocked only by the master user.The system compromises a numeric keypad,a solenoid-operated lock and LCD display.The main electronic components are Atmega 8535 microcontroller,7806 regulator and MCT2E opto-coupler. |
1000
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15
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Microcontroller Based Tachometer(0801)
This is an easy-to-make photoelectric based tachometer project for measuring the RPM(revolution per minute)of rotating shaft,shop-floor tools andmany household machines without any mechanical or electrical interface.The circuit employs AT89C2051 microcontroller as the main controller.Some of the major components used in the circuit are CA3140 operational amplifier,ULN2003 current buffer and KLQ564 4-digit,7-segment display. |
500
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16
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Microcotroller-Based Industrial Timer (0706)
Here is a simple industrial timer based on 40-pin Atmel AT89S52 microcontroller that performs count-down operation up to 9999 minutes/second with four 7-segment displays showing the actual time left.The relay energises as you press the start switch and remains on till the countdown reaches0000.Four push-to-on switches are used to start/stop,select either minutes or seconds,and set the initial value for countdown operation(using up and down keys) |
1400
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17
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Digital Voltmeter(0707)
Digital Voltmeter is designed as a panel meter and can be used in DC power supplies panels or where it is necessary to have an accurate indication of the voltage. |
450
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18
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Remote controlled real time clock with device controller
(0704)
This circuit is based on ATMEGA16 microcontroller and DS1307 real time clock chip. A 16x2 LCD display is used for user interface to display time, date and various settings. A real time clock chip is set to control five different alarm settings. These settings can also be used to switch on/off eight external devices. This project uses a TV remote control with RC5 format. |
1500
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19
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Microcontroller-Water level controller cum motor protector
(0702)
This circuit uses an AT89C51 microcontroller as the main controller. It can be used to switch ON and OFF the motor depending upon the level of the water in the tank. The status is displayed on an LCD module. The circuit also protects the motor from high voltages, fluctuations of mains supply and dry running. |
1350
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20
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Design your own infra red remote
(0703)
Most home electronic gadgets like TV sets, stereo systems, CD/DVD players/recorders, air conditioners, microwave ovens, multimedia computers, set-top boxes etc come with a remote control. Presented here is an infrared remote control based on RC5 format. It employs an SC30310 encoder. The remote is a line-of-sight system with a range of about 5 meters. This circuit can be used in Remotely Programmable RTC-Interfaced Microcontroller for Multiple Device Control and Remote Controlled Real Time Clock with Device Controller projects published in EFY Sept06 and April07, respectively |
150
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21
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Remotely Programmable RTC- Interfaced Microcontroller for Multiple Device (0609)
This project is based on AT89C52 Microcontroller and DS12887 Real-Time-Clock chips. It also includes an 82C55 Programmable Peripheral Interface chip to program the switching operation of 24 electrical appliances. A 16x2 LCD module is used as a user interface to display the time setting such as month, date, hour, minute, device number and on/off status of the device. Philips TV remote control based on RC-5 format is used to program the microcontroller and control the devices. Other main components used in the project include 74LS138, 74LS573, 7400, ULN2803 and TSOP1738. |
2150
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22
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Microcontroller Based Automatic Flush System(0612 )
Here is an automatic flush system(toilet & urinal)that automatically flushes the fixture when the user departs.It employs an AT89C2051 micrcontroller and an infrared sensor to detect a user approaching the fixture,then waits until the user departs.It also flushes before the person departs if the person is present for more than the preset time(5 minutes).CD4050 is used as a buffer for the output ports of the micrcontroller,TSOP1738 is used as an IR sensor and a solenoid is used to actuate the flush from a 6V power supply with a battery back up inside the unit. |
600
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23
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Two-Channel PC-Based Oscilloscope(0612)
Presented here is an oscilloscope that accepts input up to 10 kHz with ±16V from input source and display the output waveform on your PC monitor. PIC18F2550 microcontroller chip from Microchip is used as the main controller. The oscilloscope is compact as there is no need of additional power supply for the entire circuit board. The circuit receives power from the PC through the USB cable. This controller chip along with MCP6S91, LF353 and L7660 ICs are used in the project. The project can be run in a PC with Windows 98SE or higher version operating system.
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1350
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24
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**Remote Controlled Land Rover - A DIY Robotic Project (0606)
The project integrates a number of circuits to achieve the working model of a Land rover vehicle. It can be remotely instructed to perform simple functions through appropriate push-button switch on the remote control like : move forward, backward, right and left directions. Provision is also made for its automatic stop on encountering a physical obstruction while moving in forward and reverse directions. It has the features to select either infrared (IR) or radio frequency (RF) mode of operation. Use of discrete logic ICs allows a complete understanding of the operational logic of Rover’s working principles, using their truth tables.
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3000
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25
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Microcontroller Based School Timer(0107)
This versatile programmable school timer can be used to display real time clock as well as school bell timings on four 7-segment LED displays.It can store about 20 bell timings and activates the bell through a relay at every predetermined period.The main components of this circuit include MC68HC705J1A microcontroller,CD 4532 priority encoder,74LS138 decoder and 74LS47 display driver. |
1000
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26
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AT89C2051 Based Count Down Timer(0603)
Here is a microcontroller based timer that performs countdown operation for upto 99 minutes with two 7-segment displays showing the actual time left. AT89C2051 chip is used in this circuit. The program can be easily modified according to users requirement. CD4511 and LTS543 are some of the ther main components used in this project. |
600
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27
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Multi Melody Generator with Instrumental Effect (0606)
This versatile melody generator is capable of generating various English and Hindi version melodies using UM3481A and WR630173 tone generator respectively. Instrumental effects can also be produced with the same circuit.The advantage of this circuit lies in its ability to select various modes of melodies through DIP switches, instrumental effetc,high volume and volume control provided in the circuit. |
160
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28
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Hearing Aid (0608)
This low-cost, electronic hearing aid employs a TDA 2822M(8 PIN-DIP package)audio amplifier IC.Transitor BC547 and associated components form the condensor microphone signal preamplifier.The audio power output of this unit is 10 to 15 MW. |
150
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29
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Remote Control Digital Audio Processor (0502)with remote in NEC format
This infrared (IR)remote controlled digital audio processor has four stereo input channels and one stereo output.The processors in this system control various functions of each channel and output them to your audio amplifier. |
1500
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30
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3D Surround Sound System(0605)
This is a novel project for hobbyist interested in 2-channel surround sound systems.An NJM2702D 3D surround audio processor is used here,which generates 3-dimension surround sound effect using two loud speakers only. |
550
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31
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School /College Quiz Buzzer(0605)
This audio-visualquiz buzzer circuit given here can be used for up to eight players.It uese IC 74LS373 and a few passive components. |
500
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32
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Speed Checker For HighWays(0512)
With the two lasers installed at 100m apart on one side and corresponding LDRs on the other side of the highway,when the vehicle crosses the two laser beams,this circuit can check the speed of a vehicle through the readings on a 7-segment display unit. It also activates an audio alarm (piezo-buzzer)when the vehicle exceeds the permissible limit. |
550
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33
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*Versatile Power Supply(0602)
It is a DC regulated variable power supply that can deliver 3.3V up to 15V ,1Amp output using an adjustable regulator IC LM317. |
250
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34
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Sensitive Vibration Detector(0511)
The Vibration detector (piezo element) in this circuit can be used to detect the vibration of the rolling shutter guard and alarm you when unauthorised person tries to open it. The load in the circuit can be an AC operated electric bell or bulb used as alarm device. The alarm can be stopped using a push-to-off switch given in the circuit. |
150
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35
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Heat Sensitive Switch (0511)
This circuit can be used to switch on or off the load at a predetermined temperature. The temperature is set through the output of a temperature sensor IC or heat sensor and a voltage divider network. When the temperature reaches the preset value, the circuit energizes the relay and automatically turns on the load such as fan through the contacts of the relay. |
400
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36
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Digital Dice (0510)
The digital electronic dice circuit acts like a normal dice and uses four different logic gate combination to bring out the six faces of the dice. Seven LEDs are suitably positioned on the board. When you place your finger on the touch plate, the LEDs will glow. The number of glowing LEDs corresponds to the number of the number of spots on the dice. |
100
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37
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Smart Cellphone Holder(0507)
This smart cellphone holder makes sure that you do not forget to carry your mobile phone. If you have forgotten to carry your cellphone, the LED light fitted in the cell phone holder will stop flashing to indicate that the mobile phone is not in the holder. |
200
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38
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Low Cost Energy Meter(0505)
As the name suggests "Low cost energy meter" has been constructed with the help of IC ADE 7757. The output units are displayed in the seven segment display. This can count upto 9,99,999. The circuit is also provided with proper battery back-up such that even if the power fails the display will not be reset & it goes on. Electro-mechanical electricity meters, which have some inherent shortcomings, are being replaced by DSP(digital signal processing)based chips employing very few external components. This meter can be configured for automatic meter reading (AMR),remotely.
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1000
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39
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Remote Control for Home Appliances (0504)
This handy circuit can be used to switch on and off any of your home appliances or any electrical device with a single press of your TV, VCD or DVD remote control. This low-cost circuit is based on 4017 counter IC which receives trigger pulse from IR sensor and switches on the relay through which electrical devices are switched on & on receiving the 2nd pulse the device is switched off. |
200
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40
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Digital Security System(0503)
This circuit can help you from the intruders and strangers. Very thin copper wire loops has to be wired around your house and if any of the copper wire loops is broken, the display displays the particular number of the loop with buzzer sound. if more than one loops are broken it will display the sum of their loops. Number of IC used :- 2 |
200
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41
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PC Based Timer (0502)
This circuit interfaced with PC computer through D-25 pin male connector, can switch on and switch off the device for a particular timing required by the user. The program is written in C languages & compiled in Turbo C compiler. The maximum timing of the circuit is for 18 hours.Number of ICs used :- 1. |
170
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42
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Manual EPROM Programmer (0503)
This circuit can manually programs your EPROM (2716,2732) with the help of 8 way dip switches. Two 8 way dip switches are provided one for the address of the program and the other for the date of the program . This circuit is quite inexpensive and very useful to program your EPROM by yourself. Number of IC used:- 2 Nos. |
550
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43
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Long Range Burglar Alarm using laser torch
(0501)
This Circuit operates at a frequency of 5 khz. If the transmitter & receiver parts are properly aligned it can work upto a distance of even 30 meters When the objects cuts the transmitter and the receiver parts. No. of IC used:- 1 |
280
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44
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Infrared Object Counter(0501)
This circuit can be installed in public places to count the number of people or objects passing through the transmitter & receiver. The circuit operate at a frequency of 38 Khz . The count will be displayed through the calculators. Number of IC used:- 3. |
250
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45
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Quality FM Transmitter (0508)
The digital like sound quality that FM offers is the reason that many people prefer to have their own transmitting station in FM band. This quality FM transmitter can transmit chosen music in FM band. To receive its signals, any conventional FM radio receivers can be used. Without complicating the functionality, this circuit transmits the signals just by using discrete components. It provides an easy way to transmit less distorted, low noise music with in a range of about 200 meters. Number of ICs used: None.
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180
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46
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Voice Recording and playback (0409)
This circuit enables to record a single message of upto 60 seconds duration or upto eight different messages of 7.5 sec duartion each. In playback mode the circuit plays recorded message either randomally or in sequential manner. It uses Voice Processor IC as main unit. Number of ICs used :- 2. |
500
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47
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Temperature indicator using 89C52 (0407)
It is microcontroller based temperature temperature indicator that displays the temperature in the range of -55 degree celcius to 125 degree celcius. The Indicator output the calibrated date in digital form . It uses a temperature sensor Chip. Total No. of IC used - 3. |
1250
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48
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Stepper motor control using micro-controller(0410)
This circuit is based on 89C51 microcontroller.It provides to control the rotation of a DC stepper motor in clockwise as well as anticlockwise direction. This module is simple and easy to construct and can be used in many application e.g. Machine control , Robotics. |
1200
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49
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Power failure resumption alarm (0509)
This circuit sounds an alarm whenever AC mains fails or resumes. It can be easily installed where you want to monitor the status of the mains supply. Number of IC used:- 3. |
150
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50
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Hit Switch (0412)
This versatile hit based switch is electronic equivalent of a switch. This circuit serves as an on/ off control for incorporation in a wide variety of electronic design.The circuit uses a Piezo electric diaphgram. Total No. of IC used - 1
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75
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