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eng_ahmed22
Joined: 07 Jun 2005
Posts: 178
Helped: 13
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 11 May 2008 13:36 Connecting two embedded systems using Bluetooth USB Dongle? |
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How can I build system like that??
How can i connect 2 or more embedded systems using this Bluetooth USB Dongle?
why Bluetooth USB Dongle? it is cheap and available everywhere.
any advice is appreciated.
thanks alot
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1230
Helped: 61
Location: Toronto, Canada
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| 11 May 2008 16:22 Connecting two embedded systems using Bluetooth USB Dongle? |
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| You'll need RS232 based Bluetooth adapters, the USB ones will require a USB Host device.
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ignitedindian
Joined: 13 Mar 2007
Posts: 11
Location: Chennai
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| 11 May 2008 18:03 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| where can I get a RS232 bluetooth dongle???
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hrhgroup
Joined: 27 Jun 2005
Posts: 268
Helped: 13
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| 11 May 2008 19:36 Re: Connecting two embedded systems using Bluetooth USB Dong |
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Dear
You can use something like this:
But I think these are so expensive!
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1230
Helped: 61
Location: Toronto, Canada
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| 12 May 2008 1:01 Connecting two embedded systems using Bluetooth USB Dongle? |
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| Much cheaper to use XBee
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eng_ahmed22
Joined: 07 Jun 2005
Posts: 178
Helped: 13
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| 12 May 2008 9:10 Connecting two embedded systems using Bluetooth USB Dongle? |
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thanks a lot for everybody for replying
but the (Bluetooth Serial Adaptor) is not available everywhere.... 
And the Bluetooth USB Dongle is available. and cheap too.
how can i overcum this.
thank you all
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creative_35
Joined: 10 Apr 2006
Posts: 95
Helped: 6
Location: Under Mango Tree
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| 12 May 2008 16:28 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| blueroomelectronics wrote: |
| Much cheaper to use XBee |
hi friends,
I am new to Xbee technology
and I did a search on net and read some documents abt Xbee.
(http://www.makingthings.com/documentation/tutorial/xbee-wireless-interface/tutorial-all-pages)
Now I have some doubts.
Is it possible to communicate(setup) and Xbee module with a microcontroller without using it's "makecontroler" board?
If so, what's it's communication media? RS232, USB, UDP or all?
If not, Is it possible to setup one Xbee module as master and other as slave and communicate each other ?
If anyone experienced with Xbee pls explain.
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xiaofan
Joined: 11 Apr 2008
Posts: 6
Helped: 1
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| 13 May 2008 12:12 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| eng_ahmed22 wrote: |
thanks a lot for everybody for replying
but the (Bluetooth Serial Adaptor) is not available everywhere....
And the Bluetooth USB Dongle is available. and cheap too.
how can i overcum this.
thank you all |
Unfortunately you can not overcome this. You need a USB host to communicate with a USB slave (your bluetooth usb dongle is a USB slave). And even if you have an embeded host, probably it will not support bluetooth.
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1230
Helped: 61
Location: Toronto, Canada
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| 13 May 2008 16:15 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| creative_35 wrote: |
| blueroomelectronics wrote: |
| Much cheaper to use XBee |
hi friends,
I am new to Xbee technology
and I did a search on net and read some documents abt Xbee.
(http://www.makingthings.com/documentation/tutorial/xbee-wireless-interface/tutorial-all-pages)
Now I have some doubts.
Is it possible to communicate(setup) and Xbee module with a microcontroller without using it's "makecontroler" board?
If so, what's it's communication media? RS232, USB, UDP or all?
If not, Is it possible to setup one Xbee module as master and other as slave and communicate each other ?
If anyone experienced with Xbee pls explain. |
An XBee master is often called a PAN controller, you can control many XBee devices from one master. Some are MESH which means that XBees can relay data from one device to another to extend the range. The I/O on the module is 3.3V tolerant so you'll need a level converter to talk with a 5V device.
XBee use AT type commands (similar to SMS or Modem type commands)
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sajjadi335
Joined: 28 Feb 2006
Posts: 17
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| 14 May 2008 7:26 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| I don't know what sort of embedded system you want to use. First of all, there are microcontrollers there with a usb host integrated. Second, you could easily use usb host interface chips, like those from cypress. Then you'll be able to use your usb bluetooth dongle (although it needs some tricks, because it's not simple usb).
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eng_ahmed22
Joined: 07 Jun 2005
Posts: 178
Helped: 13
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| 14 May 2008 7:53 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| xiaofan wrote: |
| eng_ahmed22 wrote: |
thanks a lot for everybody for replying
but the (Bluetooth Serial Adaptor) is not available everywhere....
And the Bluetooth USB Dongle is available. and cheap too.
how can i overcum this.
thank you all |
Unfortunately you can not overcome this. You need a USB host to communicate with a USB slave (your bluetooth usb dongle is a USB slave). And even if you have an embeded host, probably it will not support bluetooth. |
Thanks xiaofan for your reply.
but is there any other cheap and easy method to exchange data between two embedded systems without using cables or/and wires, I mean simple wireless data Tx Rx??
the speed is not important at all, I mean very slow data rate is acceptable.
also it is possible (as a beginning) send data from one system to the other one (i.e one will transmit data to the other one which will not send any data.)
thanks a lot
Ahmed
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1230
Helped: 61
Location: Toronto, Canada
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| 14 May 2008 15:51 Connecting two embedded systems using Bluetooth USB Dongle? |
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| XBee is cheap and easy, it's about the least expensive that'll do what you want.
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jayveejay
Joined: 13 Jul 2006
Posts: 2
Location: Kitchener-Waterloo, Canada
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| 21 May 2008 16:18 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| blueroomelectronics wrote: |
| XBee is cheap and easy, it's about the least expensive that'll do what you want. |
Though I have not used XBee, I agree with blueroomelectronics. I took a look at the link blue provided and took note that the XBee modules are made by Maxstream. I did some work two years ago with Maxtream short range radio modems and implemented a four node LAN for an remote control mining application. The LAN comprised four to five nodes driven with PIC uCs. The Maxstream radio modems used an internalspreadspectrum protocol in the ISM radio frequencies. A TDMA protocol was developed for the nodes on the LAN to schedule communciations between the nodes. Having also worked with Bluetooth on embedded systems the Maxtream modules were easier to use.
Regards.
JVJ
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Slayerza
Joined: 22 Oct 2005
Posts: 320
Helped: 22
Location: South Africa
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| 21 May 2008 20:17 Re: Connecting two embedded systems using Bluetooth USB Dong |
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I have not used Zigbee yet, but I have used Bluetooth modules from KC WireFee with great success. The modules were 3.3V tolerant and connected to the MCU with an integrated serial port. Footprint of the modules is 17mmx22mm and feature and integrated antenna.
The modules also use the AT command structure and as such controlling the modules is quite simple from a MCU point of view.
Cheers,
Slayer
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jayveejay
Joined: 13 Jul 2006
Posts: 2
Location: Kitchener-Waterloo, Canada
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| 22 May 2008 13:01 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| Slayerza wrote: |
| I have not used Zigbee yet, but I have used Bluetooth modules from ..... |
I, too, have not worked with Zigbee/XBEE. I have worked with Bluetooth and ISM band radio modems.
And I agree that Bluetooth modules are easy to use. The Bluetooth dongles and embedded modules I worked with were made by Blue Radios. There is a bit of overhead in using Bluetooth if one wants simple point-to-point radio comms. For one thing, two devices must be paired before they will work together.
The Maxstream radio modems I worked with needed to be configured so the four or five modems assigned to network would recoginze each ohter and ignore RF from other nearby radio modems. Once configured, data packets would pass through these modems without the need for supervisory commands, e.g. AT commands. There are other considerations beyond the scope of this post.
Because I needed to look up a few things I thought, in the interests of clarity, I would explain that Zigbee is a non-proprietary name for a standard for radio modems defined under IEEE 802.15.4. XBEE is a proprietary name for a product designed to the same standard. And Maxtream, the developers of XBEE, was aquired by DIGI.
From: Wikipedia: http://en.wikipedia.org/wiki/ZigBee
"many engineers saw a need for self-organizing ad-hoc digital radio networks."
And: http://en.wikipedia.org/wiki/Comparison_of_wireless_data_standards
Thanks for this interesting thread and all contributions.
JVJ
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eng_ahmed22
Joined: 07 Jun 2005
Posts: 178
Helped: 13
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| 22 May 2008 14:31 Connecting two embedded systems using Bluetooth USB Dongle? |
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Thanks a lot for all of u 
I'll study these great ideas and chose the available one.
It will depend on the availability of modules here in my country.
many thanks to all of u
Ahmed
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dani
Joined: 08 Mar 2004
Posts: 171
Helped: 1
Location: UK
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| 09 Jun 2008 13:17 Re: Connecting two embedded systems using Bluetooth USB Dong |
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| TDK Blue2I serial blutooth kits, Can it be another solution.?
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jackyuan
Joined: 12 Jun 2008
Posts: 1
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| 12 Jun 2008 12:58 Connecting two embedded systems using Bluetooth USB Dongle? |
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| dear Ahmed www.jizhuo.com maybe help u!
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