Re: [RDD] OT (ish) RPi 2 released
There is an Israeli company, solid-run.com, that makes a board called the Hummingboard that is the same size as the Raspberry Pi but is more powerful. I recently ordered the high-end model, the Hummingboard i2ex, which comes with 1 GB RAM, and have just installed Rivendell on it (under Debian Wheezy). It has three built-in audio interfaces: analog (1/8" headphone jack), SPDIF, and HDMI. So far I got it to import and play a small (20 second) audio file without a problem. Next, I want to see if I can get GPIO to work. Rob ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] OT (ish) RPi 2 released
> On Feb 6, 2015, at 12:42 38, James L. Stewart wrote: > > On the RPI audio output. I seem to remember someone claiming the audio > output of the RPI being inferior in some way such as it only really being > about 14-bit resolution. (I think "CD audio" is also only 14-bit with an > algorithm that fakes it up to 16 bits). Standard ‘Red Book’ CD audio is linear 16 bit stereo PCM (big endian) at 44100 samples/sec with no companding. See http://en.wikipedia.org/wiki/Compact_Disc_Digital_Audio. There is also a quadraphonic (4 channel) mode defined, but it is very seldom encountered In The Field. > It seems to sound okay to me, but perhaps I am not listening critically > enough. The RPI does play (and record) just fine using USB audio devices (as > I'm sure the BBB does too), but I am concerned that just about all I/O (like > Ethernet) on the RPI is "funneled" into its (eventually single) USB input so > I think one needs to be careful not to overload this bus. IIRC, the onboard audio (output only) is also implemented via the USB subsystem. My experience is all with Gen 1 units, so take it with a large grain of salt. Cheers! |--| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |--| | A room without books is like a body without a soul. | | -- Cicero| |--| ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] OT (ish) RPi 2 released
On RPI reliability, so I do have three RPI's running a continuously looping videos for a customer in a "digital signage" application that have now been running fine for about 10 months without problems, but the previous 3 months were not so good as all three SD cards mysteriously "went bad". Perhaps it was just a problem with defective SD cards, but a year earlier I had my original RPI destroy two other SD cards running RaspBMC, but haven't had a problem since. On the RPI audio output. I seem to remember someone claiming the audio output of the RPI being inferior in some way such as it only really being about 14-bit resolution. (I think "CD audio" is also only 14-bit with an algorithm that fakes it up to 16 bits). It seems to sound okay to me, but perhaps I am not listening critically enough. The RPI does play (and record) just fine using USB audio devices (as I'm sure the BBB does too), but I am concerned that just about all I/O (like Ethernet) on the RPI is "funneled" into its (eventually single) USB input so I think one needs to be careful not to overload this bus. Finally, later versions of the RPI at least tried to address the mounting issues of previous models in that now they have all the cabling only taking up 2 sides of the device instead of the previous octopus looking mess of wires out all 4 sides. Makes case design much easier too. The RPI evolution is interesting to say the least. From it's humble beginnings of a couple of school teachers throwing something together for their own purposes then hoping to sell the remaining of a minimum order of 1000 units on the internet to the 4 Million units that have been produced today, now with the announcement of the RPI 2 this could explode up to yet a whole new level. Date: Fri, 6 Feb 2015 11:49:14 -0500 From: Frederick Gleason To: User Automation System Subject: Re: [RDD] OT (ish) RPi 2 released Message-ID:<65d9801b-0b30-4aa3-aa97-a6a0baea7...@paravelsystems.com> On Feb 5, 2015, at 17:52 56, James L. Stewart wrote: I do agree somewhat with the earlier comment about using such a settup for anything serious. Historically I haven't found the RPI to be the most stable thing, FWIW, I did some testing with the first generation units and found much the same thing. I?ve since moved on to the BeagleBone Black. A few dollars more, but better documented and*much* more stable. And, you can actually physically mount the thing without going through crazy contortions! On the downside, the BBB does lack onboard audio output. ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] OT (ish) RPi 2 released
On Feb 5, 2015, at 17:52 56, James L. Stewart wrote: > I do agree somewhat with the earlier comment about using such a settup for > anything serious. Historically I haven't found the RPI to be the most stable > thing, FWIW, I did some testing with the first generation units and found much the same thing. I’ve since moved on to the BeagleBone Black. A few dollars more, but better documented and *much* more stable. And, you can actually physically mount the thing without going through crazy contortions! On the downside, the BBB does lack onboard audio output. Cheers! |--| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |--| | A room without books is like a body without a soul. | | -- Cicero| |--| ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] OT (ish) RPi 2 released
Hi, They do have that pi desktop that is graphics accelerated in development. It looked fancy but sadly doesn't seem to be ready for public use. Shielding etc is a concern however I've got two Pi's sitting at work (one as an internal playout for the building and another for a custom app we run). The custom app must be nearing 2 years up time by now. I also have a custom rackmount case with fans etc with a pi inside. I haven't even looked at the device for at least 6 months so reliability seems fine to me. Wayne Merricks The Voice Asia On 05/02/15 22:52, James L. Stewart wrote: Yea, I just ordered one of these things, and of course they are back ordered for weeks. One thing that still annoys me about the RPI (which applies to the new one too), is that we STILL don't have accelerated graphics happening for these things except for a very few specific cases (XBMC, omxplayer, and Wayland). Even though Rivendell shouldn't need much acceleration, I worry that any GUI movement at all could overtax the main processor and make bad things happen. I guess newer version of QT can work directly with Wayland (I haven't followed up about how feature-complete or stable it all is yet), but I'm guessing the version of QT Rivendell uses with won't talk to Wayland. All that said, when I get mine in, I might try compiling up some binaries for Raspian and see what happens. I do agree somewhat with the earlier comment about using such a settup for anything serious. Historically I haven't found the RPI to be the most stable thing, but I agree with the RPI community in that at this point things like the quality of the power supply (like you probably can't buy an off-the-shelf power supply with a microUSB connector on it that is robust enough for mountain-top transmitter site use!) makes a significant difference. Putting on the optional heat sinks really helps too, especially if you try overclocking them at all. All that said, they are a lot better now then they were when they first came out when I was constantly either having them eat their file system, or even occasionally destroy the whole SD card! I have one of the 1st 10,000 units (later ones I have are better), and once had to use early firmware loads (later ones are much improved). At least a typical RPI installation would NOT have any moving parts, but then there is RF shielding issues (if it does end up in a room with a 25,000 Watt transmitter), and lightning proximity protection. A hardware watchdog added to the device might make it all worthwhile however. (A side note, I once gave someone an old Pentium-III computer for use as a file server - Linux of course - that all the fans in it had either failed or were failing, so I under clocked it until it ran cool, then disconnected all the fans, and I think the silly thing is still working to this day (many years later!)) ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] OT (ish) RPi 2 released
Yea, I just ordered one of these things, and of course they are back ordered for weeks. One thing that still annoys me about the RPI (which applies to the new one too), is that we STILL don't have accelerated graphics happening for these things except for a very few specific cases (XBMC, omxplayer, and Wayland). Even though Rivendell shouldn't need much acceleration, I worry that any GUI movement at all could overtax the main processor and make bad things happen. I guess newer version of QT can work directly with Wayland (I haven't followed up about how feature-complete or stable it all is yet), but I'm guessing the version of QT Rivendell uses with won't talk to Wayland. All that said, when I get mine in, I might try compiling up some binaries for Raspian and see what happens. I do agree somewhat with the earlier comment about using such a settup for anything serious. Historically I haven't found the RPI to be the most stable thing, but I agree with the RPI community in that at this point things like the quality of the power supply (like you probably can't buy an off-the-shelf power supply with a microUSB connector on it that is robust enough for mountain-top transmitter site use!) makes a significant difference. Putting on the optional heat sinks really helps too, especially if you try overclocking them at all. All that said, they are a lot better now then they were when they first came out when I was constantly either having them eat their file system, or even occasionally destroy the whole SD card! I have one of the 1st 10,000 units (later ones I have are better), and once had to use early firmware loads (later ones are much improved). At least a typical RPI installation would NOT have any moving parts, but then there is RF shielding issues (if it does end up in a room with a 25,000 Watt transmitter), and lightning proximity protection. A hardware watchdog added to the device might make it all worthwhile however. (A side note, I once gave someone an old Pentium-III computer for use as a file server - Linux of course - that all the fans in it had either failed or were failing, so I under clocked it until it ran cool, then disconnected all the fans, and I think the silly thing is still working to this day (many years later!)) ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] OT (ish) RPi 2 released
guess I am an old fuddy duddy on this one... I would think that an older rack mounted unit, core two, or even a basic single would playback airplay just fine... at best, you'll likely use this machine for emergency playback, and rdsync..and you would want something somewhat dirt proof, and RF proof in the process a PI, or any really small box, shoulder or an industrial car cpu, seems like a bad idea to me, no matter what it is running On Mon, 2015-02-02 at 19:22 +0100, Morten Krarup Nielsen wrote: > A port of the Broadcast Appliance CD would be nice ;-) > > > 2015-02-02 19:20 GMT+01:00 Wayne Merricks > : > Hi all, > It is very likely the Pi 2 will be a very capable little > rdairplay box with built in GPIO (and you can even plug a > decent USB card into it for sound now that it has 4 ports). ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] OT (ish) RPi 2 released
A port of the Broadcast Appliance CD would be nice ;-) 2015-02-02 19:20 GMT+01:00 Wayne Merricks : > Hi all, > > Slightly off topic but it relates to an offsite transmitter with silence > fall back and probably Riv itself. > > The Raspberry Pi 2 has been released with 1GB RAM and a quad core Arm v7 > (as opposed to a single core Arm v6). I played around with Riv on the > original Pi, it was almost usable but very painful. > > It is very likely the Pi 2 will be a very capable little rdairplay box > with built in GPIO (and you can even plug a decent USB card into it for > sound now that it has 4 ports). > > Still the same price as the original too which isn't bad. > > Regards, > > Wayne > ___ > Rivendell-dev mailing list > Rivendell-dev@lists.rivendellaudio.org > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev > ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] OT (ish) RPi 2 released
Hi all, Slightly off topic but it relates to an offsite transmitter with silence fall back and probably Riv itself. The Raspberry Pi 2 has been released with 1GB RAM and a quad core Arm v7 (as opposed to a single core Arm v6). I played around with Riv on the original Pi, it was almost usable but very painful. It is very likely the Pi 2 will be a very capable little rdairplay box with built in GPIO (and you can even plug a decent USB card into it for sound now that it has 4 ports). Still the same price as the original too which isn't bad. Regards, Wayne ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
