Bluetooth Blaster Tutorial (blu_fuz: BT mp3 players? YES)

[sonicteambronx]

Before you decide to mod, take a look at this. This would make things eaiser but if you seriously want to mod, Proceed. If your boombox does not have LINE-IN, you might not have a choice and should get the bluetooth cassette

To blu_fuz: there ARE mp3 players with built in bluetooth . even an ipod touch has one.

Please bare with me because this is my very first tutorial . Here are the things I got:

TACTILE PUSH BUTTON SWITCH

MINI FEMALE USB SOCKET/PORT

BLUETOOTH STEREO RECEIVER FOR YOUR BOOMBOX (Gluecifer. There is a Transmitter version and a Receiver version. careful with buying this one).

3.5mm PLUG. USUALLY USED FOR HEAPHONES

MINI USB WIRE You will need 2.

FOR THOSE WHO DON'T HAVE A DEVICE THAT TRANSMITS BLUETOOTH:

USB BLUETOOTH AD2P STEREO DONGLE TRANSMITTER (FOR computers. lets you stream sound wirelessly from a PC to a BT receiver)

ORRRR

BLUETOOTH TRANSMITTER FOR your computer's headphone jack, CD or MP3 PLAYERS (Note that some receivers look exactly
like the Transmitters.)

http://www.google.com/images?hl=en&suge ... 03&bih=566

more things you'll need: Siscors, hot glue gun, soldering iorn/gun (With a thin Tip!), flat screwdriver, knife or blade, spare wires, steady hands, magnifiers and maybe other things that you think might be needed. You can buy any stereo bluetooth receiver, But I'm posting about the one that I bought to mod the box. Same concept though...

b7


Here's the diagram After opening your stuff. Sloppy work I know.. I'm really sorry lol. I'm really hoping this doesn't look
complicated to you.

The line-in has 4 prongs but the (-) part of each channel joins. So all you really need is 3 prongs from the Line-in to
match the wires that are in the the 3.5mm cable. The cable has 3 electric wires. Match them. This might be one of the hard
parts for some of you if you can't easily detect the soldered line-in prongs on the PCB.

3.5mm cable:
Left channel -Usualy white/black (+)
Right channel -Red (+)
Ground -silver/copper (-)

The power button on the bluetooth receiver looks round..Like a tiny orange dust cap. Carefully pry it off with a blade. Here
are the Before and After images

The tactile push button switch will be used to power up the bluetooth device. It has 4 prongs. 2 of each are the same.

Solder them both. Be very careful and take your time working on the bluetooth device. When you're done. Press and hold the power button for a few seconds And it should turn on. If you do it for around 7 seconds, the LEDs will blink red and blue which means that it's searching for a Transmitting device. turn it off and hot glue the the soldered area. hot glue wont do any damage while the bluetooth device is off.

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MAKING A FEMALE USB SOCKET EXTENSION FOR THE CHARGER:

Again,You must have TWO mini male usb Cables. One will be cut and intergrated with the boombox and the other must be kept for charging the bluetooth device. Cut the first end which will not be needed unless you want to cut the wire in half to keep the first end
for future projects. But I recommend the second end of the cable to be longer. Inside the cable, you will find 4 wires:

RED (+)
GREEN Data
WHITE Data
BLACK (-)

The Green and White wires are not needed for this mod. On the diagram above, you will 5 pins on the female usb socket. The 4th pin is skipped So the 5th pin is PIN #4. It was stated on a pinout website (http://www.pinouts.ru). Don't get confused with the pin numbers. We'll help each other out if one of you guys aren't sure. The Red wire from the Male usb cable goes to PIN 1 and the black wire goes to the last pin (Pin #4). Ignore pins #2 and #3. Use hot glue to seal the entire pin area (optional but recommended).
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Drill holes for the button switch and the female usb socket/port

I've done a terrible job on the next pic LOL. I currently don't have the tool to make and shape holes. I even forgot what the tool is
called hahaha. I will place some sort of sheet that would hide that carved area that's around the socket (aka port). The push button switch and socket/port needs some glue too..a Strong one to keep it in place. unless the hot glue can really hold.

When that's done, place the bluetooth receiver wherever you desire and use glue to keep it in place. plug the 3.5mm plug to the 3.5mm socket which is already soldered on the bluetooth device.

If you have better ideas, use 'em because there's always a better way of getting things done.

LET ME KNOW IF I'M A BAD TEACHER

 

[Superduper]

A question and a suggestion. First, what is the purpose of replacing the switch on the MP3 receiver and then the hot glue.

Suggestion: Rather than carve a hole into the boombox to accept a usb cable, why not just install an internal 5v regulator to power and charge the device. It can be powered on anytime the boombox is powered on, thereby not waste energy when the boombox is off. I would venture to guess that some of us would not want to carve that hole for the cable, especially if it's a desirable boombox.

 

[sonicteambronx]

A question and a suggestion. First, what is the purpose of replacing the switch on the MP3 receiver and then the hot glue.

Suggestion: Rather than carve a hole into the boombox to accept a usb cable, why not just install an internal 5v regulator to power and charge the device. It can be powered on anytime the boombox is powered on, thereby not waste energy when the boombox is off. I would venture to guess that some of us would not want to carve that hole for the cable, especially if it's a desirable boombox.

great idea on the charging . i knew there would be a better idea . i just dont have full knowledge on electronics and thats why i did it that way. i knew that someone here knows more than i do. thats why i said:

"If you have a better idea, use 'em because there's always a better way of getting things done."

the boombox will not turn on the bluetooth, it would just charge with the LED emitting in red. you need that replacement button to turn the bluetooth receiver on (By pressing and holding it for a few seconds) and go on search mode (by pressing and holding it until it the LED blinks red and blue) to discover bluetooth transmitters. the hot glue is there to hold that intergrated button in place. or any other glue that would hold it

 

[Superduper]

Ok. I think I see what you are saying about the switch. I thought you were gluing the switch to the board but I see that you mean to glue the switch to the case. Seems like maybe a momentary panel switch would work just as well and allow the switch to be fastened via a ring retainer so as not to break loose when depressed too hard.

As for the internal regulator -- I could build one for anyone that needs one. This device can't consume very much power whether on or charging so it simply makes no sense in my view to not power it internally and save from carving that ugly hole into the boombox. It needs to be a regulator though and not a simple resistor since digital circuits require a stable voltage supply.

 

[sonicteambronx]

Ok. I think I see what you are saying about the switch. Seems like maybe a momentary panel switch would work just as well and allow the switch to be fastened via a ring retainer so as not to break loose when depressed too hard.

As for the internal regulator -- I could build one for anyone that needs one. This device can't consume very much power whether on or charging so it simply makes no sense in my view to not power it internally and save from carving that ugly hole into the boombox. It needs to be a regulator though and not a simple resistor since digital circuits require a stable voltage supply.

Yes I know its ugly but i can eliminate it with a few fixes. it was my first time and didn't have the proper tool to shape the hole like the usb port and I'm not that savvy with electronic components. I'm not yet fully prepeared. how much mAh would the regulator give? The bluetooth battery charger gives 400mAh

 

[blu_fuz]

This is very understandable and I can follow all the pictures/drawings. Thanks for putting this together .

 

[Strānj-Bōōmbŏks]

That's SO cool STBNYC!!! Thanks, I'm definitely gonna try this out!!!
Thanks a lot for taking the time and making this DIY Step-By-Step Diagram...

 

[sonicteambronx]

Thanks ..If any trouble, lets all help each other out.

 

[Superduper]

Ok. I think I see what you are saying about the switch. Seems like maybe a momentary panel switch would work just as well and allow the switch to be fastened via a ring retainer so as not to break loose when depressed too hard.

As for the internal regulator -- I could build one for anyone that needs one. This device can't consume very much power whether on or charging so it simply makes no sense in my view to not power it internally and save from carving that ugly hole into the boombox. It needs to be a regulator though and not a simple resistor since digital circuits require a stable voltage supply.

Yes I know its ugly but i can eliminate it with a few fixes. it was my first time and didn't have the proper tool to shape the hole like the usb port and I'm not that savvy with electronic components. I'm not yet fully prepeared. how much mAh would the regulator give? The bluetooth battery charger gives 400mAh

With a proper heatsink, the regulator can pass 1.5amps or 1,500mA. The actual capacity will depend upon the max voltage in that needs to be dropped. The higher the differential, the lower the current that the regulator can handle since the excess is dissipated as watts (volts x amps). So if voltage is increased, amps needs to descrease in order to maintain the same wattage dissipation. The regulator can accept any voltage-in that a standard boombox can supply and convert that to a rock steady 5-v out.

 

[amishmansteve]

I would love to try this mod, now the question is which boombox do I use for it.....

Great Tutorial!

 

[sonicteambronx]

Ok. I think I see what you are saying about the switch. Seems like maybe a momentary panel switch would work just as well and allow the switch to be fastened via a ring retainer so as not to break loose when depressed too hard.

As for the internal regulator -- I could build one for anyone that needs one. This device can't consume very much power whether on or charging so it simply makes no sense in my view to not power it internally and save from carving that ugly hole into the boombox. It needs to be a regulator though and not a simple resistor since digital circuits require a stable voltage supply.

Yes I know its ugly but i can eliminate it with a few fixes. it was my first time and didn't have the proper tool to shape the hole like the usb port and I'm not that savvy with electronic components. I'm not yet fully prepeared. how much mAh would the regulator give? The bluetooth battery charger gives 400mAh

With a proper heatsink, the regulator can pass 1.5amps or 1,500mA. The actual capacity will depend upon the max voltage in that needs to be dropped. The higher the differential, the lower the current that the regulator can handle since the excess is dissipated as watts (volts x amps). So if voltage is increased, amps needs to descrease in order to maintain the same wattage dissipation. The regulator can accept any voltage-in that a standard boombox can supply and convert that to a rock steady 5-v out.

Cool thanks for the help,Super.

 

[sonicteambronx]

I would love to try this mod, now the question is which boombox do I use for it.....

Great Tutorial!

hmm...choose wisely

 

[oldskool69]

Very cool mod!

 

[Lasonic TRC-920]

This is a great thread. I have been working in this very direction, was just waiting till I bought a new cell phone which I did yesterday and ordered a bluetooth receiver as well.

Superduper, I may hit you up for that charging circuit once I get everything here and have a look at it all.

Thanks everyone for posting!

 

[GHETTOBLAST]

Thanks allot Sonic, I'm gonna try it soon.

 

[tweeters]

STBNYC,

Thanks for the tutorial to get us all inspired

i'd like to ask a couple of questions.
If i remember correctly some transmitting devices(like sony -i think) can select different qualities of bluetooth signal, with the highest quality comes the shortest range, but sound quality can be sacrificed to give better range.
What range/quality can you get ?
and was there a little aerial inside the original BT receiver box, or can the circuit board just go anywhere in the boombox ?