Need help>> as soon as possible! - Page 2 - Electronic Circuits Projects Diagrams Free

audioguru · 11th February 2008, 02:19 AM

Hi Keri (the great person)
I am also 62 years young.
Cheers

whiz115 · 11th February 2008, 02:54 AM

Quote:

Originally Posted by KMoffett

In this this day and age, I (62 years old) can't believe I need to say this to a young college student, but:
"Google what you need": IR repeater circuit.
Ken

lol....

KMoffett · 11th February 2008, 12:36 PM

Abeer_engjbr,

I'm not sure if "I" can offer any more help. Communications technology is not my specialty. I work with researchers and students all the time in fields where I'm way out of my league. But, have learned to just keep asking questions until we can clearly communicate. The more specific the question the better, but also keep people aware of how it relates to your overall project.

Good hunting!

Ken

Daniek · 11th February 2008, 03:14 PM

http://www.bcae1.com/circuits.htm

Took me about 1 minute. doesn't seem like a very big project to spend 3 months on...

Abeer_engjbr · 11th February 2008, 05:19 PM

thx Daniek for your help... you know my project consist of two parts: software by java or C++ to turn mobile into remote control , and hardware to solve the weak IR signal comming from mobile and testing in labes in addition to interferance problem . and i need spare time after that to write the project documentation and prepare the presentation >> all of that while am taking 3 coureses this semester... so 3 monthes is not quiet enoughe..

blueroomelectronics · 11th February 2008, 05:25 PM

Quote:

Originally Posted by Abeer_engjbr

hey
it's not urgent, and i need to bulid it withen two monthes, but i need an idea what to use , how to start!<< as this is my graduating project and the Dr need to see what have i done so far.. and to be hounest i am not that good when it comes to design circuits.. usefull sites or books would be a great help! thx

Isn't the point of the assignment is so that you become good at designing circuits? You're supposed to be demonstrating your skills, so show us what you've done and often we're happy to help.

Abeer_engjbr · 11th February 2008, 05:39 PM

you are right ...looool ... but.... i said earlier that my Dr is not offering any help.. and while we are taking courses in electrical engineering and labes of electronics and communication, our goal is to understand in addition to get high grades.. but realy designing circuits have'nt got many attention from our Dr.s.. and when we graduate after 3 monthes am sure that things would be better in real life as we will depend on our knowledge to go on... you know i didn't ask to give me the circuit itself but i asked for useful books or sites to build it then i'll test the result... because as i said am not that good in designing circuits so i don't know how to start.....
A.j

blueroomelectronics · 11th February 2008, 05:47 PM

Google is an excellent tool, there have to be hundreds of IR projects out there.
Try "IR Repeater"
http://www.cedarnet.org/smartware/Hardware/IR_Repeater/

Abeer_engjbr · 15th February 2008, 09:53 AM

Hello every one... and thx alot for all your help

..

i need to know is there a way to mesure the power of the ir signal comming from mobile by a circuit or so,, and how to amplify it (as it is low) by a java code or C++ code....
another queistion what is 555 timer and what is it's purpose in the ir repeater circuit

....
thx..

Abeer_engjbr · 15th February 2008, 10:09 AM

loool
where is every body i know!

KMoffett · 15th February 2008, 11:53 AM

Abeer_engjbr,

Many of us have jobs and lives outside of forums (oh, say it ain't so!), and consider these discussions entertainment, so respond as time permits. I'm up at 5Am because I couldn't sleep.

First, as to testing the IR output level:
http://www.electronics-lab.com/projects/test/003/
I have not used this circuit, but it looks like it might work.
I would replace the meter with an oscilliscope to better visualize the signal. Google: [IR remote control tester] for more possibilities.

Amplifing the signal (coming out of your transmitter) by Java, C++, or any programm is not possible. It's a function of the electronic hardware. You would need something to receive the weak signal from your transmitter, amplify it, and send out stronger version to the final destination...an IR repeater. Did you read blueroomelectronic's link?:
http://www.cedarnet.org/smartware/Hardware/IR_Repeater/
(A really bad schematic.)
Read "How it works" in the above link for the explanation of the 555's function. Or is this electronic hardware an area totally outside your current educational background?

Ken

Abeer_engjbr · 15th February 2008, 02:28 PM

Ken
i know that many of you have lives( OF COURSE!) , but am a student you know and don't get much sleep.. and realy if your entertainment helps the world becoming a better place... GOD BLESS YOU!

Quote:

I would replace the meter with an oscilliscope to better visualize the signal. Google: [IR remote control tester] for more possibilities.

what is the meter
and the second link contain a circuit that works with 58kHz remotes, not 40kHz so what can i do in order to deal with 40kHz?
and to be hounest this is my first time to hear about 555 timer....

Abeer_engjbr

blueroomelectronics · 15th February 2008, 02:43 PM

Yea it's an ugly schematic, but there is a nicer one on his site.
And no progamming required. Read about the 555 and you should be able to figure out what values you need to modulate it a 40kHz.
PS the LM555 is the most popular IC ever made.
If this is a school project then it's up to you to learn how it works, if you need an IR extender they're are nice ones for sale on the net. Some have RF.

Abeer_engjbr · 15th February 2008, 02:54 PM

am 21,, and its not a school project, its a graduating project, may i know what is your occupation?

Quote:

Read about the 555 and you should be able to figure out what values you need to modulate it a 40kHz.

i'll read about it now , and if i have any Q afterwards may i ask you ?

blueroomelectronics · 15th February 2008, 03:01 PM

Quote:

Originally Posted by Abeer_engjbr

am 21,, and its not a school project, its a graduating project, may i know what is your occupation?
i'll read about it now , and if i have any Q afterwards may i ask you ?

Graduating project! You want to submit a simple IR extender copied directly from the web? How are you going to explain its function? You're SUPPOSED to be submitting a finished project that YOU UNDERSTAND.

As for questions post em here or search google.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11th February 2008, 02:19 AM	(permalink)
audioguru	Hi Keri (the great person) I am also 62 years young. Cheers __________________ Uncle $crooge

11th February 2008, 12:36 PM	(permalink)
KMoffett	Abeer_engjbr, I'm not sure if "I" can offer any more help. Communications technology is not my specialty. I work with researchers and students all the time in fields where I'm way out of my league. But, have learned to just keep asking questions until we can clearly communicate. The more specific the question the better, but also keep people aware of how it relates to your overall project. Good hunting! Ken __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931)

11th February 2008, 03:14 PM	(permalink)
Daniek	http://www.bcae1.com/circuits.htm Took me about 1 minute. doesn't seem like a very big project to spend 3 months on...

11th February 2008, 05:19 PM	(permalink)
Abeer_engjbr	thx Daniek for your help... you know my project consist of two parts: software by java or C++ to turn mobile into remote control , and hardware to solve the weak IR signal comming from mobile and testing in labes in addition to interferance problem . and i need spare time after that to write the project documentation and prepare the presentation >> all of that while am taking 3 coureses this semester... so 3 monthes is not quiet enoughe..

11th February 2008, 05:39 PM	(permalink)
Abeer_engjbr	you are right ...looool ... but.... i said earlier that my Dr is not offering any help.. and while we are taking courses in electrical engineering and labes of electronics and communication, our goal is to understand in addition to get high grades.. but realy designing circuits have'nt got many attention from our Dr.s.. and when we graduate after 3 monthes am sure that things would be better in real life as we will depend on our knowledge to go on... you know i didn't ask to give me the circuit itself but i asked for useful books or sites to build it then i'll test the result... because as i said am not that good in designing circuits so i don't know how to start..... A.j

11th February 2008, 05:47 PM	(permalink)
blueroomelectronics	Google is an excellent tool, there have to be hundreds of IR projects out there. Try "IR Repeater" http://www.cedarnet.org/smartware/Hardware/IR_Repeater/ __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

15th February 2008, 09:53 AM	(permalink)
Abeer_engjbr	Hello every one... and thx alot for all your help .. i need to know is there a way to mesure the power of the ir signal comming from mobile by a circuit or so,, and how to amplify it (as it is low) by a java code or C++ code.... another queistion what is 555 timer and what is it's purpose in the ir repeater circuit .... thx..

15th February 2008, 10:09 AM	(permalink)
Abeer_engjbr	loool where is every body i know!

15th February 2008, 11:53 AM	(permalink)
KMoffett	Abeer_engjbr, Many of us have jobs and lives outside of forums (oh, say it ain't so!), and consider these discussions entertainment, so respond as time permits. I'm up at 5Am because I couldn't sleep. First, as to testing the IR output level: http://www.electronics-lab.com/projects/test/003/ I have not used this circuit, but it looks like it might work. I would replace the meter with an oscilliscope to better visualize the signal. Google: [IR remote control tester] for more possibilities. Amplifing the signal (coming out of your transmitter) by Java, C++, or any programm is not possible. It's a function of the electronic hardware. You would need something to receive the weak signal from your transmitter, amplify it, and send out stronger version to the final destination...an IR repeater. Did you read blueroomelectronic's link?: http://www.cedarnet.org/smartware/Hardware/IR_Repeater/ (A really bad schematic.) Read "How it works" in the above link for the explanation of the 555's function. Or is this electronic hardware an area totally outside your current educational background? Ken __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931)

15th February 2008, 02:43 PM	(permalink)
blueroomelectronics	Yea it's an ugly schematic, but there is a nicer one on his site. And no progamming required. Read about the 555 and you should be able to figure out what values you need to modulate it a 40kHz. PS the LM555 is the most popular IC ever made. If this is a school project then it's up to you to learn how it works, if you need an IR extender they're are nice ones for sale on the net. Some have RF. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com