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sajeev
Joined: 29 Apr 2005
Posts: 103
Helped: 2
Location: Kerala-India
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 22 May 2005 18:12 bluetooth technology using pic micro controller |
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| What is bluetooth,any idea of implementing using pic.I want to make a project using it.Please help......
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gorkin
Joined: 27 Feb 2002
Posts: 679
Helped: 11
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23 May 2005 17:10 Re: bluetooth technology using pic micro controller |
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Bluetooth in single words are transceiver for cable replacement. For acquire more information, visit the www.bluetooth.or and get the SIG documments.
That are some transceivers with lot of "services", the most common are SPP and FTP.
For connection with PIC microcontroller, I recommend the LMX9820 from National Instruments, because they have built in the "stack" or communication "layer", then, the work for implemantation in Your product made easy... The main problem of the LMX9820 are the class. Itīs device are class II, then the maximun distance are 10 meters.
Gorkin.
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23 May 2005 17:10 Ads |
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trend
Joined: 14 Dec 2004
Posts: 86
Helped: 5
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24 May 2005 2:19 Re: bluetooth technology using pic micro controller |
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interesting... I looked at the LMX9820 module somewhat.. 22$ for the module isn't horrible, but i wish i could get something closer to 10$ per module. Also, couldn't you hookup a 2.4gighrtz antenna to these modulesand get even better distance?... I am thinking about having a device that you could sit in my office, and know if any rfid product within my office (100feetor so) leaves (looses signal).
Any ideas?
thanks
Lee
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gorkin
Joined: 27 Feb 2002
Posts: 679
Helped: 11
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24 May 2005 14:42 Re: bluetooth technology using pic micro controller |
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Hi!
These devices are classII, then the max. distance are 10m (I have one LMX9820 evaluation module with chip antenna and the max. distance are around 5 to 6 meters). In case of use external antenna I think 10 to 15m max.
Are others modules with very low prices (TECOM BT3014A - Class I - without antenna) at $12.5, but the user must write all layers for comunication (HCI up to any "service layer" like SPP or FTP). In this case, the main problem are the time for development. Other option are the utilization or build the own Ad-Hoc netwok, not recommended, but possible. In this case, only HCI layer are needed.
Gorkin.
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