Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Mar Tue 31, 2020 8:56 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 13 posts ] 
Author Message
 Post subject: Anyone here used an arduino and/or raspberry pi for a radio?
PostPosted: Jun Sun 23, 2019 1:18 pm 
Member

Joined: Apr Sat 27, 2019 3:30 am
Posts: 61
Ok, so long story short, for awhile I've been wanting to create a homemade radio using a raspberry pi computer. Problem is, I've never attempted anything like this before. Most of my experience with electronics has just been things like changing capacitors, soldering new batteries on game cartridges,basically just general repair and basic cleanup. This would require not only building a working radio circuit, but programming as well. Neither of which I've truly attempted. I was wanting to create a multiband radio that could be internet and bluetooth capable on top of still receiving analog signals if possible(hence the arduino)


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Sun 23, 2019 3:56 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 4333
Sounds like a fun project. Why not take it on and post your results? Start by googling Raspberry Pi radio and Arduino radio.


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Mon 24, 2019 1:38 pm 
Member

Joined: Sep Wed 18, 2013 7:18 pm
Posts: 147
Location: 50266
Sparkfun used to sell a Arduino shield for the si4735 (chip info at https://www.silabs.com/products/audio-and-radio/multi-band-radios/si4734-35-radio-receivers), but it never worked properly. Ponoko has a breakout board for the chip (https://www.ponoko.com/make-and-sell/show-hardware/2707-a-si4735-fm-am-radio-receiver-breakout?source_node=ponoko_united_states), but I've never used it.

I've used an AM/FM only breakout board with a Netduino and had good results.

Good luck!


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Mon 24, 2019 2:30 pm 
Member

Joined: Sep Wed 18, 2013 7:18 pm
Posts: 147
Location: 50266
Alas! Apparently the si4735 chip has been discontinued. Sorry!

If you could settle for FM only, the si4703 looks to still be available. Or if you're a surface mount kind of person (I'm not!), you could find an old-stock si4735 and roll your own.


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Tue 25, 2019 4:01 am 
Member

Joined: Apr Sat 27, 2019 3:30 am
Posts: 61
:? figures the simplest solution would be discontinued.


I really wanted something more than just FM. I've never really messed with any surface mount stuff yet, though that might be my best option is to get one of the chips themselves and see if I could make them work...


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Tue 25, 2019 5:47 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2385
Location: Saskatoon
I've been thinking along these lines too. I would go with the SiLabs Si4734. It's AM/FM/SW/LW. This is the chip used in the Tecsun PL380 portable receiver. It requires very few external parts to make it work, but does need some kind of microcontroller interfaced to it to operate it. As far as I know, there's no Arduino shield available with this chip. You would have to get the bare chip and mount it yourself.


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Tue 25, 2019 1:36 pm 
Member

Joined: Nov Wed 17, 2010 11:14 pm
Posts: 193
My brother in law took the Arduino and wrote a program at my request to convert BCD thumb wheel switches to create a serial bit stream with data, clock and data latch. This stream from the little micro talked directly to any of the programmable PLL chips. Now I had a PLL VCO that is used for LO injection to an analog mixer. Viola, a radio. If this mixer output were to be baseband then you could consider doing signal processing in the micro for demodulation.

Alan


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Tue 25, 2019 5:35 pm 
Member

Joined: Sep Wed 18, 2013 7:18 pm
Posts: 147
Location: 50266
I just stumbled across the KT0915 AM/FM/LW/SW chip, which looks interesting.

Some links:

http://aitendo3.sakura.ne.jp/aitendo_data/product_img/ic/radio/KT0915%20/KT0915_datasheet_V022_aitendo.pdf
https://hackaday.io/project/12944-radio-yes-am-sw-fm-radio-by-dsp-radio-chip
https://www.tindie.com/products/microwavemont/dsp-radio-version-4/
http://play.fallows.ca/wp/radio/software-defined-radio/arduino-single-chip-radio-connect-control/


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Tue 25, 2019 11:00 pm 
Member

Joined: Apr Sat 27, 2019 3:30 am
Posts: 61
Avictor

anyway you could post a video of it working?

Certainly good suggestions so far.


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Wed 26, 2019 12:36 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2385
Location: Saskatoon
htolino wrote:
I just stumbled across the KT0915 AM/FM/LW/SW chip, which looks interesting.

Do you know of a source for these chips? I've found that there are a number of AM/FM radio chips from Asian semiconductor manufacturers, but they are impossible to obtain in North America. It would be nice to find a reliable source for them. Even the radio chips that Philips manufactures are hard to get. SiLabs seems to be the only company that has readily accessible supplies here.

Vlad Novichkov who sometimes posts on this forum (user name Vladn) has designed and built a pocket sized DSP AM/SW receiver that uses a Teensy 3.1 Cortex-M4 Arduino-compatible board as the controller, and a SiLabs Si5338 chip as the local oscillator. He posted the details on the Radioboard:
http://theradioboard.com/rb/viewtopic.php?f=4&t=6641
This is significantly more ambitious than a single chip receiver style radio, but it shows what can be accomplished.

I've also programmed some Arduino compatible controllers as well as PIC microprocessors. Here's a PIC based project that controls an AD9850/51 DDS frequency reference with 1Hz resolution.
http://electronbunker.ca/eb/DDS_Controller1.html


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Wed 26, 2019 12:48 am 
Member
User avatar

Joined: Mar Sun 11, 2007 6:55 am
Posts: 11574
Location: Mission Viejo, southern California
You can buy complete AM, FM, SW radio kits for very little. For example:
https://www.banggood.com/DIY-EDT-2902-M ... rehouse=CN

_________________
many of my radios http://s269.photobucket.com/user/FSteph ... t=3&page=1


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Thu 27, 2019 3:03 am 
Member

Joined: Apr Sat 27, 2019 3:30 am
Posts: 61
I mean yeah technically I could, but the issue with that is it is strictly using the parts they send you..

I already technically have a Shortwave radio (near perfect condition realistic patrolman SW-60) but this would be more for my own learning experience. That and it can be more versatile this way, That's partly why I also want to somehow make the Raspberry pit work with it as well. I can get internet radio stations, bluetooth connectivity, etc.


With all that said....

So one thing I was planning on doing was sacrificing another radio that I have for this project. I have a GE 7-4950 clock radio that I got specifically cuz I felt it would work for this purpose(and I liked the looks of it). It's really spacious inside the case, so I could easily get the pi and arduino inside it. Aside from stuff like the speaker or potentiometers, can I use anything else from this radio here? Sorry if it's a bit of a dumb question, but I figure it doesn't hurt to ask....


Top
 Profile  
 
 Post subject: Re: Anyone here used an arduino and/or raspberry pi for a ra
PostPosted: Jun Thu 27, 2019 10:57 am 
New Member

Joined: Apr Sat 22, 2017 8:04 pm
Posts: 8
We have a project in my portfolio called “radio data mining”
The techs use a raspberry Pi with two SDR dongles each to “mine” two stations at the same time.
I think they use a basic SDR USB dongle that you could buy in Amazon or Ebay; the Pi only handles the routines and processes the digital voice.
Best


Top
 Profile  
 
Post New Topic Post Reply  [ 13 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 7 guests



Search for:
Jump to:  
































-->


Privacy Policy :: Powered by phpBB