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Re: DSPic FORTH

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On 1/10/2013 7:53 PM, donseglio@gmail.com wrote:
>
> I already said that I had already implemented a lot of the project on an ST M4 Cortex processor using a ST Discovery M4 card which I will finish.
>
> http://www.mouser.com/ProductDetail/STMicroelectronics/STM32F4DISCOVERY/?qs=sGAEpiMZZMutVogd4PRSvEN8XDBeCtgD
>
>   The reason I'm interested in a DSPic version is that those chips are available in DIP and SOIC packaging which are more easy for me to work with. I want to create a PCB with not just the CPU but also all the special IO required to connect and control the transceiver, with DIP or SOIC devices it is easier to create a PCB and for others to use.
>
> Computers create noise, so having a CPU on one board and I/O on another with all the wiring involved inside a radio is a very bad idea. You want a single board to do it all because its easier to shield one board.
>
> This is a hobby for me, so I also want to work with those chips because they are interesting and easy to work with.
>
> Cecil - k5nwa

Hi Cecil,

I think you overrate the problems created by multiple boards in a radio. 
  I worked for Thales which make handheld radios for the military and 
emergency services.  They don't make a radio with a single board in it. 
  They are all modular.

Of course the project is yours and you can set the requirements to suit 
yourself.  I don't know of any of the CM4 devices that aren't available 
in QFP and/or QFN type packaging which is pretty easy to work with.  I 
don't like to use fine pitch BGAs in my professional work and my 
assembly house tells me LGA modules are a PITA.  But I love QFPs and QFNs.

BTW, emitted noise in electronic circuits have specific causes.  Just 
running wires isn't one of them.  Running wires that act like antennas 
is what emits noise.

Rick

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DSPic FORTH donseglio@gmail.com - 2013-01-09 09:51 -0800
  Re: DSPic FORTH Brad Eckert <hwfwguy@gmail.com> - 2013-01-09 11:53 -0800
    Re: DSPic FORTH donseglio@gmail.com - 2013-01-09 12:11 -0800
      Re: DSPic FORTH Mikael Nordman <oh2aun@invalid.com> - 2013-01-09 22:46 +0200
        Re: DSPic FORTH Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2013-01-24 15:57 +0100
  Re: DSPic FORTH stephenXXX@mpeforth.com (Stephen Pelc) - 2013-01-09 20:22 +0000
    Re: DSPic FORTH Brad Eckert <hwfwguy@gmail.com> - 2013-01-10 09:39 -0800
  Re: DSPic FORTH Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-01-09 14:09 -0800
    Re: DSPic FORTH donseglio@gmail.com - 2013-01-09 14:53 -0800
      Re: DSPic FORTH Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-01-09 18:54 -0800
        Re: DSPic FORTH donseglio@gmail.com - 2013-01-09 20:48 -0800
          Re: DSPic FORTH rickman <gnuarm@gmail.com> - 2013-01-10 17:35 -0500
            Re: DSPic FORTH donseglio@gmail.com - 2013-01-10 16:53 -0800
              Re: DSPic FORTH rickman <gnuarm@gmail.com> - 2013-01-13 17:22 -0500
          Re: DSPic FORTH Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-01-10 20:59 -0800
            Re: DSPic FORTH rickman <gnuarm@gmail.com> - 2013-01-13 17:25 -0500
              Re: DSPic FORTH Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-01-14 13:45 -0800
                Re: DSPic FORTH rickman <gnuarm@gmail.com> - 2013-01-14 17:09 -0500
                Re: DSPic FORTH Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-01-14 15:27 -0800
                Re: DSPic FORTH rickman <gnuarm@gmail.com> - 2013-01-15 00:20 -0500
                Re: DSPic FORTH Brad Eckert <hwfwguy@gmail.com> - 2013-01-17 07:39 -0800

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