Have an idea? Post it here! - Looking for developers? Ask here as well!
#6988 by ted051
Sat Jan 07, 2017 6:37 pm
Hi all, happy New Year!
Some month's ago I began to develop a stand- alone Transceiver, with Pavel's assistance. It is based on a STM32F7Discovery board and got the name "DiscoRedTRX". It has a touchscreen, works pretty well, but has no realtime spectrum display.
That's the reason, because I now try to build the "big brother" of this project, with a Raspberry Pi3B as controller. The software for the Raspi comes from John Melton (G0ORX/N6LYT) and has the name "PiHPSDR). The audio codec WM8731 works, and I hope to have it run in a couple of weeks.
To solve is the connection and control of my PE4306 attenuator. My currently plan is, to make an extra program for this reason. EBay-link to the attenuator board:
Link to the DiscoRedTRX article:
#7144 by take
Tue Feb 07, 2017 9:05 am
Hi Rick,

Thank you for interesting my TS-680SDR project.

I have worked more than 170 contacts from 160m to 6m with CW, SSB and Digtal modes with my new toy. I am really impressed that Kenwood did splendid works in 1980s and these products can be reusable with new technology like Redpitaya today. I hope somebody will try it with their rigs sitting on their desk with dust.

I am planning to control my TS-680SDR via CAT, not via RedPitaya Conectors and hopefully control PowerSDR from TS-680SDR front panel but it will be a long time project as I am busy enough to enjoy QSO with current set-up. I hope I can hear such reports from somebody soon.

See you on the air.





Hello Take!

Thank-you for sharing your project, I look forward to hearing more
and trying something like it myself!

Best 73's,

-Rick / N1GP
#7145 by tony1tf
Tue Feb 07, 2017 10:31 am
Hi Wolfgang and Pavel

I have been to several of the STMicro free events, and therefore have an STMicro Discovery F7 evaluation board, and the links to the new open source ecosystem. I also have a Redpitaya currently running Pavel's WSPR code (see received spots from G3OVH on WSPRnet). I would love to combine the two as in your DiscoRedtrx project, however I am struggling for a simple guide. At the moment, I am unable to disentangle STMicro code from the Redpitaya code on Github, having been following links back and forth for some time. Perhaps at the moment, you havnt released the STMicro code, Wolfgang, or at least I havn't been able to find it?
Any help would be much appreciated so I can contribute to this project.
#7146 by pavel
Tue Feb 07, 2017 12:04 pm
Hi Tony,

The code that Wolfgang develops for the STMicro Discovery F7 board can be found at the following link:
https://github.com/pavel-demin/DiscoRed ... /master/ui

It can be built using the GNU ARM Embedded Toolchain:
https://developer.arm.com/open-source/g ... ain/gnu-rm
https://launchpad.net/~team-gcc-arm-emb ... ubuntu/ppa

Here is a pre-built binary:
https://www.dropbox.com/sh/5fy49wae6xwx ... X.bin?dl=1

Red Pitaya should be booted with this SD card image:
https://www.dropbox.com/sh/5fy49wae6xwx ... 8.zip?dl=1

The remaining software can be installed in the following two steps:

  1. enlarge the SD card partition:

    Code: Select allecho -e "d\n2\nw" | fdisk /dev/mmcblk0
    parted -s /dev/mmcblk0 mkpart primary ext4 16MB 100%
    resize2fs /dev/mmcblk0p2

  2. follow the instructions from the README file:

Best regards,

#7147 by tony1tf
Tue Feb 07, 2017 6:20 pm
Thanks Pavel

Great instructions as usual :)
I know everyone probably asks you this, but is the gnu-radio img code stand-alone - or can I combine it with other Red Pitaya instruments (such as the WSPR code)? Should everything be on separate SD cards?

best regards
#7148 by pavel
Tue Feb 07, 2017 9:39 pm
tony1tf wrote:... is the gnu-radio img code stand-alone - or can I combine it with other Red Pitaya instruments (such as the WSPR code)? Should everything be on separate SD cards?

Most of my application that can be easily combined with the Red Pitaya ecosystem are already available from the application marketplace.

A couple of my applications like the WSPR and embedded transceivers require additional packages and settings that aren't installed on the SD card images provided by Red Pitaya. For these applications, I provide pre-built SD card images with all the required packages and settings.

Since all the source codes, building scripts and some instructions are provided, it's of course possible to make various combinations of the SD cards images, system settings, packages and pre-installed applications.

Here is an approximate list of steps needed to install these applications on the SD card images provided by Red Pitaya:
  • install missing packages
  • build the applications from the sources
  • build the FPGA configuration bitstream from the sources
  • configure the FPGA
  • start the application

The first two steps would probably require a few iterations.
#7153 by ted051
Wed Feb 08, 2017 5:29 pm
Hello Tony,
thanks for your interest! The software for the STM32F7Disco board is in constant development. In the moment I am working on a CW keyer for the touchscreen, which shall work like an Iambic keyer.
If you are interested in the latest versions, please give me your email address.
For the STM32 development I use Eclipse, in the version "System workbench for stm32". It can be found here: http://www.openstm32.org/HomePage
And I use a modified library from Uwe Becker,
Here a screenshot of the keyer:
Best regards,
#7250 by F6bzg
Thu Mar 02, 2017 2:17 pm
Hello Pavel,
Hello Everybody,

Many thanks for the hard work which give us so good SDR apps.

I'm the sysop of a dual band websdr (F4KJI.fr) and i would like to upgrade this webstation with a Redpitaya (RP).
It would allow to increase the bandwith of each receiver.
I read some info: the bandwith depends on the PC side applications (see previous messages).
However, I would like to know if each receiver has its own antenna or do they need to share the same antenna?
All we need is :
- one receiver with a 500 Khz bandwith and one antenna,
- one or more receiver with a 48 KHz bandwith and its own antenna (miniwhip).

It would be great to use GNU radio as PC side application.

Thanks for all info about this project.

Best regards


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