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Vitality,

Vitaliy wrote:

> Matt Pobursky wrote:
>
>> We used the Blueradios module that Sparkfun uses because it's the
>> same footprint as the Roving Networks module. The A7 Engineering
>> module is attractive too, about $20 @1000 pcs. Almost all the modules
>> I looked at use the CSR chipset, it seems to be the most popular.
>
In the company I worked (contracted) currently, I am using CSR BT 
chipsets.  We make car handsfree kits and are using these CSR ready made 
modules and buy by 100K pcs per month. It costs about $8-12 at these 
quantities.

> So in your opinion, if you're dealing with 1k+ quantities, is it less 
> expensive to buy rather than manufacture? Or have you decided to go 
> with a ready-built module because of time constraints?

Ready made modules is the best option. They are pre-calibrated and have 
already pre-programmed stack and MAC/OUI addresses.  Bluetooth 
calibration needs expensive RF equipments.

For the software, on CSR chipsets, the Bluelab dev kit is needed.  You 
can purchase this directly at http://www.btdesigner.com and have to 
learn the environment and bluetooth standards. But if you are in a 
hurry, contact me offlist.  I maybe can help you on this project.

regards,

Reggie
http://www.microelektronics.com


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Message-ID: <45110CA2.2000608@microelektronics.com>
Date: Wed, 20 Sep 2006 17:40:50 +0800
From: Regulus Berdin <rberdin@microelektronics.com>
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To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Subject: Re: [EE]: Bluetooth to RS232 converters -- source, schematics?
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Vitality,

Vitaliy wrote:
> Matt Pobursky wrote:
>>We used the Blueradios module that Sparkfun uses because it's the
>>same footprint as the Roving Networks module. The A7 Engineering
>>module is attractive too, about $20 @1000 pcs. Almost all the modules
>>I looked at use the CSR chipset, it seems to be the most popular.
In the company I worked (contracted) currently, I am using CSR BT 
chipsets.  We make car handsfree kits and are using these CSR ready made 
modules and buy by 100K pcs per month. It costs about $8-12 at these 
quantities.

> So in your opinion, if you're dealing with 1k+ quantities, is it less 
> expensive to buy rather than manufacture? Or have you decided to go with a 
> ready-built module because of time constraints?
Ready made modules is the best option. They are pre-calibrated and have 
already pre-programmed stack and MAC/OUI addresses.  Bluetooth 
calibration needs expensive RF equipments.

For the software, on CSR chipsets, the Bluelab dev kit is needed.  You 
can purchase this directly at http://www.btdesigner.com and have to 
learn the environment and bluetooth standards. But if you are in a 
hurry, contact me offlist.  I maybe can help you on this project.

regards,

Reggie
http://www.microelektronics.com


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