Bluetooth USB adaptor modification

Sep 06, 2005 8 Replies

adaptor

Forget it. These adapters are fairly dumb devices and require a lot of the protocol handling to be done by the host processor, which is no problem for a loaded Pentium but it is an impossible task for a small MCU. Better use smart module from, for instance, Ezurio

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or the likes. They have a risc processor on board which handles all the BT protocol stuff and provide a simple serial interface to your MCU. You can configure these modules through modem-style AT commands.

Meindert

Dear all,



I want to built a serial communication from MCU to Pocket PC. As Bluetooth development module is quite expensive, I want to buy a Bluetooth USB adaptor (~HK$100) to modify it. Anybody try it before? Please advice



Thank you


Thank you for your advice

Any idea how expensive these modules are? Their website does not list a single US distributor.

-M Noone

The Ezurio Blu2i modules are available theough Farnell. I use them in an OEM product (simply because I did not want to have the issues of certification etc), but I don't buy at Farnell prices ;)

I believe they are about =A375 in small quantities from retail distribution, maybe less. If you can't find them in US distribution, it could be because it's a european company (Ezurio is a management buyout of TDK Europe). Farnell sells a little devkit unit for the beast as well (a little expensive, although necessary as the module sits on a very fine pitch connector that I have to hoard to make sure I'll hit production).

Cheers

PeteS

That's a little too spendy for my blood. If you go to sparkfun.com and do a search for RF-BT-SMD - you'll find a serial bluetooth module for $50 in single quantities.

-M Noone

I pay EUR 42.50/unit in qty's of 100. That equals $53.13. If there's no US distributor, you could try and contact them directly. I found Ezurio quite responsive, I even had a few e-mail exchanges with the developer of the firmware.

Meindert

This connector can be found at Digikey, partno H2758-ND. Over 6k in stock.... I always buy them there, since the European distributors of Hirose do not stock them or have huge lead times.

Meindert

That is indeed cheap. I just checked their 100 up price: $35.

Meindert

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