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by Holden
Fri Dec 22, 2017 3:05 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Hee, I tried using your application for my project, but I am still learning a lot about Linux and RPi. One thing I couldn't figure out is this step: - Configure libopus with ./configure --enable-fixed-point to select the fixed-point implementation and enable the assembly optimizations. Since i can'...
by Holden
Sat Nov 04, 2017 10:41 am
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Wow, I guess I didn't get notified of your response. Sorry about that. How would I check for other audio processes? And yes, it does support full-duplex. When I set it up initially, Using their wiki page here: http://wiki.seeed.cc/ReSpeaker_2_Mics_Pi_HAT/ , it tested fine. Hi, have you made any pro...
by Holden
Thu Oct 05, 2017 9:46 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Thank you for the replay. Here are the results: cat /proc/asound/pcm 00-00: bcm2835 ALSA : bcm2835 ALSA : playback 8 00-01: bcm2835 ALSA : bcm2835 IEC958/HDMI : playback 1 01-00: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 : : playback 1 : capture 1 aplay -l **** List of PLAYBACK Hardware Devices **** ca...
by Holden
Thu Oct 05, 2017 9:35 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Is there any way to run seren in the back and free up the command line? Are you still working on new versions? Hi, the best way to run Seren in background is by launching it inside a screen session and then pressing "Ctrl-a d" to detach the screen and return to the terminal. I am still working on i...
by Holden
Wed Oct 04, 2017 6:11 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

I'm trying Seren out, trying to use ReSpeaker2 as both the capture and playback, on both a RPi3 and RPi2. So far, I've only gotten it to work by setting the ReSpeaker2 mics to capture (RPi2), and setting playback through headphones (RPi3). I get a "Cannot set parameters (Device or resource busy)" m...
by Holden
Sun Aug 13, 2017 3:47 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

konsti1337 wrote:
Sun Aug 13, 2017 3:39 pm
Actually I managed to solve this problem by just installing a dummy sound card

Thanks for letting me know, I'll try it when I have some time!
by Holden
Sun Aug 13, 2017 1:52 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

konsti1337 wrote:
Tue Aug 08, 2017 11:35 am
Is there any way to run seren without having an audio input / output installed. as a server so to say?

No, at the moment Seren requires an audio card with a working alsa driver to run.
by Holden
Tue Dec 09, 2014 10:18 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Is there any way to use seren with the microphone on the webcam? Of course. Firstly check if your webcam microphone has been detected: $ cat /proc/asound/pcm 00-00: ALC892 Analog : ALC892 Analog : playback 1 : capture 1 00-01: ALC892 Digital : ALC892 Digital : playback 1 00-02: ALC892 Analog : ALC8...
by Holden
Tue Dec 09, 2014 10:06 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Hi, right now I am looking for some software to build a intercom for a friend and me for motorcycle tours. Mumble is quite heavy on the cpu and teamspeak is not open source and wont run suffiently when emulated. I think we will try to check out how many people can talk until it gets laggy. I've tes...
by Holden
Mon Aug 04, 2014 9:58 am
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Hello there, for those of you still interested my voice conference program has changed name and it is now called Seren: http://holdenc.altervista.org/seren/ It has been optimized to work well on the Raspberry Pi and it has some nice features, such as: * audio conference with up to 10 people * simple...
by Holden
Fri Nov 01, 2013 9:06 am
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Looking at the site I notice that it generates a text based display of call status etc. Do you see any issues with running it at on headless PI? You could connect via ssh and use screen to run it on a headless PI. Basically I intend to use it as a wifi-based radio with only a small lcd screen to di...
by Holden
Fri Oct 25, 2013 9:34 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Is there any chance I will be able to use this for a conference-type chat with more than one person? Actually, after my first experience with parole I started writing a new version that supported conferences (up to ten people). This is why I haven't update parole in a while. Here's the link if you ...
by Holden
Fri Oct 18, 2013 4:42 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

What USB sound card do you recommend for this use? Or it it irrelevant? Hi, my program uses ALSA to access the sound card, so basically any usb sound card which has a working ALSA driver in linux should work. I've got this very cheap one from ebay, and it works out of the box on raspbian: http://ww...
by Holden
Thu May 09, 2013 3:18 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

My question is: I am a teacher and have lots of interest in including RPP-TLC software and hardware in the activities that I do. Also, I like to be able to sell RPP Hardware Kits for the people I will be teaching, because they can make a very interesting companion for Moleculines (the Project I am ...
by Holden
Thu May 09, 2013 3:07 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

Re: New cli voice chat application, testers needed!

Hi Holden, I am looking for a CLi based VoIP SIP client to run on the Pi, although I do need it to be able to register with a server/registrar. Hi Chris, I've only read something about the SIP protocol, but I've not yet experimented with it so far, so I'm afraid I can't be of much help. A quick sea...
by Holden
Wed Mar 27, 2013 9:23 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

I am currently trying to see if I can find anyone in my city to help me learn electronics - as I realised asking HW help on forums is not as easy as Software stuff. I will post back if I successfully identify ( with someone local's help) what I have been doing wrong. I'm sure working with a friend ...
by Holden
Wed Mar 20, 2013 12:42 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

Hello all, I'm very happy to see that many of you are using/studying rpp and finding it useful, after all this was the spirit of the project: a not-too-complicated programmer that people could study and hack on easily. As I said earlier I don't have much free time to work on it right now, but I'm su...
by Holden
Sun Mar 10, 2013 2:43 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

Hi, I am trying to see if I can program a PIC16F628a based on your circuit and software. I think I have wired up everything correctly. I added 4 led's( each with a 1KOhm resistor) for debugging: 3 green led's in parallel with the Clock, Data, and VPP, and 1 yellow led in parallel with the T3/Gpio8 ...
by Holden
Sun Mar 10, 2013 2:31 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

In the meantime - because I'm quite often using PIC12F629/675 - will it be possible for you to add support for those PICs into rpp, please? I have found Memory Programming datasheet at Microchip website: http://ww1.microchip.com/downloads/en/devicedoc/41191d.pdf But 629/675 programming is a bit com...
by Holden
Tue Feb 19, 2013 12:44 pm
Forum: Graphics, sound and multimedia
Topic: New cli voice chat application, testers needed!
Replies: 30
Views: 10248

New cli voice chat application, testers needed!

Hi guys, I've written a small cli voip program to make voice calls between two raspberrypi's (or two linux boxes in general). The application is called 'parole' (which is and italian word that means 'words') and I decided to write it some time ago, after I noticed there wasn't (or at least I did not...
by Holden
Sat Feb 16, 2013 4:04 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

Hi, do you think it is possible to use your method with the 16F688? It should be possible, yes. Try to build the hardware interface for the programmer, and the run: sudo ./rpp You should at least be able to read the device_id. I want to ask for help here, still have trouble to find 2 numbers (param...
by Holden
Fri Oct 12, 2012 4:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

It is quite surely a electronic noob question but why does the level switching (3.6V to 5V) have to be "so complicated"? I did some testing with the attached circuit using LTspice and the results looked good. Is the only problem using my circuit the invertion of the levels (0V => 5V and 3.6V => 0V)...
by Holden
Sun Aug 26, 2012 7:44 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi, Chua Circuit and Chaos
Replies: 2
Views: 851

Re: Raspberry Pi, Chua Circuit and Chaos

Thanks for posting that. Most impressive scope traces, I have bookmarked the page and might try an do something with this one day. You're welcome. Some days ago hackaday published an article on my work (link http://hackaday.com/2012/08/24/generating-truly-random-sequences/ ) and some people in the ...
by Holden
Thu Aug 23, 2012 1:59 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi, Chua Circuit and Chaos
Replies: 2
Views: 851

Raspberry Pi, Chua Circuit and Chaos

Hello,

I have used a Raspberry Pi to acquire random bit sequences coming from a Chua Circuit (which is the simplest electronic circuit exhibiting chaos). Maybe someone with a passion for electronics will be interested on reading my notes, so here it is: http://holdenc.altervista.org/chua/
by Holden
Sun Aug 19, 2012 11:09 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Raspberry Pi PIC Programmer using GPIO
Replies: 102
Views: 34613

Re: Raspberry Pi PIC Programmer using GPIO

Hi, I recently programmed an Pic24f with Rpi via the additional help from my Little Wire project. Hello, I gave it a read, interesting stuff... I've never worked with the 24f family myself though. I'm sure people will find it useful. Ok, I have updated my page with an explanation of how the hardwar...

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