EMRFD Message Archive 8501
Message Date From Subject 8501 2013-04-10 22:22:30 Bob L DSP Experimentation Question
What should I look at?
AE9RB is selling the Peaberry SDR receiver kit for $149. It uses a Cypress unit with a TI PCM 3060 DSP chip.
EMRFD, which has been in print for 10 years, employed the "EZ-KIT" which has been replaced with a later demo board. These boards now start at $200 and run well over a thousand. I don't want that big of a financial commitment.
I've ten years experience programming PIC's so I'd like to experiment with the software development on the DSP side.
It appears the PCM 3060 has basic hardwired DSP capabilities that might be programmed with simple, and slow speed serial input. It also costs $5 through Mouser. Mouser also has about a dozen audio CODEC demo boards under $75.
Should I look at one of them?
Reviewing the offerings on the web, I haven't found anything that meets my intended experimental purposes. The Peaberry appears to be a good unit, but the DSP experimentation is already contained in the kit.
Bob, N7SUR8502 2013-04-10 23:25:14 Ashhar Farhan Re: DSP Experimentation Question
standard gnu tool chain to program with.
the low end raspberry pi costs 25 dollars, the usb adapters are available
for as low as two dollars on ebay.
- farhan
8503 2013-04-11 09:08:37 Tom Re: DSP Experimentation Question
You might want to check out < http://www.qsl.net/k5bcq/Kits/Kits.html > and scroll down to the "SDR2GO" kit. The kit is board to be used with Softrock or other Tayloe front ends to provide dsp and other functions without the need for a computer. You will find support for this product as well as source code at the Austin QRP Club Yahoo group. < http://groups.yahoo.com/group/AQRP/ >
Tom, ak2b
8504 2013-04-11 12:36:44 Edson - PY2SDR Re: DSP Experimentation Question
I have been looking at this device as a possible stand-alone SDR.
http://www.ti.com/tool/tmdx5505ezdsp
73,
-- Eds8513 2013-04-11 22:09:07 Bob L Re: DSP Experimentation Question
Tom, I'm building one of K5BCQ's Si 570 kits and I looked at his SDR2GO. My interest is learning about and developing DSP routines, not just loading prepared hex files into a DSP unit. I just joined the Yahoo AQRP group to see if I can learn more about his system.
I've spent some time getting to this point. I started looking at Ashhar's BITX, but then decided that phasing systems might be more challenging.
The DCM-3060 appears to be a hardwired DSP with limited capabilities. But these abilities can be activated using simple serial input codes.
In contrast, most DSP's appear to be a black box with analog to digital front ends and digital to analog back ends. The user writes the routines for the DSP procedures though some routines might be embedded as peripheral features. This is the process described in EMRFD, chapter 10.
I think I'll start with a simple process:
Yesterday, I got a VFO operational based on the ebay AD9850 board that goes for $6. An 8 bit PIC controls the frequency and displays it on an LCD. I'll combine this with a Tayloe front end and the DCM-3060. If the workload from the DCM is minimal it could also come under the PIC control. This could represent a simple DSP system.
-8514 2013-04-11 22:09:07 AD7ZU Re: DSP Experimentation Question
TI has some inexpensive 16bit DSP developent boards that include CODECs for very reasonable prices about $100.
there are several development boards based on the TI5535 or similar processors. An IDE is also available from TI I believe at no cost? but check. here is the link:
http://www.ti.com/tool/tmdx5535ezdsp
that development board contains everything needed to implement the backend of a "no pc" DSP based radio.
Randy
AD7ZU
________________________________
8515 2013-04-11 22:09:07 Stacy Williams Re: DSP Experimentation Question
Lately, I have been reading up on the Picastar builds and, the DSP board is
actually based around the original EZ and the DSP article from emrfd.
Perhaps, looking at the Picastar DSP board, then mod it to run with a
Tayloe front end! As you can, download the pcb layout and make the board
at home too. The PICs are very to aquire on fleabay.
In fact, I have been considering a future mod of the Picastar with a Tayloe
front end, pa3ake BPF with an S-mode filter. This type of front end seems
to be rather fashionable right now, or over the last few years or so.
However in my humble case, currently, this idea has only been for a future
upgrade should, I eventually finish my Combostar build.
Maybe, have a look at the Yahoo group or, I can rmail you the details if
your interested.
Regards & 73
m0wsa
Stacy Williams
Spooky action at a distance.......
On Apr 11, 2013 6:22 AM, "Bob L" <bobledoux@proaxis.com> wrote:
> **
>
>
> I'd like to experiment with a self contained receiver that uses a Tayloe
> front end followed by a DSP audio stage. No PC computer.
>
> What should I look at?
>
> AE9RB is selling the Peaberry SDR receiver kit for $149. It uses a Cypress
> unit with a TI PCM 3060 DSP chip.
>
> EMRFD, which has been in print for 10 years, employed the "EZ-KIT" which
> has been replaced with a later demo board. These boards now start at $200
> and run well over a thousand. I don't want that big of a financial
> commitment.
>
> I've ten years experience programming PIC's so I'd like to experiment with
> the software development on the DSP side.
>
> It appears the PCM 3060 has basic hardwired DSP capabilities that might be
> programmed with simple, and slow speed serial input. It also costs $5
> through Mouser. Mouser also has about a dozen audio CODEC demo boards under
> $75.
>
> Should I look at one of them?
>
> Reviewing the offerings on the web, I haven't found anything that meets my
> intended experimental purposes. The Peaberry appears to be a good unit, but
> the DSP experimentation is already contained in the kit.
>
> Bob, N7SUR
>
>
>
[Non-text portions of this message have been removed]8516 2013-04-11 22:09:07 AD7ZU Re: DSP Experimentation Question
here is the 5505 version with the CODEC:
http://www.ti.com/tool/tmdx5505ezdsp
Randy
AD7ZU
________________________________
8528 2013-04-12 07:48:56 c6alk Re: DSP Experimentation Question
Would it be at all possible for you to share any information at all on your PIC and ebay AD9850 board that goes for $6? I am working8530 2013-04-12 17:07:36 Bob L Re: DSP Experimentation Question
Its programmed in PIC assembler. Most modern software is written in C which provides good math library support. I've never learned C because of all the &!8535 2013-04-15 00:15:46 Vaclav Peroutka Re: DSP Experimentation Question
Cheap_dsp/Cheap_dsp.htm
Vaclav
---------- Původní zpráva ----------
Od: Bob L <bobledoux@proaxis.com>
Datum: 11. 4. 2013
Předmět: [emrfd] DSP Experimentation Question
"
I'd like to experiment with a self contained receiver that uses a Tayloe
front end followed by a DSP audio stage. No PC computer.
What should I look at?
AE9RB is selling the Peaberry SDR receiver kit for $149. It uses a Cypress
unit with a TI PCM 3060 DSP chip.
EMRFD, which has been in print for 10 years, employed the "EZ-KIT" which has
been replaced with a later demo board. These boards now start at $200 and
run well over a thousand. I don't want that big of a financial commitment.
I've ten years experience programming PIC's so I'd like to experiment with
the software development on the DSP side.
It appears the PCM 3060 has basic hardwired DSP capabilities that might be
programmed with simple, and slow speed serial input. It also costs $5
through Mouser. Mouser also has about a dozen audio CODEC demo boards under
$75.
Should I look at one of them?
Reviewing the offerings on the web, I haven't found anything that meets my
intended experimental purposes. The Peaberry appears to be a good unit, but
the DSP experimentation is already contained in the kit.
Bob, N7SUR
"=
[Non-text portions of this message have been removed]