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RF Prop to Prop

BADHABITBADHABIT Posts: 138
edited 2009-07-30 05:17 in Propeller 1
Have any of you tried using anything like this for its UART capabilities or for simply transmitting data one way?


http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=42881

I just got a couple and am pretty excited about how simple it was to get two propellers talking across the house(from upstairs on one end to downstairs·at the other).

The only hard part was soldering wires to the SM pads. Actually, it was kinda fun.

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Post Edited (BADHABIT) : 7/28/2009 10:28:26 PM GMT
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Comments

  • Timothy D. SwieterTimothy D. Swieter Posts: 1,613
    edited 2009-07-28 23:43
    I haven't used that particular modules but I did some experiments with RF modules from Sparkfun that used the same chips - Nordic semiconductor.

    Excellent that you got the RF working. What is the project that you are using it for?

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    Timothy D. Swieter, E.I.
    www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, 3.0" LCD Composite video display, eProto for SunSPOT
    www.tdswieter.com
  • BADHABITBADHABIT Posts: 138
    edited 2009-07-29 03:01
    It's a machine to mgmt interface to let them know·up time, down time, parts made etcetera.

    The module has been the easy part. It's so simple it's ridiculous. I thought about using·the Nordic chip, but it was so quick and easy to use the module that I probably saved days, if not weeks of dev. time by just spending a few more bucks and having the work done for me.



    How hard was the Nordic chip to work with? what other pcs did you need?

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  • Timothy D. SwieterTimothy D. Swieter Posts: 1,613
    edited 2009-07-29 03:07
    I used boards from SparkFun for both Nordic and the 434MHz. www.sparkfun.com/commerce/categories.php?c=16. I think I grabbed some demo code from the forum or the object exchange. It was a couple years ago when I did my testing. I see there is an object in the obex: obex.parallax.com/objects/search/?q=nordic

    I agree with you, to save time and do some prototyping or small quantity use a module like you got or from Sparkfun. The module you have, is it a low level communication or direct to the IC?

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    Timothy D. Swieter, E.I.
    www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, 3.0" LCD Composite video display, eProto for SunSPOT
    www.tdswieter.com
  • Chad GeorgeChad George Posts: 138
    edited 2009-07-29 03:35
    that looks like an interesting product.

    9600 baud seems a little slow for a 2.4Ghz transceiver, but its a complete solution.

    I'm beginning to get the feeling that the 2.4Ghz band is getting rather crowded, so if their "bluetooth, zigbee, 802.11b/g" immunity claim holds up then it could definitely be a time saver for a lot of applications.

    Also the price range is very reasonable.

    I've used nordic on my own boards before and I believe they are about $8-10 in parts and around 1sq in of board space. Also it requires QFN soldering which I'm still not very good at so I generally avoid when possible.

    the sparkfun nordic modules are around $20. Xbee is $20-30. Bluetooth seems to be $30-50.

    so a complete module at $15 definitely seems worth looking at if 9600 baud is acceptable.

    Post Edited (Chad George) : 7/29/2009 3:40:16 AM GMT
  • BADHABITBADHABIT Posts: 138
    edited 2009-07-29 03:37
    It's 3 pins 9600 baud UART. So whatever you do on those 3 pins gets sent.

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  • RaymanRayman Posts: 14,844
    edited 2009-07-29 11:29
    That does look like a very nice module! It's a little strange the way you have to solder it though.
    I says it can tolerate WiFi, but I wonder if my WiFi wil tolerate it...

    I might have to pick up a few of those...

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    My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
  • Cluso99Cluso99 Posts: 18,069
    edited 2009-07-29 11:55
    Nice find smile.gif small 0.6x0.6" and cheap $15. Pitty it is only 9600 baud.

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    Links to other interesting threads:

    · Home of the MultiBladeProps: TriBladeProp, RamBlade, TwinBlade,·SixBlade, website
    · Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
    · Prop Tools under Development or Completed (Index)
    · Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80), MoCog (6809)
    · Search the Propeller forums (via Google)
    My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm
  • BADHABITBADHABIT Posts: 138
    edited 2009-07-30 04:59
    It's not that awful.

    My second modem was 4800 baud and by the time 9600 became obtainable I thought it was the fastest thing in the world.

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  • Timothy D. SwieterTimothy D. Swieter Posts: 1,613
    edited 2009-07-30 05:17
    All a matter of perspective I guess.

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    Timothy D. Swieter, E.I.
    www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, 3.0" LCD Composite video display, eProto for SunSPOT
    www.tdswieter.com
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