Electronic house
Tuesday, November 4th, 2008Adjustable timer unit
There is a variety of outdoor light controllers available. Some switch lights ON at the fall of dusk and OFF at the break of dawn. Others switch lights ON at the end of dusk and OFF after few hours. But for domestic use, where we require light in the early morning also, these do not serve the purpose. The circuit described here solves this problem.
It offers the following features:
- It switches ON lights at about 6.00 PM and switches OFF at about 11.00 PM. Again it switches ON lights at about 4.30 AM and switches OFF about 6.00 AM. We can change this time by changing simple components.
- There are separate ON and OFF switches for easy operation of the system.
- It use LED indicators to detect different conditions of the circuit.
- Preset control to set the trigger time.
- The circuit comprises five sections.
Block diagram of Adjustable Timer Unit
1. Triggering
This section is used to trigger the circuit at the fall of dusk. It is configured around IC 1, which is working in the monostable mode. A variable voltage is fed to trigger pin 2 of IC 1 via LDR and VR 1. In the monostable mode of operation, the output of IC 1 stays high as long as its trigger input stays bellow 1/3 Vcc.
At night, the resistance of LDR is high, so the voltage at pin 2 is at a low level and hence the output of IC 1 goes high at night. The output condition of IC 1 can be detected from LED 1. the output of IC 1 gives power supply to the next stage.
2. Resetting
The next section is used to reset two 4017 decade counter ICs used in the counter section. This is also based on a 555 timer [IC 2]. Its trigger pin 2 is connected to capacitor C3 and resistor R4. In the absence of supply, there is no voltage across capacitor is bellow 1/3 Vcc and its output goes to a high state. The voltage across capacitor C3 increases, so that the voltage at pin 2 crosses 1/3 Vcc. The time period for which the output stays in the high state depends upon resistor R5 and capacitor C4 and is given by the relationship 1.1*R5*C4.
The output of IC 2 is given to the reset pin 15 of decade counter IC 3 and IC 4. These ICs are reset when IC 2 is triggered, and as long as the output of IC 3 is in the high state, the counters sty in the reset position.
3. Oscillator
This section is used to produce a square wave output. It is based on IC 5 an NE 555. Its output frequency depends upon resistors R6 and R7 and capacitor C5 and is calculated by the equation
1.443/( (R7+2R6)C5)
The output frequency is fed to the counter section.
4. Counting
The counter section is used to count the output frequency from the oscillating section. It uses two CMOS CD4017 ICs. The frequency from oscillating section, IC 5, is fed to the input pin of IC 3. IC 3 works as frequency divider and its output is fed to the input pin of IC 4.
The four outputs of IC 4 are combined by using diodes D1 through D4. This combined output is given to the last section. If any of the output is high, then the load is ON state. The condition of this combined output is detected by LED 2.
5. Output
The output section is used to switch the relay ON and OFF. It is based on BEL 187 transistor. The relay is connected at the collector of transistor. Diode D5 is connected to protect transistor. The output from the counting section is fed to the base of transistor through resistor R3. If the output from counting section is high, it biases the transistor and thus the relay is activated.
Working:
At the fall of dusk, the resistance of LDR increases, so a large voltage is dropped across it, resulting in a decrease in the voltage at pin2.
When the voltage at pin 2 drops below 1/3 Vcc, IC 1 is triggered and stays in the high state still morning. Since the output of IC 1 is high, the next three states get power supply.
When C3 is fully charged, IC 2 is triggered and reset pins of IC 3 and IC 4 both get a positive value. Therefore, the first outputs of both ICs are high. This condition changes when the voltage across capacitor C4 crosses 2/3 Vcc, because then the output of IC 2 goes to a low state and the reset pins of IC 3 and IC 4 get a negative pulse each. In this condition IC 3 gets ready to accept pulses from the oscillating section and its outputs are changed.
For each set of ten pulses from IC 5 the outputs of IC 4 are changed one by one. The output time period of oscillating section is about 540.5 seconds, i.e. about nine minutes. Since IC 3 divides the output frequency from IC 5. IC 4 gets a time period 9*10=90 minutes, i.e. one and half hours. So, the outputs of IC 4 are changed every one and half hour’s duration.
When the controller is switched ON, the output Q0 at pin 3 of IC 4 is high and it turns on the load for first one and a half hour. Then, the next output Q1 at pin 2 is high, which switches ON the load for the second one and a half hour. Next, output Q2 at pin 4 goes high, which switches ON the load for the same period again.
When the output Q3 at pin 7 is high it switches of the relay as pin 7 has no connection. Then, the output of IC 6 changes to Q4, Q5, Q6 for each one and a half hour, and when it reaches Q7(i.e. pin 6) the load is again switched on. After one and a half hour, the output is changed to Q8 (pin 9). Since pin 9 of IC 6 has no connection, it again switches OFF the relay.
At the break of dawn, the resistance of LDR decreases, and the trigger pin of IC 1 gets a positive voltage greater than ½ Vcc, so that its output goes low which, in turn cuts off power supply to the next three stages.
Circuit diagram of Adjustable Timer Unit
Description :
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March 13th, 2009 at 10:01 am
hi,
i am interested in electronics house.so plz send me the related details of this projects.
March 18th, 2009 at 8:15 pm
what is the cost of this project? Can I make this as mini project? Please give the details.
March 26th, 2009 at 10:19 am
hi,
i am interested in electronics house.so plz send me the related details of this projects
March 27th, 2009 at 4:11 pm
hi,i want to have the material list for this project and also the qoutation and labour charge of this project.
April 7th, 2009 at 6:35 pm
plz send abstract about this house in detail with minimum one page
April 22nd, 2009 at 3:05 pm
hi,
whts the cost of this project?
i wanna make it as ma major project in engineering stream….
April 22nd, 2009 at 3:07 pm
plz send me the ralated articales of this project…..
May 16th, 2009 at 12:38 pm
hi
i am very interested im this. can i get some more details.
send me urgently.
June 20th, 2009 at 12:29 pm
please send me the details about this project with the full explanation…because i have to do the project in my final year…it s urgent …so i need the details about this immediately…
June 22nd, 2009 at 1:56 am
Hello, like many of their electronic circuits and ideas, but I need something. example I want to mount a card where I can contralar all the light in my house. just light it using a card supplied with 12v and I have a 110v outlet alternating.
Mr. could help me.
TKS
Abraços
Bruno
June 22nd, 2009 at 1:58 am
write from Brazil
July 4th, 2009 at 1:02 am
once i read bout how bill gates house is entirely architectured using the E-home concept……i always wanted to plan a model involvin the same……..if u had any additional ideas along with a better insight to the present project pls do help me out…..
July 8th, 2009 at 4:11 pm
i like this project but it is very big project for my college so plz can you make it simple minor project?
July 11th, 2009 at 10:28 pm
i m interested in electronic house.so send me the circuit diagram.
July 25th, 2009 at 8:18 am
i m interested in electronic house.so pleaseee send me the circuit diagram.
and all the information about this project….
July 28th, 2009 at 4:06 pm
hello! i watn the fully detali of this project like circuit diagram, componont,discription,blockdiagram.please send me in soft copy in my mail.
July 28th, 2009 at 7:57 pm
i need the entire block diagram nd circuit diagram nd cost for this project.
July 30th, 2009 at 9:10 am
hi,
since, i read bout how bill gates house is entirely architectured using the E-home concept……i always wanted to plan a model involvin the same……..if u had any additional ideas along with a better insight to the present project pls do help me out…..
i am interested in electronics house.so plz send me the related details of this projects.
August 5th, 2009 at 4:40 pm
i am interested in electronics house.so plz send me the related details of this project so that i can get stared with making it at the earliest.
Thanks
August 7th, 2009 at 10:18 am
Can you please send some minor electronics projects for J.College level.
August 17th, 2009 at 7:26 pm
I am at final year
Please send me electronics or telecom project.
August 21st, 2009 at 11:49 am
hiiiiii!!!I am in final year student and i am interested in electronics house.so plz send me the related details of this project..
my id is-thisisdkumar@yahoo.com
plz do hurry….
August 24th, 2009 at 6:08 pm
hi!!!! I am final year student.I like this project electronics house you can send me electronics horuse project or about 2051 microcontroller project. Please send me…………
Thanks!!!!
my ID is fy1_gaara@hotmail.com
August 31st, 2009 at 8:44 pm
it sounds interesting… the project is excellent for me… wil u send me the circuit diagram for this? and also the details beyond these phenomenon. thank you and God Bless
August 31st, 2009 at 8:47 pm
pls send this to zaldy_abella@yahoo.com… thanx
September 5th, 2009 at 8:51 pm
hello sir..how r u?
i am an electronics engineering student…n hav to submit my minor project…
i visited ur site n found this project is gud 4 me…
can u plz help me…
plz send the full circiut diagram of this model..i wil b vry thnkful to u….
thnx…
September 5th, 2009 at 8:59 pm
please sent me circuit diagram and detail of this project as soon as possible
September 8th, 2009 at 3:00 am
sir what is the cost of this project. pls reply me as soon as posible. so i plan to starts this project.
October 10th, 2009 at 9:16 pm
sir we are interested in this project. could you send me the complete circuit diagram for this project.we started doing it.could you please help me .i will be rally thankful to you.please send me at rajeshceg3@gmail.com
October 27th, 2009 at 12:19 pm
i m intrested in electronic house. kindly mail me the necessary information regarding that.
November 1st, 2009 at 4:19 pm
very interesting..i would like to do it as my final project.please send me the circuit diagrams,and project report as soon as possible at briansamanya@yahoo.com…thank you
November 4th, 2009 at 3:08 pm
hello… i want to make electronic house as my major project… i’m a final year student… can you please send all the details like circuit diagram, description, components, and budget to my mail id… its yamini892020@hotmail.com
November 8th, 2009 at 11:47 am
plz send me full report and estimate model cost of electronic house plzzzzzzzzz…………
waiting 4 ur response?????????/
November 25th, 2009 at 8:55 am
plzzz send me pcblayout of all circuit diagram as soon as possible at my mailID
I HAVE TO SUBMIT MY ELECTRONICS HOUSE PROJECT IN 2 WEEKS SO PLZZZZZZZZZZZZZZZZZZZZZ SEND ME
December 4th, 2009 at 5:02 pm
plz send me pcb layout of circuit diagram plzzzzzzzzzzz
December 15th, 2009 at 2:04 pm
Sir, I’m interesting about project… Can you send more details regarding to this. I would like to implement this house as my final project. Plz as soon as possible send me the complete circuit diagram and other regarding details…
December 29th, 2009 at 6:16 pm
can yo give me te cost of electronic house?
pls reply fast its urgent.
January 14th, 2010 at 6:14 pm
sir…..i want approx.cost of this project & few more details regarding the working of this project. r the materials easily available??? plz……guide me………
thank you.
January 16th, 2010 at 6:00 pm
Hi,
its gr8 project, i want all detail of “Water level indicator and controller” as i want to implement the same at my home. Please support.
January 16th, 2010 at 6:08 pm
plz send me pcb layout and pcb file of “Water level indicator and controller” if available
January 17th, 2010 at 7:58 pm
i liked the project..
will u please send me the total circuit diagram??
January 18th, 2010 at 5:28 pm
can i make this as mini project? what is the cost of the project ?
January 19th, 2010 at 12:11 am
m interested in electronic house project.. can u pls send me more details on it…
January 22nd, 2010 at 4:04 am
HI… i want to make electronic house as final year project
can you please send all the details like circuit diagram, description, components, and budget to my mail id…
plz plz
my id reena.kapoor38@yahoo.com
January 31st, 2010 at 8:59 pm
hi im aashique doing my btech can i hav the complete details of this project cause i like to do it in my college so can u pl forward mw the details about this project to my id aashique.hussain@gmail.com
January 31st, 2010 at 9:00 pm
its an urgent deal cause i want to submit my project within a week so plz send as quick as possible plzzz
February 7th, 2010 at 10:46 pm
HI… i want to make electronic house as final year project
can you please send all the details like circuit diagram, description, components, and budget to my mail id…its urgent….so plzzzzzzz send it as soon as possible
February 10th, 2010 at 11:17 am
fuck off the electronic house,its useless…….
February 16th, 2010 at 2:56 pm
Hi! i liked this project n wnt to work on dis. pls send the related information n brief view of its material list….
February 18th, 2010 at 11:50 pm
guys many things wont work in this project u hav to do alterations in order to make this circuit to work perfectly so try this out in workbench and then implement in bread board the approx cost will be arround 800 so test it and implement regards AASHIQUE
aashique.hussain@gmail.com
February 19th, 2010 at 2:05 pm
Can you please send me the details of this project?
February 25th, 2010 at 1:55 am
can u please send me the pcb drawing for each circuits fast pleaaaaaaaaaaaaase I neeeeeeeeed them???????
February 25th, 2010 at 1:58 am
al-marsa87@hotmail.com
March 2nd, 2010 at 10:40 pm
please mail the details to m_awan89@hotmail.com
March 5th, 2010 at 5:15 pm
hi,
i am interested in electronics house.so plz send me the related details of this projects.
March 24th, 2010 at 2:40 am
nice project
March 24th, 2010 at 2:46 am
I want to make it as a final year of my university project.pls send me details like circuit diagram, description, requirements,budget n physical view. pls my id: safayeth.bd@hotmail.com
plssssssssssssssssss
April 25th, 2010 at 4:26 pm
this is awesome project.please send me all pcb lay outs,circuit diagrams,lay out of circuits on house.functionong of remote controlled equipments.pls send me the full details about this project..thankuuuuu……my email id:rajeshkannapwf@gmail.com
April 26th, 2010 at 12:51 pm
I HAD FINISHED ALL THE BREAD BOARD CONNECTION ON THIS PROJECT, NOW I HAD TO PROCEED TOWARDS PCB DESIGN SO PLEASE SEND ME THE LAYOUT ON THIS PROJECT………..
SO PLEASE HELP ME MA EMAIL ID :punya_chettri@yahoo.com
May 30th, 2010 at 1:55 pm
Respected Person,
I am very intersted in smart house.
Please send me all detail related to smart house as soon as possible.
I shall be very thankful to you.
—mohit
June 5th, 2010 at 12:52 pm
sir,
i just want more abut electronic house concept
please relay on me,i want to make it my profession
June 5th, 2010 at 12:54 pm
sir,
i just want more abut electronic house concept
June 10th, 2010 at 2:49 pm
please send me this project . this is essential in now-days……..
June 25th, 2010 at 2:29 pm
Dear Sir,
I am so glad that I come across your site as I was looking for similar projects. It is very informative.
Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks and warm regards,
Sushil Rao
July 4th, 2010 at 8:54 pm
hi, friend
this project is simply superb.iam very interested to know all details of the project.please send me the details please——–
bye.
July 20th, 2010 at 9:55 pm
i think i interested to do electronic house project…please send me as soon as possible about the details of this project including the circuit and the pic programming..thank you..
August 16th, 2010 at 10:27 pm
sir..
i’m really intrested in this project..hope u can mail me the whole details about this project ASAP..im very thankful if you give me a hand…
regards..
August 16th, 2010 at 10:28 pm
sir..
i’m willing to do this project..hope u can mail me the whole details about this project ASAP..im very thankful if you give me a hand…
regards..
August 26th, 2010 at 4:01 pm
Dear sir,
I am interested in ELECTRONIC HOUSE.please send circuit detail and more information…
August 31st, 2010 at 4:57 pm
pls……send me all information
September 26th, 2010 at 7:54 am
hi.sir now i am in final year. i want to do this project sir.please send me the details about this project sir.i need layout,circuit diagram and all details to implement this project sir.please sir,send every details to me sir.
October 22nd, 2010 at 7:25 am
I saw this dude, he was wearing a leather jacket, and at the same time he was eating a hamburger and drinking a glass of milk. I said to him “Dude, you’re a cow. The metamorphosis is complete. Don’t fall asleep or I’ll tip you over.”
November 10th, 2010 at 8:54 pm
I am a student of b.tech(EC) final year
I’m interested in this project.
Can you please send me all the details and circuit diagram of this project with component list with its spacification.
December 27th, 2010 at 8:50 am
I am a student of b.tech(EC) final year
I’m interested in this project.
Can you please send me all the details and circuit diagram of this project with component list with its spacification.
January 20th, 2011 at 10:09 pm
I am BCA 2year student from vinayaka mission university.
Please you can sent some C++ project,code.
anilvishwkrmabca@gmail.com
January 21st, 2011 at 2:30 am
hi..
plz send me d details…
January 24th, 2011 at 2:50 pm
hi
You project is the best
Can you please send me all the details and circuit diagram of this project with component list with its spacification. I really need it for my final year project.
January 28th, 2011 at 8:11 pm
HI.
SIR.
i am be final year student i interested in this project please send detail of this project and also pcb layout for same.
I HOPE YOU SEND SOON.
THANKS SIR
February 27th, 2011 at 10:45 am
Hai Sir this is padma from vizag i am very intersted about this Electric House project.
sir i want complete details of this project please send this complete information and circuite connecions about this project.
thanku sir…
March 6th, 2011 at 8:22 pm
can u please send me the details of the project(ckt diagram).
March 12th, 2011 at 5:00 am
Sir,
This project is fantastic.I completed almost full circuit but i have some doubts regarding the circuit diagram.Please send the PCB layout and details of the circuit.Some of the resistance and capacitance values are not mentioned in the diagram.As i am doing this as my Engineering project,could u you please help me with it.
March 24th, 2011 at 2:02 pm
sir,
i would like to do electonic house as my engineering project,for that please send complete details of this project including the PCB layout and circuit diagram for power supply.
i hope you send soon
June 29th, 2011 at 5:39 pm
Hi,sir you did the projects well and good;also your ideas are wonderful and is possible to apply in real time.please give some new ideas for my final year project.
July 8th, 2011 at 4:58 pm
sir,
I want to the projects details pls,pls,pls
July 11th, 2011 at 8:52 am
Sir,
I read your project and found it to be intresting,so with your permission I would like to do electonic house as my engineering project,for that it will be my pleasure if you please send the complete details of this project including the PCB layout and circuit diagram for power supply.
July 14th, 2011 at 6:27 pm
I read your project and found it to be intresting,so with your permission I would like to do electonic house as my engineering project,for that it will be my pleasure if you please send the complete details of this project including the PCB layout and circuit diagram for power supply.
July 19th, 2011 at 10:15 am
i am interested in doing this project .pleaaaaaaaaaase give tell me the cost details,components,circuit diagram etc.
July 19th, 2011 at 3:07 pm
sir,we liked your project. plz send us details of this project like pcb layouts,components, cost details etc as earliest as possible.
July 20th, 2011 at 7:40 pm
plz send me the circuit diagram and other details wid material requirement…..my id is jainmohit619@gmail.com…plz send as early as possible.
July 24th, 2011 at 7:58 pm
hi……sir, can u plz suggest me some more basic projects and their working
July 27th, 2011 at 10:36 pm
sir , plz tell me this may be implimented by using microcontroler ??? if yes then how give abstact on my e m id gopaljeesr@gmail.com plz send as early as possible sir >>>
July 29th, 2011 at 10:26 pm
Sir I am interested in this project.
Will you please send me all details of this project on my email id: chandresh454@yahoo.com.
And please tell me the total cost of this project
August 1st, 2011 at 6:39 am
sir plz tell me the total cost of this project
August 2nd, 2011 at 6:51 pm
Can You Plz send me the details of project and pics too thank you…..
August 5th, 2011 at 6:33 pm
Pls send me the details and circuit diagram of this project to my mail
August 9th, 2011 at 12:25 pm
hi ,am studying Msc electronics and we have to do a project,so can you plz help me by sending details of this project.Am interested on it.
August 11th, 2011 at 1:26 am
please send me the circuit and little information of this…………..
August 11th, 2011 at 9:10 am
dear sir,
please send the project details,and PCB diagrams,and programme codes…if you send it will help to do the final project of my b.eng..so please send sir
thank you
August 12th, 2011 at 9:51 pm
dear sir,
please send me pcb layout and programme code and total cost of this project.
August 13th, 2011 at 9:08 am
please sir send me the details of this project and the PCB layout…
August 23rd, 2011 at 8:52 pm
Dear Sir,
I am so glad that I come across your site as I was looking for similar projects. It is very informative.
Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks and warm regards,
August 24th, 2011 at 6:00 pm
Really your site is very informative.Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks
August 24th, 2011 at 6:01 pm
Really your site is very informative.I want to get the block diagram of this project with more details
Thanks
August 26th, 2011 at 7:14 am
Dear Sir,
I am so glad that I come across your site as I was looking for similar projects. It is very informative.
Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks and warm regards,
August 26th, 2011 at 7:16 am
hello Sir,
great job.am impressed.Really your site is very informative.Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email.
August 28th, 2011 at 11:37 am
Really your site is very informative.Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks
September 8th, 2011 at 8:17 pm
please send me information about Touch sensitive burglar alarm for internal security.I liked this topic alot
September 25th, 2011 at 1:03 pm
hi! please send me parts list off all equipments..
September 25th, 2011 at 7:49 pm
hii
i m intersted in this project can u send me the necessary details…
October 10th, 2011 at 3:19 pm
hello
am a final year student and i wish to do this as my project can u pls send me the cost of this and also related circuits… thank u
October 11th, 2011 at 8:16 pm
Sir I am interested in this project.
Will you please send me all details of this project on my email id: a_dark_knight43@yahoo.com.
And please tell me the total cost of this project:i will wait for your response sir.plezzzz
October 29th, 2011 at 12:03 pm
hello sir
the project of electronic house is quite interesting.can u please send me the abstract of this project.
thanku
November 17th, 2011 at 12:36 am
dear sir,
i want to take it my final year project. please said to me that how much cost will be required for implement it. and if possible please send the lay out and details circuit diagram of this project .my email id is ahmripon@gmail.com
November 17th, 2011 at 6:10 pm
I AM SO SUCH INTRESTED ON THE ABOVE PROJECT THAT IS ELECTRONIC HOUSE AND I WANT DETAIL OF IT.SO PLEASE SEND ME ITS DETAIL.
December 31st, 2011 at 6:05 pm
Hi sir! Really ur project is very excellent. I am interested in doing this as my project work. So plz…. Send me more details about ur electronic house.
January 5th, 2012 at 4:42 pm
hi,i want to have the material list for this project and will you please send the complete details of this project including the PCB layout and circuit diagram for power supply.
My mail id:munawermunnu@gmail.com
January 9th, 2012 at 3:03 pm
sir,i’m interested in doing tis as my project work,so plz…………….
send me more details adout ur electronic house and circuit diagram than total cost of this projuct.pcb layout.i will wait for ur mail so plzzzzzzzzz respn me sir.thank you sir
January 18th, 2012 at 8:50 pm
sir i m a third year ec student… i m searching topics for my mini project. . it should not include microcontrollers … can u please mail me some topics…its urgent …
January 19th, 2012 at 5:57 pm
this is awesome project.please send me all pcb lay outs,circuit diagrams,lay out of circuits on house.functionong of remote controlled equipments.pls send me the full details about this ………shahfahad_3@yahoo.com
January 23rd, 2012 at 4:52 pm
hi im final year student of EC… and im really like this project. so plz send me necessary data to built this projects… so im able to make this projects as my final year….
January 24th, 2012 at 10:17 pm
sir, i m 3rd yr entc student
i am interested in electronics house project. bt
Can I make this as mini project? Please give the details. or mail me some another topics for my mini project.