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Very technical topic! |
emiNEGRU
Joined: Oct 06, 2004
Posts: 25
PM |
Hello. I will need the experience of some hardware doctors in this!
I need to make something from a bluetooth headset, or from its parts: i must reduce a bt headset to the following piece :
1. bt chip+
2. baterry+
3. 2 pins for the speaker!
I will need to strip the microfone off, start button, volume buttons, leds , everithing!!
I need to end up with a device that will pair with bluetooth phone, and receive the audio signal from it, and send it to pins to wich I will attach a small speaker! The whole ideea is that I need to build a this device, wich will be very very small (max 1cm x 1cm x 1cm) without the battery, and will work in a wet enviorenment!! The problem with the water i will solve by putting everything in sylicon !! 
So any suggestion???
1. what bt chip i use??
2. where i get some docs of it?? (pins, etc)
3. what does a bt chip need to work in there conditions?? (auxiliary parts or chips???)
If there is a hardware section please move my post!
I have attached a logical scheme for better understanding! In the yellow part is speaker wich is no problem. the core is the cip with ?other? component!
If I could find a chip that works only power from battery and line out to speaker, and it does not need anymore parts (black rectangles in scheme) it would be EXCELENT!!!!
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[ This Message was edited by: emiNEGRU on 2005-09-22 23:57 ] |
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emiNEGRU
Joined: Oct 06, 2004
Posts: 25
PM |
anybody??
just a few words??
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Dyce9984
Joined: Apr 16, 2004
Posts: 168
From: London
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I really wouldn't bother because you will definately have problems hearing them, you'll need an amplifier of some description to increase the gain, or all you will hear is noise, and on top of that you'll suffer massive lag, as bluetooth 1.1 is absolute rubbish for transfering realtime stereo audio signals. because of the clocking cycle, which makes bluetooth what it is.
Seriously mate don't bother
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deluded
Joined: Sep 14, 2005
Posts: > 500
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Sounds interesting, but i'm afraid i can't be of much help. What's the reason behind your little project though?
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max_wedge
Joined: Aug 29, 2004
Posts: > 500
From: Australia
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it's not that simple. You need a whole logic board with the chip (not just the chip) - even the smallest bt headset I know of will have a board bigger than 1cm by 1cm. You will also need an amplifier, as Dyce9984 suggests, unless the headset earphone is loud enough for your needs.
Have you considered plugging the phone into an fm transmitter, and using a mini-fm reciever to pick up the phones audio via the transmitter?
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Burgaz
Joined: Mar 25, 2004
Posts: > 500
From: Cwmbranistan, S. Wales
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I can probably get my hands on a BT chip or two if you want them? They'll be CSR(Cambridge silicon radio) 8x8 bga devices if they're any good to you? Just let me know?  |
emiNEGRU
Joined: Oct 06, 2004
Posts: 25
PM |
i just need to build this!!!!! and for the bt chips: don`t know yet. will do some research!
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emiNEGRU
Joined: Oct 06, 2004
Posts: 25
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so no more answers?
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AASHISH
Joined: Aug 11, 2005
Posts: 2
From: India
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wow wot a great idea mate !! Keep up the gud work |
emiNEGRU
Joined: Oct 06, 2004
Posts: 25
PM |
will try. bt it proves to be a very difficult project!
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Posted: 2005-09-22 22:47
