How to remove Time line from facebook

Here is the time line remover for facebook


How to disable or remove Facebook timeline ?

If you don’t like the new Timeline feature on Facebook and want to view profiles in the old style,
then TimelineRemove is the perfect extension for you. This tiny, but handy tool disables
the new Facebook timeline feature and restores the classic look,
without changing the timeline behavior for other visitors of your Facebook profile.
The extension basically works by hiding the timeline, so you can view your own and others’ profiles
in the old style.
TimelineRemove works automatically once installed, and a button is added to the toolbar that lets
you toggle the timeline on and off, whenever you want.

1) Step :

2) Step :

3) Step :

4) Step (refresh pages on facebook) :



An Enlightening Inspiration

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An Enlightening Inspiration…….Jyothi Reddy….

“Every successful story has a painful beginning
and every painful beginning has a successful ending”

Do you think it is just a common statement. It is not a mere statement. A philosophy of life. It is not even a mere philosophy of life, It is an alarming, compassionate, soothing and profound answer to all the questions that always chant in your mind. A right and correct response to the pains that you experience in the early phases of life. It is said No pains ,No gains. Multimillionere Bill gates has rightly said ' If you are born poor, it is not your mistake but if you die poor it is your mistake.’

Let me elucidate , narrate and bring into lime light of an eye opening , mesmerizing and inspiring life story of a lady who was just an agricultural labour, worked for Rs. 5 per day until 1989 now became CEO of Keys software solutions in USA and making millions of money and serving the grass roots of Indian society. Is it awe striking and jaw dropping for you ? but you need to believe and accept because you are all going to witness her, listen to her and even talk to her very soon. She is none other than Mrs. D. Anil Jyothi Reddy.

I know You become more enthusiastic and eager to know how a mediocre village woman could surpass all the obstacles of domestic as well as financial and made her dreams realized. Her success is not limited to her or her own family, the social service that she renders to the needy folk of society inspires many corporate giants to extend their hand with her to help the needy. The financial support that she renders is not a big issue when it is compared to her life story which has become a living example for millions to take her as inspiration and face the challenges with brave heart. Now many women take haer as an example and coming out with courageous hearts to brake the limiting believes as well as glass ceiling which condense their actual growth according to their innate potential.
Now here are some of the important phases in her much instigating story of her life. I know many of you even feel the warmth in your heart and wet your eyes and burst into tears by becoming panic. No.. If you intend to become is not liked by either Jyothi Reddy or us ..What we expect you to recharge your selves , pump the inspired blood to each and every artery , energize each and every cell, strengthen your muscles, expand your perception break your limiting beliefs, burst your comfort zone, stop blaming the environment and re-define your goal and aim at the sky and gigantic your image…….yes, yes…..we are sure that you will .. you will…. Make it possible.

D. Anila Jyothi Reddy was born in Narasimhula Gudem in Hanumakonda mandal, Warangal District as eldest of four children to a common peasant who has lost his employment during emergency. His father was joined in Army but could not continue because of his attachment with the family. The military training that he had, the attitude that he developed, was given to her as inheritance. As it was very difficult for the family to meet the both the ends, he was forced to join Jyothi Reddy BALASADAN, a government orphanage at Hanumakonda as amother less child.
From 5th class to 10th class Jyothi Reddy stayed in orphanage by having solitary life away from home. She used to await if anyone would come and render some help. Particularly during winter season when she used to shiver like anything as her blankets were torn. May be this had a strong influence in her sub conscious and drive her to orphanages often and help the children with all that they require among all the love and feeling of belongingness. Even during summer she never used to go to her village, she used to stay in warden’s house and did all the house hold work for which she was fed.
The empathy that she shows on all the orphans is gained through her own bitter experiences. Recently she made a representation to the Government of India with all her allies to legislate the Rights of the Orphans. She strongly believes the words of Mother Teresa… “ The worst disease in the world is neither poverty nor other, lack of feeling of belongingness, being unwanted is the worst ”. Whenever she visits the Orphanages in India she prefers to spend more time with the orphans. Even they rejoice her company… “ she is more than mother to me’’ says Ranjitha, an orphan who is being sponsored by Jyothi. If you see many college students keep on blaming their environment and parents when they fail to satisfy their wants. A sincere advice to them to visit any orphanage at least once in a year. You better understand the real pain of the life and appreciate what you really have.

MARRIAGE: Mrs Jyothi Reddy passed 10th class with good marks and she dreamed to continue her education. But her parents have contrary plans. At the age of just 16 they performed her marriage with Mr. SangiReddy because of their dire financial position. It is quiet common in rural India, many parents of girl child treat them as burden and try to remove the burden as soon as possible and perform marriage at an early stage. She was innocent and not knowing much about marital life.. time passed the age of eighteen she became mother of two girls. It was very difficult for her to provide the basic needs of her children to feed them and to look after.

Strong determination to take care of her children made her to persuade her mother-in-law and husband to work in the agriculture to work for money. She worked for Rs. 5 per day as agriculture labour. Many other people who worked along with her on field were impressed by her attitude taught her the basics of hard work of peasants. She worked from 1986 to 89 on field till she got an interesting turn in 1989. Nehru Yuvak Kendra (NYK) started a night school in the village to teach the basic education for adults. As there was no graduate from the village and Jyothi was the only available option, they appointed her as the volunteer to educate the adults after giving some training. It fetched her Rupees 150 per month. She gathered all the co workers in the evenings to the Centre and taught them the basic education with unique play way methods. The Inspection authorities were very much impressed by the initiative and dedication of Jyothi as the volunteer and appointed her Mandal Prerak of Hanumakonda.

After being appointed as Mandal Prerak Jyothi had to visit all the centres of the Warangal district and realized the importance of education and without higher education she can not grow to next levels in life. She completed her graduation and post graduation Distance Mode from Ambedkar Open University. Even University authorities were impressed by her urge for education. She did B. Ed from Anna University and become a
government teacher. But it was not a cake walk for her. She had to cross over all obstacles at home as well as in society. Leaving her village and staying at her work place with her children and husband and balancing family and work and making money by doing all alternative sources as the salary was not sufficient etc,, these were all the different problems higher than the Everests for any rural Indian women. Patience, perseverance and commitment are the secrets of her energy behind this passionate effort.

If the story stopped here there would be nothing much to inspire others. When Jyothi was working as inspector of schools, a relative of her who settled in America came to her place. Jyothi accompanied her during her stay and observed how much change had been taken in the life style of her America settled relative. The way her American relative was spending money for her daughters laid seeds of desires in her. She thought even she could give great future to her daughter if she would go to America and earn there. That time onwards she made up her mind and learnt computers and started saving money for her passport and visa. After series of early failures she could get a visiting visa and flew to America with a little amount but heart filled dreams.

EARLY TRAILS IN AMERICA: As soon as she landed in America she realized it was not an easy task to settle in America. The people whom she believed would give her shelter and support turned off their faces. As money she brought from India was running off she joined as a salesperson in “ Movie Time ’’ a video shop in New Jersey. She stayed as paying guest in gujarathi family. While she was working iin Video Time a known Indian from Warangal saw her and recommended her name to his brother who owned a company called “ CSAMERICA” and she was appointed as recruiter after being trained. Later a well know company ICSA offered her a good job with handsome salary. Again she faced some problems as her visa was not approved and she went for H1 visa. She had to resign her job in ICSA and again had to work for $5 per hour in nominal jobs till she got her H1 visa.

ENTREPRENEURSHIP: She went to Mexico for her VISA stamping. All the hardships of obtaining visa gave her an idea of establish her first entrepreneurship to assist the people to get their Visas. Thus Keys software solutions was initiated. It extended it services like developing software solutions and recruitment and other job providing areas. Jyothi came to America in May 2OOO and by September, 2001 she became entrepreneur. She made her cousin as partner as his partner and extended her business to become more profitable.

Her hard work, commitment and dedication fetched her the success she dreamed for. She made enough money to take care of her children and her near relatives. Her two daughters could finish higher education in America from prestigious universities and got married to well settled bridegrooms. Her dream to provide good living conditions to her daughters was fulfilled. But she thought it was not here mere responsibility. She has been always thankful to all the people who supported her. She never forgets the pains that she had throughout her life. So she decided to start helping all the needy. She wants to shed tears from the needy orphans who suffer from all inadequacies. She wants to give warmth heart to the pain tinted lives. These thoughts ushered her to take an inspiring turn to extend her service to the humanity.

It is not just a lady went to America and making some money.. and people started calling it as success. It is the attitude and humbleness of Jyothi Reddy which really made the people to notice her and started extending their service to fellow human kind. Jyothi Reddy never forgot her roots. In every visit to India she visits Orphanages, Old age homes and spends time with them, provides them financial assistance. She visits Women’s colleges and empowers them with her life experience. She stands for the orphans and represented to the government to make a legislation to safeguard their rights. She takes her success to heart and not to head. She helped many Indians to settle in America by providing initial shelter and guidance.

Jyothi Reddy has a vivid and constructive vision to extend her service to needy people. She wants to provide educational facilities and long term result oriented service activities. Everyone should accept the self responsibility and try to be courageous enough to face the challenges. Struggle in life strengthens the caliber of the people. She visits colleges and inspire girl students to take up the self responsibility to empower themselves. She strongly feels that every individual should stop blaming the environment and start helping themselves. God always sends his hidden helping hand through different unexpected sources. We need not to look back when we realize we are responsible for our lives. This is the message that she wants to share with everyone she meets.

Post Your Resume Here @ JNTUK Placement Page

Hi Friends...
If You are still looking for Job Pls Post your Resume HERE .......
This redirects you to JNTU Kakinada page....
Sample resumes also available here ......
You cal also search the previous like in naukari and monster......

Technical Support @ Saranathan College Of Engineering, Thiruchirappalli (Tamilnadu)

(Freshers) Walk-In : 2010 / 2011 Passouts : Technical Support @ Saranathan College Of Engineering, Thiruchirappalli (Tamilnadu)

Job Position : Technical Support Associate (100% Voice Programmers)

Job Shift : Yes (Should be Flexible)

Walk-In Location : Thiruchirappalli, Tamilnadu

Job Location(s) : Hyderabad / Bangalore

Compensation : Will be disclosed to the selected candidates by the Manager

Date of Joining : Immediate

Desired Qualification : 
• Any Graduate (10+2+3), Any Post Graduates, Diploma Holders (10+3)
• Year of passing: 2010 / 2011 Batch Students
• Percentage: No Restriction on percentage

Desired Experience : 0 Years
Requirement Details :
• Remote Infrastructure Management - Technical Support Associate (100% voice programmers)
• Provide Technical solutions to the external customers
• Awareness of basic networking concepts and technologies.
• Proficient in network connectivity troubleshooting, TCP/IP, Dial-up, Token Ring, Ethernet, LAN/WAN
• Understanding of operating systems, Windows 2000/NT/XP, configuration options and Troubleshooting
• Browser Support - Internet Explorer
• Ability to identify basic hardware parts and aware of basic hardware concepts
• User level familiarity with at least one e-mail client - Outlook, Notes etc.
• Skilled in commercially standard software applications and major desktop operating systems.
General Skills & Criteria :
• Must have good communication skills
• Must have knowledge on Computer Hardware and Networking concepts
• Must be willing to work in Shifts

Selection Process :
• Group Discussion
• Technical Interviews
• V& A Test
Mandatory documents to be carried for the interview :
• Updated Resume Copy (Candidate Profile)
• All the mark sheets, Provisional Degree Certificates/ Degree Certificates (without fail)
• Photo ID Card (Driving License / Passport / Voter ID card / College ID proof )
• Marks Sheets
- Highest Degree (for all the semesters)
- XIIth
- Xth
• Degree Certificate/s
• Passport Size Photo
• If you are employed in any of the company, please bring
- Present organization offer letter
- Last 3 months pay slip / hike letter

Note: This role is NOT into BPO domain.

Walk-In Date : On 21st & 22nd April 2012


How to Apply for this Job ?

ECE projects: Remote control for home appliances (Electronic projects)

Title: Remote control for home appliances (Electronic projects)
Departments: ECE projects, EEE projects, electronics engineering.
Can be used for: Hobby projects, Mini projects for engineering students.

This project was found while surfing the web. It was just brought into our knowledge by one our team member and found to be a valuable suggestion. This basic electronic project is purely application based project. This can be constructed to improved the normal everyday living experience of a normal person. This project is about a circuit that is to be attached to any home appliance in order to control it's working. The circuit given below can be easily constructed with the guidance given and this circuit must be attached to any home appliance. The total controlling can be done via our TV, VCD or DVD remote controller. The circuit will function from a 10 meter distance. This circuit was designed by S.Mohan. Tested and published by EFY.

Sample from the Project and circuit details: The amplified signal is fed to clock pin 14 of decade counter IC CD4017 (IC1). Pin 8 of IC1 is grounded, pin 16 is connected to Vcc and pin 3 is connected to LED1 (red), which glows to indicate that the appliance is ‘off.’

The output of IC1 is taken from its pin 2. LED2 (green) connected to pin 2  is used to indicate the ‘on’ state of the appliance. Transistor T2 (BC548) connected to pin 2 of IC1 drives relay RL1. Diode 1N4007 (D1) acts as a freewheeling diode. The appliance to be controlled is connected between the pole of the relay and neutral terminal of mains. It gets connected to live terminal of AC mains via normally opened (N/O) contact when the relay energizes.


Here i will share your an another methods of password recovery (i.e it is for BOTH NOKIA S40 AND NOKIA s60 users).

here we start memory card password recovery tutorials


     NEMESIS  is an software which is used to hack nokia phones for flashing, security unlocking etc. by using this software you can recover back your memory card password here follow these steps.....

1.Download NEMESIS SERVICE SUITE from here and install it in your pc.
2.After installing open it(open it by right clicking>click run as adminstraror).
3.Now connect your nokia phone with pc through data cable.
4.once it will detect your phone, click on "phone info" as given in screen shot(check above screenshot).

5.In "phone info" option left side contains various buttons we have to click on "scan" button this button will scan data of your phone and also memory card info(check above screenshot).

6.After 100% scanning the info. of your phone will be displayed by NEMESIS under phone info section(check above screenshot).

7.Now select phone IMEI and click on permanent memory button given at left hand side(check above screenshot).

8. In permanent memory you have to click read option given above(check above screenshot).

9.And then reading of phone memory is started it will scan whole data stored in nokia phone(check above screenshot).

10.After 100% scanning you will see a url or path.This path contains our memory card key(check above screenshot).

11. Then go to c:\Program Files\NSS\Backup\pm. Their is a file having a numeric name with exetion .pm(check above screenshot).

12.NOW create a notepad file by right clicking(check above screenshot).

13.And drag this .pm extention file to notepad(check above screenshot).

14.You will see number of alpha numeric codes such as 0000,a00dfgf00 etc(check above screenshot).

15. And your memory card password is looks like above selected code(check above screenshot).

16.Now remove alternative 3 and 0000000 from above given code(check above screenshot).

17.You will get your password after deleting alternate 0 and 3(check above screenshot). 

Remote Controlled 6-Camera CCTV Switcher

Closed-circuit television (CCTV) uses video cameras to transmit signals to specific monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point wireless links. CCTV is often used for surveillance in areas that need security,such as banks, casinos, shops, departmental stores and airports or military installations. 
Here is a remote-controlled CCTV switcher circuit to monitor six cameras on a single or dual monitor/TV. 
The salient features of this switcher are: 
  • Cameras: Six cameras with one way audio (audio incoming only).
  •  Operation: Fully remote controlled (infrared commander).
  • Front display: LCD to display the camera selected and all other functions/parameters.
  • Camera selection: Manual (you can select any camera of your choice by pressing number keys or camera up/down keys on the remote) and auto (the switcher selects the cameras one by one and holds videos of each camera till the preprogrammed time). 
  • Auto mode: You can change ‘on’ time of each camera (hold time) individually through the remote. Time can be programmed from 0 to 255 seconds. 
  • Camera bypass: You can set any camera in bypass mode by entering 0-second ‘on’ time for cameras which you want to bypass or don’t want to watch during auto mode. 
  • Audio: One-way audio. In this model, you can hear the audio from the camera selected by the switcher. 
  •  Video: Two video out RCA sockets with 75-ohm impedance 1Vp-p are available at the rear panel of the master unit. You can connect two monitors in these sockets. 
  •  Other features: Wide input voltage range, long-range infrared remote commander, microcontroller-based design supported with CMOS digital integrated circuits, liquid-crystal display to monitor the status and bilateral digital MOS switches for switching the analogue video/audio signals from cameras.
At the heart of the circuit is Micro- chip’s PIC16F72 microcontroller, which controls all the functions described in the design. Its pin configuration is shown in Fig. 1.
The circuit:
Fig. 2 shows the main control circuit of the camera switcher. In this circuit, PIC16F72 microcontroller controls all the functions such as interfacing/ initializing the LCD to display all the desired characters on the screen decoding the RC-5 command on pressing the required keys of the remote control and providing high logic to enable corresponding bilateral CMOS analogue switches to connect the video signal from cameras to the video-out- put socket and audio signals to the power amplifier of the corresponding camera selected from the remote. Here we have used the remote control of an LG TV (remote code No. 6710V00079B). It is readily available in the market.

A remote sensor is connected to port RB0 (pin 21), called interrupt port, of the controller and the software initializes interrupt routines along with timer-0 interrupt to decode the RC-5 command.  

Any transmission from the remote consists of two start bits, one toggle bit, 5-bit address and 6-bit command. Here we have not used the 5-bit address. A biphase-modulated bit can be thought of as two separate bits that are always the inverse of each other. A logical zero is represented by a ‘10’ pattern on the IR input, while a logical one is represented by a ‘01’ pattern. That is basically used to decode the received message.

Toggle bit is a particular property of the RC-5 protocol. This bit changes polarity every time you press a key and will remain unchanged as long as you hold the key. That enables the receiver to detect released keys, which helps to eliminate key bounces. We have also used this bit to detect so that if any key is kept pressed for a long time, the routine detects the command once, keeps the value in a general-purpose register called ‘pass- dummy’ (refer to ‘.asm’ file), and does not process and store any further command till the remote key is released. The stored RC-5 command value in register ‘pass dummy’ is used to perform the necessary function given in the source code.

The LCD shows the camera number selected from the remote and mode of operation (auto/manual). For camera-hold time set for auto mode and other display text information, please see the LCD screenshot in Fig. 3. Use of the LCD makes the project more user-friendly. 
LCD Screenshort

All the cameras are to be connected to SK1 through SK6 (5-pin DIN connector) as shown in the circuit diagram. The extreme right and left pins are for 12V positive and negative supply (to be fed from the regulated power supply of the main switcher)for the built-in camera module. The 12V power supply is permanently connected to all the cameras. Audio and video signals from the cameras are selected using switch pairs S2a- S2b through S7a-S7b (built inside IC2 through IC4) and fed to the audio power amplifier and video output sockets, respectively. 

Each IC has four CMOS bilateral switches for transmission or multiplexing of analogue or digital signals. It is pin-to-pin compatible with IC CD4016, but has much lower ‘on’ resistance, which is relatively constant over the input signal range. 

Video and audio signals from SK1 (camera 1) are connected to S2a and S2b, respectively, and both the enable pins (to switch on both the switches) are shorted out and connected to port RC7 (pin 18) of the microcontroller. Similarly, audio and video signals from SK2 through SK6 are connected to IC2 through IC4 and then to Port C of IC1 as shown in Table I.
Table I
Enable pins of switch pairs S2a-S2b, S3a-S3b, S4a-S4b, S5a-S5b, S6a-S6b and S7a-S7b of IC2 through IC4 are shorted to each other and fed to the corresponding port of Port C as shown in Table I. The microcontroller provides high logic at Port-C pins to switch on a particular camera. The truth table for Port C is shown in Table II. 
Table II
Immediately after switching on the mains, the standby LED (LED7) connected to Port-C pin RC3 glows and the LCD shows the welcome page (refer to the LCD screenshot). 

On pressing the power key on the remote, the standby LED turns off and the LCD shows which camera is ‘on,’ in which mode it is now and default hold time for the corresponding cam- era in ‘Auto’ mode. 

As described above, pins of Port C (RC0, RC1, RC4-RC7) are connected to IC2 through IC4 for selecting the cam- era to be switched on. LED1 through LED6 are used to check the logic status of Port C. Pressing keys ‘1’ through ‘6’ on the remote makes the corresponding LEDs (LED1 through LED6) glow, indicating ‘on’ condition of the cam- eras (CAM-1 through CAM-6).

Here a 16-character, 2-line LCD is used in 4-bit mode. Data lines D4 through D7 of the LCD are connected to Port-B pins RB4 through RB7. En- able (EN) and reset (RS) pins are con- nected to RB2 and RB3 pins, respectively, and the read/write (R/W) pin is connected to ground as we have used the LCD in writing mode only. Preset VR1 (10-kilo-ohm) is used for setting the LCD character contrast.

Power Supply:
A simple circuit for regulated supply (shown in Fig. 4) is used here. The +12V regulated output is used to power all the six cameras, IC2 through IC4 and IC5 and fed to another 7805 voltage regulator (IC7) to get the regulated +5V output for the microcontroller (IC1) and the LCD.
Fig.4. Power Supply
The current rating of the trans- former should be around 2A, depending on the current consumption of the cameras. Use a good-quality heat-sink for both the regulators. 

Power Amplifier:
A simple power amplifier (see Fig. 5) is used to amplify the sound signal from the cameras and hear it on a small speaker.
Fig.5. Power Amplifier
The audio power amplifier is built around IC UTC820 (IC5). UTC820 is a monolithic integrated circuit audio amplifier delivering an output of 1.2 watts at 9V on an 8-ohm speaker load with 10 per cent total harmonic distortion (THD) and good ripple rejection. It is designed for audio-frequency class-B amplifier with a wide operating supply voltage range of 3V to 14V and minimum external components.
Fig.6. UTC820
The pin configuration of IC UTC820 is shown in Fig. 6. Components at pin 2 of the IC5 decide closed-loop voltage gain (dB) of the amplifier. Here a 47-ohm resistor (R11) and a 22µF capacitor (C12) are used and, with these values, about 45dB closed-loop voltage gain is achieved. You can reduce the component values for more gain but it’s not required here as maximum gain of 75 dB is possible. Capacitor C10 (100µF) connected between pins 5 and 7 of IC5 is used for bootstrap and improving the low-frequency signal. The amplifier output at pin 5 is connected to the speaker via C13. The audio signal from the cameras is fed to input pin 3 of the IC via volume control VR2 (10-kilo-ohm), capacitor C17 and resistor R13. Here the output power is limited to about 500 mW at 8-ohm load approximately, so use of a good-quality 6.4cm speaker is recommended.

Function of remote control key:
The functions of various remote keys are shown in Fig. 7.
Fig.7. Tv Remote Control
  • Power on/off key. Press it once to switch on the switcher and press again to turn off or keep the switcher in standby mode and vice versa. (AC mains should be ‘on’ in both the cases.)
  • Camera selection key. Select any of the six cameras manually by press- ing any of the numerical keys ‘1’ through ‘6’ once. For example, to select camera-3 press ‘3’ on the remote, and to select camera-5 press ‘5’ on the remote.
  • Auto/manual. By default, the mi- crocontroller sets the mode of selection to manual. (In that case, you have to select the cameras by pressing the number keys or the camera up/down keys.) To change to automatic selec- tion (auto) mode, press ‘Mute’ key and the switcher selects the cameras one by one automatically. Pressing this key again will return the mode of selection to manual, and vice versa. 
  • Camera up key (PR∆ key).By pressing the camera-up key, the switcher selects the next camera. For example, if the LCD is showing camera-2, pressing this key once makes the switcher jump to camera-3. Each successive pressing of this key will make the switcher jump to the next camera.
  •  Camera down key (PR∇ key).By pressing the camera-down key, the switcher selects the preceding camera. For example, if the LCD is showing camera-4, pressing this key once makes the switcher jump back to camera-3. On each successive pressing of this key, the switcher jumps back to the previous camera. 
  • Time set up/down key (Vol+/ Vol– key). In auto mode, the switcher selects the cameras one by one and the picture of the selected camera is held up for a certain time. By default, the microcontroller sets this hold time as 5 seconds. You can change this time for each camera individually from 0 to 255 seconds.
To change this time, press the edit key (TV/AV) once. The switcher goes to the edit mode. Select the camera (for which you want to change the time) by pressing the camera up/down key. On each successive pressing of the time set up key, the time increments up to 255 seconds maximum. 

On each successive pressing of the time set-down key, the time decre- ments up to zero. If you set 0-second time for any camera, the switcher by- passes this camera during selection in auto mode. For example, if you set the time as 0-second for camera-3, in auto mode, the switcher selects camera-1, camera-2, camera-4, camera-5 and camera-6. Here the switcher bypasses camera-3. This function is useful if you want to skip certain cameras. 
  • Edit key (TV/AV). To change the camera hold-up time for ‘auto mode,’ enter ‘edit’ mode first by pressing this key once and then set the desired time by pressing the time up/down key as described above. To exit edit mode af- ter setting the time, press the same key on the remote once again. The control- ler goes back to manual mode.
Testing and Troubleshooting:
After assembling the circuit without microcontroller, apply the power using ‘on’/’off’ switch S1. Check the DC voltage at pin 3 of regulator IC7. It should be +5V. Check the same voltage at pins 1 and 20 of the base of IC1. 

Now, switch off the power, insert the microcontroller in its base and recheck all the connections from the PCB to the LCD and IR sensor TSOP1738. On applying the power, page-1 and page-2 text should display on the LCD screen. Using the remote, switch on the switcher and change the functional sta- tus on the LCD by referring to CCTV switcher remote commander (shown in Fig. 7) and LCD screenshots (shown in Fig. 3). 

Adjust VR1 for maximum contrast on the LCD. If you don’t get any output on the LCD, troubleshoot as follows: 
  • No output on the LCD.Switch off the power and check continuity between the LCD and various pins of IC1 and regulator IC as shown in the schematic diagram. If the connections are Ok, switch on the power, vary VR1 and check the voltage at pin 3 of the LCD (0V to 5V).
  • No backlight on the LCD.Check the voltage at pin 15 (+5V) and pin 16 (0V) of the LCD. 
  • Page 1/page 2 is shown on the screen but the remote commander doesn’t work (nothing happens on pressing functional keys of the remote).
Check the supply at pin 2 of the IR sensor. It should be +5V. If +5V is available at pin 2, check the voltage at pin 3 of the IR sensor. If there is no voltage at pin 3, replace the IR sensor or check the PCB, etc for shorting. 

Once the LCD shows page-1 and page-2 text properly and the remote commander is working, switch off the power and then switch it on again using S1. Now the LCD should show page-1 and page-2 as shown in Fig. 3. At the same time, pin 14 of the MCU should go high (+5V) and the power standby LED should glow. Now press ‘Power’ key on the remote. Pin 14 of the MCU should go low and the standby LED should turn off, and vice versa, on pressing the same key again. If this doesn’t happen, replace the microcontroller. 

Connect LED1 through LED6 to connector CON1. Press ‘Power’ key on the remote to switch on the switcher. Page-3 text should appear on the LCD, showing camera-1 is ‘on,’ the switcher is in manual mode and the default time of camera hold for auto mode. At the same time, Port-C pin RC7 should go high and LED1 should glow. Select other cameras either by pressing keys 1 through 6 or camera up/down keys of the remote and check whether the corresponding LEDs (LED1 through LED6) are glowing (refer to Port-C truth table). Simultaneously, page-3 should show the corresponding camera number accordingly. If the LEDs don’t glow according to the truth table, replace the microcontroller. 

When camera-1 is selected, the LCD should show camera-1 and LED1 should glow. If the monitor does not show the video of camera-1, or you hear no audio from the power amplifier, check 5V logic at pins 5 and 6 of IC4. If there is no voltage at these pins, check the availability of 0.6V at the base of transistor T5, +5V at its emitter and +12V at its collector. Follow the same procedure for all other cameras and their corresponding switching circuits.

 The source program is written in Assembly language and compiled using MPASM tool suite.
DownloadCode files

Fig.2. Switcher Circuit for CCTV Cameras

Component Required:
IC1,                                              PIC16F72 microcontroller
IC2-IC4 ,                                     CD4046
IC5,                                              UTC820
IC7,                                              7805
IC6,                                              78S12
D1-D4,                                         1N4007 diode
T1-T6,                                          BC547
R1,                                                10 K ohm
R2,R13                                         2.2-kilo-ohm
R3-R8,                                         470 ohm
R9,R10,                                        75 ohm
R15,                                              47 ohm, 1watt
R11,R16,                                       47 ohm
R12,                                               1 ohm
R14,R17-R22,                               1K ohm
VR1                                               10-kilo-ohm potmeter
VR2,                                              10-kilo-ohm pot long shaft
C1,                                                 1000μF, 35V electrolyte
C2,                                                 220uF, 40V electrolyte
C3,C10,C13,C16,                          100uF, 25V electrolyte
C4-C6,C8,C14,                             33pF ceramic
C18,                                               0.1μF,Mylar
C7,C9,                                            47μF, 16V electrolyte
C11,                                                680pF Ceramic
C12,                                               22uF, 25V electrolyte
C15,                                               220uF, 25V electrolyte
C17,                                               10uF, 25V electrolyte              
X1,                                                 230V AC primary to 15V, 2A secondary transformer
Xtal,                                              4 crystal oscillator
S1,                                                  DPDT switch
SK1-SK6,                                      5 pin DIN socket
SK7,SK8,                                      RCA socket
LCD,                                              16x2 lcd
CON1,                                            7 pin bergstrip connector
CON2-CON7,                                2 pin SIP connector
CON8,                                            12 pin bergstrip connector
LS,                                                  8 ohm, 6.4cm speaker
Remote,                                         6710V00079B (LG TV)
LED1-LED6,                                  LED 5mm red
LED7,                                             LED 5mm green 
IRx,                                                 TSOP1738 Ir receiver