SINUS RDS PROJECT

Everything technical about radio can be discussed here, whether it's transmitting or receiving. Guides, charts, diagrams, etc. are all welcome.
Post Reply
User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

SINUS RDS PROJECT

Post by sinus trouble » Sat Nov 28, 2020 11:59 pm

Hello Necks :)

I Promised I would share this so here it is! Please bear with me cos the software side is a little complicated.

Anyways a bit about the project, The design and build of the PCB is mine and based on a software created by JJ Goessens so credit goes to the author.

The RDS supports RT, PI and scrolling TEXT all programmable via PC RS-232

Note; Just a warning! I have found this is not compatible with USB/Serial based setups but i am working on it!
20200829_185315.jpg
Sinus RDS.png
You do not have the required permissions to view the files attached to this post.
I am as stupid as I look! :|

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Sun Nov 29, 2020 12:00 am

Sinus RDS.png
You do not have the required permissions to view the files attached to this post.
I am as stupid as I look! :|

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Sun Nov 29, 2020 12:17 am

RS-232 Connection.
20200901_173532.jpg
You do not have the required permissions to view the files attached to this post.
I am as stupid as I look! :|

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Sun Nov 29, 2020 1:14 am

RDS Test!
20200830_191951.jpg
You do not have the required permissions to view the files attached to this post.
I am as stupid as I look! :|

radium98
proppa neck!
proppa neck!
Posts: 907
Joined: Fri Aug 26, 2016 7:01 pm

Re: SINUS RDS PROJECT

Post by radium98 » Sun Nov 29, 2020 8:18 am

1 word .wonderful work .

radium98
proppa neck!
proppa neck!
Posts: 907
Joined: Fri Aug 26, 2016 7:01 pm

Re: SINUS RDS PROJECT

Post by radium98 » Sun Nov 29, 2020 11:39 am

Sinus what is that beautiful decoder with 16x2 lcd ?
btw adding a decoder from the output of the encoder and you can have a full rds with lcd ,that what i did before .Mine have only ps and i can write 15 characters like the vincent i add him a decoder ,so it is full version ,yes this one is pretty good with scrolling etc..and ct .buti would like to find a di y solution if it can to an adapter usb to 232 ,i have one but it did not work ,so why i would like to try a diy one

LeeCavanagh
tower block dreamin
tower block dreamin
Posts: 349
Joined: Sat Feb 18, 2017 5:56 pm

Re: SINUS RDS PROJECT

Post by LeeCavanagh » Sun Nov 29, 2020 10:04 pm

Well done, congrats, nice and simple, thanks for the share
Sony ST 920 QS

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Sun Nov 29, 2020 11:47 pm

radium98 wrote: Sun Nov 29, 2020 8:18 am 1 word .wonderful work .
Thank you Mr Radium! :)
I am as stupid as I look! :|

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Sun Nov 29, 2020 11:50 pm

radium98 wrote: Sun Nov 29, 2020 11:39 am Sinus what is that beautiful decoder with 16x2 lcd ?
Haha! Its not quite as Beautiful as it looks, Actually a £10 portable radio from Tesco! I guess it does the job.
I am as stupid as I look! :|

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Mon Nov 30, 2020 12:03 am

radium98 wrote: Sun Nov 29, 2020 11:39 am i would like to find a di y solution if it can to an adapter usb to 232 ,i have one but it did not work ,so why i would like to try a diy one
I dont know what the problem is with those USB/Serial adaptors? I have an old PIC programmer which also was not compatible? Possibly a driver issue?? when i analysed the serial on an Oscilloscope there was quite a large voltage swing in the data? Im still not sure if this is a problem?

However there is hope! Most PC motherboards do have a hidden Pin header available to add serial, Which is the option i took! Check the datasheet of your motherboard for location and Pinout.
Last edited by sinus trouble on Mon Nov 30, 2020 12:26 am, edited 1 time in total.
I am as stupid as I look! :|

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Mon Nov 30, 2020 12:25 am

LeeCavanagh wrote: Sun Nov 29, 2020 10:04 pm Well done, congrats, nice and simple, thanks for the share
Thank you Mr Cavanagh! :)

I decided not to add sockets to the PCB as this limits the versatility! I like to hardwire the unit depending on the application.

I will upload the HEX file soon, The control software will probably be Via PM download?
I am as stupid as I look! :|

radium98
proppa neck!
proppa neck!
Posts: 907
Joined: Fri Aug 26, 2016 7:01 pm

Re: SINUS RDS PROJECT

Post by radium98 » Mon Nov 30, 2020 6:42 am

I will upload the HEX file soon, The control software will probably be Via PM download?
yep thanks .Let me in .

User avatar
OldskoolPirate
no manz can test innit
no manz can test innit
Posts: 208
Joined: Thu Feb 18, 2016 9:32 pm

Re: SINUS RDS PROJECT

Post by OldskoolPirate » Tue Dec 01, 2020 10:54 am

I’ll have a go at this if you could send over the hex and software sinus ?
:tup

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Wed Dec 02, 2020 12:00 am

No worries! :)

PM me and i will send the Software.
I am as stupid as I look! :|

Albert H
proppa neck!
proppa neck!
Posts: 2737
Joined: Tue Apr 05, 2016 1:23 am

Re: SINUS RDS PROJECT

Post by Albert H » Sun Dec 06, 2020 2:31 pm

Working on it....
RDS_Proto.jpg
This is a similar RDS design, though somewhat simplified, using a 16F88. I've been messing with the code (I'm on Version 0.74 at the moment) and trying to get pilot synchronisation to work. It has proven to be tricky.

There's another Veroboard build on the bench at the moment, that uses a 74HC4046 and a 74HC4040 to derive 4.332MHz from the 19kHz pilot from the stereo coder. The '4040 is programmed to divide by 228, and the '4046 VCO is dimensioned for a small range around 4.3MHz. This might be a good way to add synchronisation to the basic RDS circuit that's been presented further up this thread. You take the 19 kHz from the stereo coder logic, and use it as the "reference" input to the '4046. The VCO is divided by 228 and compared with the 19 kHz, so that the VCO is phase-locked to the pilot at 4.332 MHz. It just takes two cheap chips, a handful of diodes and a few passives.....
You do not have the required permissions to view the files attached to this post.
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

User avatar
sinus trouble
proppa neck!
proppa neck!
Posts: 1410
Joined: Fri Aug 22, 2014 11:34 pm

Re: SINUS RDS PROJECT

Post by sinus trouble » Sun Dec 06, 2020 9:47 pm

Nice Albert! :)

I have also pondered on the idea of sync between RDS and STEREO ? As with the Pro 3 coder,the crystal values are so close, just not enough? I like your thinking on the theory Albert!

Another possibility could be to use the 57Khz as the reference then maybe divide that to reach the 19Khz?

Infact i have never probed the unused pins of the PIC?? Its unlikely but possible that the Author of the code included such a reference??

Im also hoping to fire some test TEXT into the PCB via USB vs SERIAL and capture some results on the scope to display here.
I am as stupid as I look! :|

Albert H
proppa neck!
proppa neck!
Posts: 2737
Joined: Tue Apr 05, 2016 1:23 am

Re: SINUS RDS PROJECT

Post by Albert H » Mon Dec 07, 2020 5:35 pm

Looking at the PIC code for the 16F628A (RDS1.hex), there doesn't seem to be any spare outputs. It really would be nice to derive 38kHz and 19 kHz in phase synchronism from the 4.332 MHz rock, but there doesn't seem to be enough room on the little PIC for that.....

I'm going to experiment with the 19kHz-driven PLL.
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

radium98
proppa neck!
proppa neck!
Posts: 907
Joined: Fri Aug 26, 2016 7:01 pm

Re: SINUS RDS PROJECT

Post by radium98 » Mon Dec 07, 2020 7:58 pm

Albert H do you still searching for the mini Rds ? Pira

radium98
proppa neck!
proppa neck!
Posts: 907
Joined: Fri Aug 26, 2016 7:01 pm

Re: SINUS RDS PROJECT

Post by radium98 » Mon Dec 07, 2020 7:59 pm

Im also hoping to fire some test TEXT into the PCB via USB vs SERIAL and capture some results on the scope to display here. Nice Sinus.

radium98
proppa neck!
proppa neck!
Posts: 907
Joined: Fri Aug 26, 2016 7:01 pm

Re: SINUS RDS PROJECT

Post by radium98 » Mon Dec 07, 2020 8:39 pm

1.png
@Sinus it can be this also .
You do not have the required permissions to view the files attached to this post.

Post Reply