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Has anyone used a Raspberry Pi to run Slow Scan Television

 

Hello, I am new tto this group and also hold the callsign VK2JCC. Just thinking has anyone used the Pi as a backbone for Slow Scan Televsion? I note Tncs have been so iguess it must be possible! Well of to start playing w
ith this cute little device to see what I can learn. 73's Colin
 

See if you find an sstv software that could be used on linux (compiled to
run on raspi) ... add soundcard dongle to the raspi ... and it "should" work

Dg9bfc

Sigi

-----Ursprüngliche Nachricht-----
Von: Raspberry_Pi_4-Ham_RADIO@... [mailto:Raspberry_Pi_4-
Ham_RADIO@...] Im Auftrag von Colin Christie
Gesendet: Samstag, 29. Juni 2013 08:50
An: Raspberry_Pi_4-Ham_RADIO@...
Betreff: [Raspberry_Pi_4-Ham_RADIO] Has anyone used a Raspberry Pi to run
Slow Scan Television



Hello, I am new tto this group and also hold the callsign VK2JCC. Just
thinking has anyone used the Pi as a backbone for Slow Scan Televsion? I
note Tncs have been so iguess it must be possible! Well of to start
playing w
ith this cute little device to see what I can learn. 73's Colin
Vincent
 

On 6/29/2013 4:23 PM, siegfried jackstien wrote:
See if you find an sstv software that could be used on linux
Try qsstv
It also works on windows.

--

Vincent Tompkins
I am NOT n2ohh - my station is.
 

QSSTV for Linux:

I believe that the most recent update was in 2012.

There is another Linux-friendly digital-sstv app but I don't
recall the name.

Vincent wrote:
On 6/29/2013 4:23 PM, siegfried jackstien wrote:
See if you find an sstv software that could be used on linux
Try qsstv
--

Thanks! & 73, KD4E.com

David Colburn - Nevils, Georgia USA

Search with: duckduckgo.com

Android for Hams: groups.yahoo.com/group/hamdroid
Creative Tech: groups.yahoo.com/group/ham-macguyver
Raspi Alternative: groups.yahoo.com/group/beagleboneblack/

Restored to design-spec at Heaven's gate 1Cor15:22
[email protected]
 

You can use the Raspberry Pi for transmitting SSTV without any additional hardware.
I made a SSTV camera based on PiFM.
Details can be found here:
http://www.instructables.com/id/Raspberry-Pi-security-Slow-Scan-Television-Camera/

(currently its an entry in the instructables raspberry pi contest. So when you like this project, please vote for it!)
 

Hi everyone.? I've been trying to get pisstv installed on my Pi.? When I enter 
gcc -lgd -lmagic -o pisstv pisstv.c, it comes back
?
/usr/bin/ld: /tmp/cco9lrR5.o: undefined reference to symbol 'sin@@GLIBC_2.4'

//lib/arm-linux-gnueabihf/libm.so.6: error adding symbols: DSO missing from command line
?collect2: ld returned 1 exit status

I'm obviously missing something, but I have no idea what.


?
 

Hi all. My last attempt didn't seem to post so I'll try again.? I've been trying to get the sstv from www.instructables to install. I get as far as 
gcc -lgd -lmagic -o pisstv pisstv.c and it comes back

/usr/bin/ld: /tmp/ccHqMKef.o: undefined reference to symbol 'sin@@GLIBC_2.4'
//lib/arm-linux-gnueabihf/libm.so.6: error adding symbols: DSO missing from command line
collect2: ld returned 1 exit status

What am I missing?
 

Interest in this subject I have a RPI with the pi camera. Please post your success so others can try it out.

73 Mathison Kj6dzb
David Hamill
 

ve7knl wrote:

When I enter

gcc -lgd -lmagic -o pisstv pisstv.c, it comes back

/usr/bin/ld: /tmp/cco9lrR5.o: undefined reference to symbol 'sin@@GLIBC_2.4'

//lib/arm-linux-gnueabihf/libm.so.6: error adding symbols: DSO missing from command line
collect2: ld returned 1 exit status

I'm obviously missing something, but I have no idea what.
This is a message from ld, the linker that forms part of the gcc compilation chain.
It's complaining that it can't find the symbol "sin". I assume this is the mathematical sine function.

The usual reason for this sort of error is that you haven't explicitly asked for the maths library to be linked in. It may seem odd, but C compilers don't usually include the maths library by default, even if the source code contains "#include <math.h>"!

Try adding -lm to the command line options and see if that cures the problem:

gcc -lm -lgd -lmagic -o pisstv pisstv.c

David
 

That did it.? Thanks David.
 

Hi Mathison.? I've been playing around with

Thanks to David's help, I have captured an image with the picam, transmitted it over 2m and captured it with mmsstv. There's still a ways to go before I'm ready to put it on the air but the test run so far looks good.
 

Here is another example. . ?

So what sort of things until its ready for AIR TIME??

Whats the real world transmission frame rate?

mathison




On Tue, Sep 2, 2014 at 8:22 AM, ve7knl@... [Raspberry_Pi_4-Ham_RADIO] <Raspberry_Pi_4-Ham_RADIO@...> wrote:
?

Hi Mathison.? I've been playing around with

Thanks to David's help, I have captured an image with the picam, transmitted it over 2m and captured it with mmsstv. There's still a ways to go before I'm ready to put it on the air but the test run so far looks good.
 

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It's working now.? It takes 2minutes 7 seconds from taking the picture to finishing transmission.? I still have to fiddle with the timing to straighten the picture out but that's not a big deal.


On 9/3/2014 11:07 AM, Mathison Ott mathisono@... [Raspberry_Pi_4-Ham_RADIO] wrote:

?
Here is another example. . ?

So what sort of things until its ready for AIR TIME??

Whats the real world transmission frame rate?

mathison




On Tue, Sep 2, 2014 at 8:22 AM, ve7knl@... [Raspberry_Pi_4-Ham_RADIO] <Raspberry_Pi_4-Ham_RADIO@...> wrote:
?

Hi Mathison.? I've been playing around with

Thanks to David's help, I have captured an image with the picam, transmitted it over 2m and captured it with mmsstv. There's still a ways to go before I'm ready to put it on the air but the test run so far looks good.
 

What is the image size in pixels?

From: "Clinton ve7knl@... [Raspberry_Pi_4-Ham_RADIO]"
To: Raspberry_Pi_4-Ham_RADIO@...
Sent: Wednesday, September 3, 2014 6:51 PM
Subject: Re: [Raspberry_Pi_4-Ham_RADIO] Re: Has anyone used a Raspberry Pi to run Slow Scan Television

?
It's working now.? It takes 2minutes 7 seconds from taking the picture to finishing transmission.? I still have to fiddle with the timing to straighten the picture out but that's not a big deal.


On 9/3/2014 11:07 AM, Mathison Ott mathisono@... [Raspberry_Pi_4-Ham_RADIO] wrote:


?
Here is another example. . ?

So what sort of things until its ready for AIR TIME??

Whats the real world transmission frame rate?

mathison




On Tue, Sep 2, 2014 at 8:22 AM, ve7knl@... [Raspberry_Pi_4-Ham_RADIO] <Raspberry_Pi_4-Ham_RADIO@...> wrote:
?
Hi Mathison.? I've been playing around with

Thanks to David's help, I have captured an image with the picam, transmitted it over 2m and captured it with mmsstv. There's still a ways to go before I'm ready to put it on the air but the test run so far looks good.
 

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320x256

On 9/4/2014 7:39 AM, Max Harper kg4pid@... [Raspberry_Pi_4-Ham_RADIO] wrote:

?
What is the image size in pixels?
 

Hi there,?
?
I've been running a Raspi 4 with QSSTV and a Signal link to a TS-50 for the past four days, testing it, and it's working FB. I also used it for the ISS event, and it worked fine, too. For the OS, I'm running Ubuntu 24.04 LTS.
Jason, WV3V

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