Simple transmitter question

Hello all,

A few friends of mine are looking to produce some sort of transmitter which we are making for a engineering writing class here at UCSB. We are second quarter freshman computer engineers so we really don't know much but we want to make a simple item which makes a noise when a button is pressed on a remote. How would we go about searching on how to create something like this? We want to be able to press a button on a type of remote control and have another object create a loud sound possibly 30 feet away or so. Any help is appreciated.

Thanks
Cameron

For the Transmitter/Receiver:

* https://www.linxtechnologies.com/en/products/remotes
* http://www.lemosint.com/lemos-rf-modules/

Then tie the output of the Transmitter to your noise making device using a MOSFET or Power Transistor or Relay.

Google a bit for IR transmitter/receiver. It is relativly simple to understand and implement. Here is an example: http://www.circuitstoday.com/wp-content/uploads/2009/03/ir-audio-link-circuit.jpg It transmits sound directly and with the correct leds, it could reach 10 metres. If you wanna get a bit more advanced you could try something like this: http://www.lbenchindia.com/Finalyear_projectscircuits/ir transmitter and receiver using 555 timer.gif, this is encoded so that IR light out of the enviroment wont affect your transmission.
Yours sincerely,
Boi Okken

Hi Cam

There You go all info contained in here for you You need to make adjustments to code etc for beep on the reciever side shouldnt be too difficult for you to adjust the code accordingly

Here is another circuit for you again adjust accordingly

And here is another example only written In c this time

Hopefully that should give you some ideas or there is IRDA from mobile phones as well using J2ME could be usefull couldnt it Interesting

If you look at the proton compiler suite although they still havent included IR out You could use RC5 in of the proton compiler by les johnson www.crownhill.co.uk

Page 327

Here is the manual nice and easy for you

Read comments on this page too Why no infra red on Blackbury seeing as we ae looking at blackberry too "Nice article on the front page I notice "

http://forums.crackberry.com/blackberry-playbook-f222/why-no-ir-665464/

Then also consider the Xpera Sony but this has some probelms as well Keeps crashing , uhm No explanation with regards this too I notice ,"Ho Hum "

And the samsung yes well uh uh uh We didnt even think about extra connectivity with regards an extranal socket Rs232 socket or Infra red tx rx pair for IRDA

Nah forgot about that !! Not to worry

hmmmm !! Not much you can say to this one is there

You have a TV and when you press the remote don't you get a lot of just noise? HOW OBVIOUS IS THIS, something you do every day!

Believe it or not

Not that obvious but that is another method of doing this however If you want to learn how remote control codes work then it might be a good idea to study the Sony IR remote control frames, combined with Phillips RC5 to see how not only remote control codes work but also Manchester encoding leading you on to a far better more educated approach to solving problems and a decent career path

This in turn allows your to write you own codes, moving forward into roiling code for example should this person decide to construct alarm systems , learning how to program a cpu to achieve this and also allowing you to gain a far better understanding of how they modulate infra red for transmission of remote codes

So although this sounds stupid and longwinded part of the reason why this standard appears to be obvious in some respects which it evidently is the main reason why I would possibly adopt this approach is ordinary remote codes can be broken So it is quite important that a far more involved and possibly more difficult approach is undertaken so as to produce someone who is capable of writing not only excellent code but also becomes a decent designer plus programmer plus network programmer as well as being a competent engineer who can answer questions and answer them properly unlike so many people who have shall we say been severely neglected with regards decent standards of education and training through no fault of their own save that of total ignorance by bad leadership which could have been rectified years ago


I sure being the professional that you are Earl you would understand why I’m make this point , because it isn’t that obvious in fact its so obvious how poor these standards are its embarrassing hence why we have so many problems with so little understanding and a completely wrecked economy all of whom refuse to accept responsibility for their actions both short term and long-term

I would rather show people how to do thing the right way round instead of dishing out second rate tutorials and attempting to make fools of people discouraging those who want to do better So that some pompous importance can point fingers

This way earl we wind up with people that are employable rather than a government full of self importance ready to slash benefits and attempt to start a civil war at the expense of simple minded people who know no better and have never been afforded due care and attention

I think I’ve hit this smack on the nose for you I trust you will take this advice on board as well