Re: [time-nuts] RPi/ beagle bone-like computer without video
On 12/3/16 12:27 AM, David J Taylor wrote: From: jimlux The Raspberry Pi OS includes a free MATLAB licence, as I expect you already know. yes, but "Note that you cannot install MATLAB as a standalone application or execute MATLAB code locally on a Raspberry Pi. To develop applications for the Raspberry Pi to be used in standalone operation, please see the Raspberry Pi Support from Simulink®." and of course, we're not using Simulink There's always a catch, isn't there! Perhaps this helps? https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=153608 "The open source "Octave" package is a Matlab clone and is the Raspbian repository. We've run a large base of Matlab code on Linux Octave with little or no change. One significant catch is that the version in the Raspian repository is 3.x which does not have the graphical IDE enabled by default as do the 4.x versions. The later can be built on RPi (512k or better versions) by following the procedure in the Octave Wiki. (https://www.gnu.org/software/octave/)" Cheers, David THis is not directly time-nuts-ey, but since we talk a lot about small processors that have timers and such, and because people might want to run Matlab on that processor, I figure I'll continue. TVB, let us know if we're drifting here. yes, one could build Octave and run that - I use Octave a LOT, although in general, I like Matlab's plotting better than Octave - the default choices are better, so I wind up with lots of .m code to make the plots look right. Octave also doesn't have some of the Matlab toolbox stuff, although, as described in that forum thread, you can find some of it. More to the point, the Matlab code I need to run wasn't written by me, but by someone else, who's not available to do any of this adaptation to Octave. ALso, this kind of "track down a replacement or reconfigure" takes time, which is money - so you have a tradeoff between maybe finding a different processor board (which also takes time) that costs a bit more, but runs your code unchanged without porting to Octave. ANother thing I've noticed is that Matlab is a LOT faster than Octave for some operations, I've not bothered to figure out exactly what it is that makes the difference, but I've got a a bunch of stuff that I'm doing where I read in 10 million samples and process them (e.g. radio output in a VITA-49 VRT file) and that "read, parse, and store into a big array" is an order of magnitude faster on Matlab than on Octave (on the same computer). I'm using the GUI Octave, so maybe its JIT compiler isn't as sophisticated as Matlabs - or maybe more of the underlying functionality in Octave is in .m files, as opposed to invoking a compiled function. By the way, there apparently IS a way to run non-simulink Matlab code on the Pi or BB... for some (TBD) limited subset of Matlab, you can put it in a simulink "execute Matlab code" block; compile the Simulink model, then squirt it down to the BB or Pi. Pretty clunky to my mind.. but there it is. "With the MATLAB Function block, you can incorporate MATLAB code into your Simulink model." https://www.mathworks.com/help/simulink/ug/what-is-a-matlab-function-block.html?s_cid=srchtitle it doesn't allow plot, disp, figure - but I wouldn't be using those on the BB or Pi... Basically, it will generate C/C++ code, so anything that Matlab can compile to C code will work. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
From: jimlux The Raspberry Pi OS includes a free MATLAB licence, as I expect you already know. yes, but "Note that you cannot install MATLAB as a standalone application or execute MATLAB code locally on a Raspberry Pi. To develop applications for the Raspberry Pi to be used in standalone operation, please see the Raspberry Pi Support from Simulink®." and of course, we're not using Simulink There's always a catch, isn't there! Perhaps this helps? https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=153608 "The open source "Octave" package is a Matlab clone and is the Raspbian repository. We've run a large base of Matlab code on Linux Octave with little or no change. One significant catch is that the version in the Raspian repository is 3.x which does not have the graphical IDE enabled by default as do the 4.x versions. The later can be built on RPi (512k or better versions) by following the procedure in the Octave Wiki. (https://www.gnu.org/software/octave/)" Cheers, David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk Twitter: @gm8arv ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
As far as I know Matlab is x86 only, of course you can generate c code from Matlab but that has its own challenges. On Fri, Dec 2, 2016 at 2:14 PM jimlux wrote: > On 12/2/16 10:08 AM, David J Taylor wrote: > > From: jimlux > > > > We're processing several thousand samples, received over a serial port > > or USB in a few seconds. The algorithm (in Matlab, hence the need for > > Linux) grinds for around 30 seconds to produce the output. > > === > > > > > > The Raspberry Pi OS includes a free MATLAB licence, as I expect you > > already know. > > > > > > yes, but > > "Note that you cannot install MATLAB as a standalone application or > execute MATLAB code locally on a Raspberry Pi. To develop applications > for the Raspberry Pi to be used in standalone operation, please see the > Raspberry Pi Support from Simulink®." > > > and of course, we're not using Simulink > > > Cheers, > > David > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On 12/2/16 10:08 AM, David J Taylor wrote: From: jimlux We're processing several thousand samples, received over a serial port or USB in a few seconds. The algorithm (in Matlab, hence the need for Linux) grinds for around 30 seconds to produce the output. === The Raspberry Pi OS includes a free MATLAB licence, as I expect you already know. yes, but "Note that you cannot install MATLAB as a standalone application or execute MATLAB code locally on a Raspberry Pi. To develop applications for the Raspberry Pi to be used in standalone operation, please see the Raspberry Pi Support from Simulink®." and of course, we're not using Simulink Cheers, David ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
From: jimlux We're processing several thousand samples, received over a serial port or USB in a few seconds. The algorithm (in Matlab, hence the need for Linux) grinds for around 30 seconds to produce the output. === The Raspberry Pi OS includes a free MATLAB licence, as I expect you already know. Cheers, David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk Twitter: @gm8arv ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
Check out the Beaglbone Green, it has the HDMI chip removed, The HDMI Chip on the black i can confirm causes gps antenna issues with the small patch antennas on the PCB, yet having the antenna on a patch lead works fine Ive made a GPS cape for these using a Ubox Max Series GPS photos of this are on Hewball.com.au Cheers Hewball > On 1 Dec. 2016, at 4:42 am, jimlux wrote: > > I'm looking for a small linux single board - similar to RPi or Beaglebone > Black, but don't need the HDMI, or video stuff. > Preferably without weird connectors, and available for wide temperature > ranges (it's for a data logger/collector in the field) > > What's out there? > > There's BBB in industrial flavor (-40 to +85C ) for $60-70 > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
As much as it pains me to recommend them some of the iot modules sound like a good fit, like the Intel atom one. On Fri, Dec 2, 2016 at 12:13 PM jimlux wrote: > On 12/2/16 8:51 AM, Attila Kinali wrote: > > On Fri, 2 Dec 2016 08:05:17 -0800 > > jimlux wrote: > > > >>> I'm measuring 0.350A with max cpu usage on all cores and the following > >>> settings: > >>> > >> @ 5V, right, so 1.75W going full out. That's a useful number to know. > > > > I once did an board with an i.m233 (arm9 at 400MHz) and it did less > > than 0.5W IIRC. But I think this is about the lower you can do without > > tweaking the OS. > > > >>> Apart from that I read somewhere that the beaglebones have terrible EM > >>> characteristics. But I can't find my source so take it with a grain of > >>> salt :-) > > > > Yes. The BBB is badly designed in this regard... The RPI is better there. > > > >> I must say, there are more of these things available in almost too wide > >> a variety.. You could spend days going through all the datasheets and > >> websites - I suspect that they ALL have about the same power consumption > >> for a given amount of processing horsepower - same feature size on the > >> die, after all - so it's more about peripherals and ease of use > > > > There are way too many, IMHO. And a lot of them are not usefull for > > a lot of stuff or have very bad support. The Odroid are a prime example > > of this. There is a "community" around them, yet getting them to do > > anything usefull is a major pain. There is a handfull of companies > > I know of, who do provide good support and those are the ones I am > > usually sticking to (unless I have special needs). > > > >> And, it's more likely that idiosyncracies in the distros have been > >> identified and it's more likely that the software will run on them after > >> its built. > > > > It's actually better to go with a company who is invested in giving > > you a working board than using something popular. Especially one that > > cares to push all its patches upstream. > > > > Beside the mentioned Toradex, and Aries Embedded, there is also Olimex > > which is known for it's wide variety of boards with good support. > > Depending on your exact requirements, I would probably go for one of > > the i.mx233 boards (the imx233 nano is quite neat) or A10 or A33 board. > > Especially the i.mx233 is nice as it has an on-chip Li-poly > charger/controller. > > All you need to do is to supply it with 5V and it does the rest. > > > > A note of warning: a lot of the boards from Olimex have not enough ground > > pins for the high speed singals they provide. If you are transfering data > > with high-speed (several 10MHz) over the headerpin connectors, you will > need > > to add some additional ground connections. > > > > What are the exact requirements you have? How much computational power > > do you need? How do you interface the sensors? How many boards will > > you need? Is it out of question to build your own processor board using > > one of the ARM9's in QFP? What is your budget? > > We're processing several thousand samples, received over a serial port > or USB in a few seconds. The algorithm (in Matlab, hence the need for > Linux) grinds for around 30 seconds to produce the output. > > we're not sensitive on the "board cost" - labor to design a board is > expensive, so a board that has low power, and the right connectors, so > it's <1 day to make cables, etc. is a better deal than several weeks to > design a board and spin it, etc. > > > > > > > The reason why I'm asking the last two questions is, it is often more > efficient > > to do your own CPU board if you have to design a PCB anyways for the > sensors, > > need more than 10-20 boards and you can live with one of the "small" > ARM9's > > that come in QFP packages (like the i.mx233 or AM1705). > > > > That would come later, and be "someone else's problem" - We do the proof > of concept, "demonstrate that it works in a relevant environment", and > then it goes from there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On 12/2/16 8:51 AM, Attila Kinali wrote: On Fri, 2 Dec 2016 08:05:17 -0800 jimlux wrote: I'm measuring 0.350A with max cpu usage on all cores and the following settings: @ 5V, right, so 1.75W going full out. That's a useful number to know. I once did an board with an i.m233 (arm9 at 400MHz) and it did less than 0.5W IIRC. But I think this is about the lower you can do without tweaking the OS. Apart from that I read somewhere that the beaglebones have terrible EM characteristics. But I can't find my source so take it with a grain of salt :-) Yes. The BBB is badly designed in this regard... The RPI is better there. I must say, there are more of these things available in almost too wide a variety.. You could spend days going through all the datasheets and websites - I suspect that they ALL have about the same power consumption for a given amount of processing horsepower - same feature size on the die, after all - so it's more about peripherals and ease of use There are way too many, IMHO. And a lot of them are not usefull for a lot of stuff or have very bad support. The Odroid are a prime example of this. There is a "community" around them, yet getting them to do anything usefull is a major pain. There is a handfull of companies I know of, who do provide good support and those are the ones I am usually sticking to (unless I have special needs). And, it's more likely that idiosyncracies in the distros have been identified and it's more likely that the software will run on them after its built. It's actually better to go with a company who is invested in giving you a working board than using something popular. Especially one that cares to push all its patches upstream. Beside the mentioned Toradex, and Aries Embedded, there is also Olimex which is known for it's wide variety of boards with good support. Depending on your exact requirements, I would probably go for one of the i.mx233 boards (the imx233 nano is quite neat) or A10 or A33 board. Especially the i.mx233 is nice as it has an on-chip Li-poly charger/controller. All you need to do is to supply it with 5V and it does the rest. A note of warning: a lot of the boards from Olimex have not enough ground pins for the high speed singals they provide. If you are transfering data with high-speed (several 10MHz) over the headerpin connectors, you will need to add some additional ground connections. What are the exact requirements you have? How much computational power do you need? How do you interface the sensors? How many boards will you need? Is it out of question to build your own processor board using one of the ARM9's in QFP? What is your budget? We're processing several thousand samples, received over a serial port or USB in a few seconds. The algorithm (in Matlab, hence the need for Linux) grinds for around 30 seconds to produce the output. we're not sensitive on the "board cost" - labor to design a board is expensive, so a board that has low power, and the right connectors, so it's <1 day to make cables, etc. is a better deal than several weeks to design a board and spin it, etc. The reason why I'm asking the last two questions is, it is often more efficient to do your own CPU board if you have to design a PCB anyways for the sensors, need more than 10-20 boards and you can live with one of the "small" ARM9's that come in QFP packages (like the i.mx233 or AM1705). That would come later, and be "someone else's problem" - We do the proof of concept, "demonstrate that it works in a relevant environment", and then it goes from there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On Fri, 2 Dec 2016 08:05:17 -0800 jimlux wrote: > > I'm measuring 0.350A with max cpu usage on all cores and the following > > settings: > > > @ 5V, right, so 1.75W going full out. That's a useful number to know. I once did an board with an i.m233 (arm9 at 400MHz) and it did less than 0.5W IIRC. But I think this is about the lower you can do without tweaking the OS. > > Apart from that I read somewhere that the beaglebones have terrible EM > > characteristics. But I can't find my source so take it with a grain of > > salt :-) Yes. The BBB is badly designed in this regard... The RPI is better there. > I must say, there are more of these things available in almost too wide > a variety.. You could spend days going through all the datasheets and > websites - I suspect that they ALL have about the same power consumption > for a given amount of processing horsepower - same feature size on the > die, after all - so it's more about peripherals and ease of use There are way too many, IMHO. And a lot of them are not usefull for a lot of stuff or have very bad support. The Odroid are a prime example of this. There is a "community" around them, yet getting them to do anything usefull is a major pain. There is a handfull of companies I know of, who do provide good support and those are the ones I am usually sticking to (unless I have special needs). > And, it's more likely that idiosyncracies in the distros have been > identified and it's more likely that the software will run on them after > its built. It's actually better to go with a company who is invested in giving you a working board than using something popular. Especially one that cares to push all its patches upstream. Beside the mentioned Toradex, and Aries Embedded, there is also Olimex which is known for it's wide variety of boards with good support. Depending on your exact requirements, I would probably go for one of the i.mx233 boards (the imx233 nano is quite neat) or A10 or A33 board. Especially the i.mx233 is nice as it has an on-chip Li-poly charger/controller. All you need to do is to supply it with 5V and it does the rest. A note of warning: a lot of the boards from Olimex have not enough ground pins for the high speed singals they provide. If you are transfering data with high-speed (several 10MHz) over the headerpin connectors, you will need to add some additional ground connections. What are the exact requirements you have? How much computational power do you need? How do you interface the sensors? How many boards will you need? Is it out of question to build your own processor board using one of the ARM9's in QFP? What is your budget? The reason why I'm asking the last two questions is, it is often more efficient to do your own CPU board if you have to design a PCB anyways for the sensors, need more than 10-20 boards and you can live with one of the "small" ARM9's that come in QFP packages (like the i.mx233 or AM1705). Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On 12/2/16 5:31 AM, folkert wrote: If you really need Linux and it needs to be small and low cost and low power, then look at the "Pi Zero". It is a very small Pi that sells for only $5. It has video but just don't plug in the cable. The Pizero and Pi A are about the same power: 400 mW with Wifi off, idle; I'm measuring 0.350A with max cpu usage on all cores and the following settings: @ 5V, right, so 1.75W going full out. That's a useful number to know. power off the display /opt/vc/bin/tvservice -o switch off the ethernet blinkenlights llctl f0 l0 d0 Apart from that I read somewhere that the beaglebones have terrible EM characteristics. But I can't find my source so take it with a grain of salt :-) Could be. In this application, it will be in a box, periodically grinding numbers (ADC samples) supplied to it then storing them, so EMI/EMC isn't a huge issue. I must say, there are more of these things available in almost too wide a variety.. You could spend days going through all the datasheets and websites - I suspect that they ALL have about the same power consumption for a given amount of processing horsepower - same feature size on the die, after all - so it's more about peripherals and ease of use I started looking at RPi and BBB because there are a LOT of them out there, they're cheap, so there's lots of practical experience (not always useful - one needs to spend days going through blogs, forums, websites) And, it's more likely that idiosyncracies in the distros have been identified and it's more likely that the software will run on them after its built. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
> >If you really need Linux and it needs to be small and low cost and low > >power, then look at the "Pi Zero". It is a very small Pi that sells for > >only $5. It has video but just don't plug in the cable. > > > > The Pizero and Pi A are about the same power: 400 mW with Wifi off, idle; I'm measuring 0.350A with max cpu usage on all cores and the following settings: power off the display /opt/vc/bin/tvservice -o switch off the ethernet blinkenlights llctl f0 l0 d0 Apart from that I read somewhere that the beaglebones have terrible EM characteristics. But I can't find my source so take it with a grain of salt :-) Folkert van Heusden -- -- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On 11/30/16 11:08 PM, Chris Albertson wrote: On Wed, Nov 30, 2016 at 12:42 PM, jimlux wrote: I'm looking for a small linux single board - similar to RPi or Beaglebone Black, but don't need the HDMI, or video stuff. Preferably without weird connectors, and available for wide temperature ranges (it's for a data logger/collector in the field) Does it really need to run Linux? If you can give up Linux then there are MANY ARM Cortex M SBCs that are tiny and run on literally micro amps and sell for under $5. You can run a very small-footprint RTOS on the Cortex M that can do "hard" real-time as well is some multitasking and even network. Yes.. Theres a bunch of software to run on it that already exists, and needs Linux. If you really need Linux and it needs to be small and low cost and low power, then look at the "Pi Zero". It is a very small Pi that sells for only $5. It has video but just don't plug in the cable. The Pizero and Pi A are about the same power: 400 mW with Wifi off, idle; ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
Yes, that was exactly my point, There are two kinds of ARM, the A and the M. "A" is the kind used in you smart phone and the Raspberry Pi and BBB and these suck up a few watts of power. The M type is made for low power and could run off a few AA batteries and the battery shelf life would expire before the battery was used up. A simple data logger could keep the CPU in sleep mode most of the time and then it uses literally a few micro amps. On Wed, Nov 30, 2016 at 5:07 PM, Attila Kinali wrote: > On Wed, 30 Nov 2016 16:57:10 -0800 > jimlux wrote: > > > Power consumption - it's going to be battery powered > > I've been looking through the literature, and you can power down some of > > the chips on most of these things. > > If power consumption is an issue for you, then I would advise against > going for a Linux board, unless you either find a board that is > specifically > designed for that purpose (and has the software support) or you have > a few months time to iron out the problems in the Linux kernel to > get the system to go into sleep. > > It's far easier to use something line Nuttx or FreeRTOS on an > Cortex-M3 or arm9 and get that to use little power than it is > to get an full fledged Linux system to behave. > (Stay away from Zephyr, it's a trap) > > Attila Kinali > > -- > Malek's Law: > Any simple idea will be worded in the most complicated way. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On Wed, Nov 30, 2016 at 12:42 PM, jimlux wrote: > I'm looking for a small linux single board - similar to RPi or Beaglebone > Black, but don't need the HDMI, or video stuff. > Preferably without weird connectors, and available for wide temperature > ranges (it's for a data logger/collector in the field) > Does it really need to run Linux? If you can give up Linux then there are MANY ARM Cortex M SBCs that are tiny and run on literally micro amps and sell for under $5. You can run a very small-footprint RTOS on the Cortex M that can do "hard" real-time as well is some multitasking and even network. If you really need Linux and it needs to be small and low cost and low power, then look at the "Pi Zero". It is a very small Pi that sells for only $5. It has video but just don't plug in the cable. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
Having a full blown os is nice when all the processor is responsible for is house keeping and storage. You also get plenty of RAM for buffering prior to writing to persistent storage, like an SD card. That said I have found SD cards to be fusy, at least the microchip FAT libraries. And write cycle times are random sometimes being 0.5 seconds, which means you need to be able to allocate memory the equivalent of a few seconds worth of data for buffering (not an issue on linux systems). On Wed, Nov 30, 2016 at 10:05 PM, Graham / KE9H wrote: > If you are going to go battery powered, I would also recommend staying away > from Linux, go with something like a 32 bit PIC32MX or PIC32MZ. Full > Ethernet stack, RTOS if you need it, can do deep sleep down into the > microamp range when not active. > > --- Graham. > > On Wed, Nov 30, 2016 at 8:35 PM, Gary Chatters < > gcarlis...@garychatters.com> > wrote: > > > There do seem to be a lot of small SBCs out there. I have used boards > from > > Technologic Systems, http://www.embeddedarm.com > > and EMAC, Inc, http://www.emacinc.com > > > > They have numerous models for you to look though. Some various features: > > - SBC or SoM/CoM on baseboard > > - Various form factors including PC/104 > > - Usually with RS-232, USB, GPIO, Ethernet. > > - Many without video. > > - ARM processor > > - Many with industrial temperature range > > - Linux and development environment provided (may not be latest) > > - Lower power then BBB. One model runs at 0.5 watts. Many around 1. > > > > Prices generally 2 or 3 x BBB prices. > > > > Gary > > > > On 11/30/2016 03:42 PM, jimlux wrote: > > > >> I'm looking for a small linux single board - similar to RPi or > >> Beaglebone Black, but don't need the HDMI, or video stuff. > >> Preferably without weird connectors, and available for wide temperature > >> ranges (it's for a data logger/collector in the field) > >> > >> What's out there? > >> > >> There's BBB in industrial flavor (-40 to +85C ) for $60-70 > >> > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/m > > ailman/listinfo/time-nuts > > and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
If you are going to go battery powered, I would also recommend staying away from Linux, go with something like a 32 bit PIC32MX or PIC32MZ. Full Ethernet stack, RTOS if you need it, can do deep sleep down into the microamp range when not active. --- Graham. On Wed, Nov 30, 2016 at 8:35 PM, Gary Chatters wrote: > There do seem to be a lot of small SBCs out there. I have used boards from > Technologic Systems, http://www.embeddedarm.com > and EMAC, Inc, http://www.emacinc.com > > They have numerous models for you to look though. Some various features: > - SBC or SoM/CoM on baseboard > - Various form factors including PC/104 > - Usually with RS-232, USB, GPIO, Ethernet. > - Many without video. > - ARM processor > - Many with industrial temperature range > - Linux and development environment provided (may not be latest) > - Lower power then BBB. One model runs at 0.5 watts. Many around 1. > > Prices generally 2 or 3 x BBB prices. > > Gary > > On 11/30/2016 03:42 PM, jimlux wrote: > >> I'm looking for a small linux single board - similar to RPi or >> Beaglebone Black, but don't need the HDMI, or video stuff. >> Preferably without weird connectors, and available for wide temperature >> ranges (it's for a data logger/collector in the field) >> >> What's out there? >> >> There's BBB in industrial flavor (-40 to +85C ) for $60-70 >> > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
There do seem to be a lot of small SBCs out there. I have used boards from Technologic Systems, http://www.embeddedarm.com and EMAC, Inc, http://www.emacinc.com They have numerous models for you to look though. Some various features: - SBC or SoM/CoM on baseboard - Various form factors including PC/104 - Usually with RS-232, USB, GPIO, Ethernet. - Many without video. - ARM processor - Many with industrial temperature range - Linux and development environment provided (may not be latest) - Lower power then BBB. One model runs at 0.5 watts. Many around 1. Prices generally 2 or 3 x BBB prices. Gary On 11/30/2016 03:42 PM, jimlux wrote: I'm looking for a small linux single board - similar to RPi or Beaglebone Black, but don't need the HDMI, or video stuff. Preferably without weird connectors, and available for wide temperature ranges (it's for a data logger/collector in the field) What's out there? There's BBB in industrial flavor (-40 to +85C ) for $60-70 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On Wed, 30 Nov 2016 16:57:10 -0800 jimlux wrote: > Power consumption - it's going to be battery powered > I've been looking through the literature, and you can power down some of > the chips on most of these things. If power consumption is an issue for you, then I would advise against going for a Linux board, unless you either find a board that is specifically designed for that purpose (and has the software support) or you have a few months time to iron out the problems in the Linux kernel to get the system to go into sleep. It's far easier to use something line Nuttx or FreeRTOS on an Cortex-M3 or arm9 and get that to use little power than it is to get an full fledged Linux system to behave. (Stay away from Zephyr, it's a trap) Attila Kinali -- Malek's Law: Any simple idea will be worded in the most complicated way. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On 11/30/16 3:26 PM, Hal Murray wrote: jim...@earthlink.net said: I'm looking for a small linux single board - similar to RPi or Beaglebone Black, but don't need the HDMI, or video stuff. Don't limit your search to things that doen't have what you don't need. It may be cheaper to get a high volume part and ignore the sections you don't need. Power consumption - it's going to be battery powered I've been looking through the literature, and you can power down some of the chips on most of these things. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
Hi There are a nearly infinite number of ARM based modules and boards. They all are very much a “same / same” sort of thing. They are far more alike than they are different. That’s not to say that they are interchangeable, far from it. The issue for low volume is often more the toolchain (and it’s cost(s)) rather than the hardware. Bob > On Nov 30, 2016, at 7:40 PM, Attila Kinali wrote: > > On Wed, 30 Nov 2016 12:42:51 -0800 > jimlux wrote: > >> I'm looking for a small linux single board - similar to RPi or >> Beaglebone Black, but don't need the HDMI, or video stuff. >> Preferably without weird connectors, and available for wide temperature >> ranges (it's for a data logger/collector in the field) >> >> What's out there? > > If you can acommodate SO-DIMM connectors, then I probably would go for > modules by Toradex[1] or aries[2]. I know that both companies do a good > job of getting complete support for their SoCs and the modules upstream > (very important if you want it to just work) and I also know people I can > kick if something doesn't. A friend also pointed me at [3], but I don't > know how good they are. > > Generally speaking, if you google for "ARM SOM" you will get lots of > results, some of them specially made for industrial environments. > The connectors vary a lot and are too often high density connectors. > Though usually not going below 1mm pitch. SO-DIMM has kind of become > a standard formfactor for a lot of those modules (but all with > different pin-outs!). Outside the ARM sphere, there is very little else. > MIPS processors are mostly networking and video coding SoC's, so probably > overpowered for your application. There are the Intel based Minnowboards, > but they are bascially full fledged PCs with low power consumption. > (I have a Minnow Turbot here, I really like it, tiny as it is, but it's > a heavy handed beast compared to the ARM boards) > > HTH > > Attila Kinali > > [1] https://www.toradex.com/ > [2] http://www.aries-embedded.de/ > [3] > http://www.variscite.com/products/system-on-module-som/cortex-a8/var-som-am33-cpu-ti-am335x-am3354-am3352 > > -- > Malek's Law: >Any simple idea will be worded in the most complicated way. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
On Wed, 30 Nov 2016 12:42:51 -0800 jimlux wrote: > I'm looking for a small linux single board - similar to RPi or > Beaglebone Black, but don't need the HDMI, or video stuff. > Preferably without weird connectors, and available for wide temperature > ranges (it's for a data logger/collector in the field) > > What's out there? If you can acommodate SO-DIMM connectors, then I probably would go for modules by Toradex[1] or aries[2]. I know that both companies do a good job of getting complete support for their SoCs and the modules upstream (very important if you want it to just work) and I also know people I can kick if something doesn't. A friend also pointed me at [3], but I don't know how good they are. Generally speaking, if you google for "ARM SOM" you will get lots of results, some of them specially made for industrial environments. The connectors vary a lot and are too often high density connectors. Though usually not going below 1mm pitch. SO-DIMM has kind of become a standard formfactor for a lot of those modules (but all with different pin-outs!). Outside the ARM sphere, there is very little else. MIPS processors are mostly networking and video coding SoC's, so probably overpowered for your application. There are the Intel based Minnowboards, but they are bascially full fledged PCs with low power consumption. (I have a Minnow Turbot here, I really like it, tiny as it is, but it's a heavy handed beast compared to the ARM boards) HTH Attila Kinali [1] https://www.toradex.com/ [2] http://www.aries-embedded.de/ [3] http://www.variscite.com/products/system-on-module-som/cortex-a8/var-som-am33-cpu-ti-am335x-am3354-am3352 -- Malek's Law: Any simple idea will be worded in the most complicated way. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
Fits very nicely into a 5370 in fact. :) > On Nov 30, 2016, at 17:12, Graham / KE9H wrote: > > The BeagleBone Green is a BeagleBone Black with the HDMI and video chip > removed. > > Mouser Part number *Mouser Part #: *713-102010027, $39, In stock. > > > Makes a great little headless server. > > --- Graham > > == > >> On Wed, Nov 30, 2016 at 3:51 PM, Clint Jay wrote: >> >> Raspberry Pi compute module? Maybe even a Pi Zero? >> >>> On 30 Nov 2016 21:47, "Adrian Godwin" wrote: >>> >>> The tiny g3 routers are worth looking at. They have WiFi, Ethernet and >> USB, >>> cost very little and will usually run wrt54g Linux. Can be rather short >> on >>> memory though. >>> On 30 Nov 2016 8:43 p.m., "jimlux" wrote: I'm looking for a small linux single board - similar to RPi or >> Beaglebone Black, but don't need the HDMI, or video stuff. Preferably without weird connectors, and available for wide temperature ranges (it's for a data logger/collector in the field) What's out there? There's BBB in industrial flavor (-40 to +85C ) for $60-70 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/m ailman/listinfo/time-nuts and follow the instructions there. >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://www.febo.com/cgi-bin/ >>> mailman/listinfo/time-nuts >>> and follow the instructions there. >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
jim...@earthlink.net said: > I'm looking for a small linux single board - similar to RPi or Beaglebone > Black, but don't need the HDMI, or video stuff. Don't limit your search to things that doen't have what you don't need. It may be cheaper to get a high volume part and ignore the sections you don't need. I learned that ages ago when a TI rep suggested a codec chip for an A/D. We just ignored half the chip. It did what we needed at a lower cost that any of the alternatives we could find. -- These are my opinions. I hate spam. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
The BeagleBone Green is a BeagleBone Black with the HDMI and video chip removed. Mouser Part number *Mouser Part #: *713-102010027, $39, In stock. Makes a great little headless server. --- Graham == On Wed, Nov 30, 2016 at 3:51 PM, Clint Jay wrote: > Raspberry Pi compute module? Maybe even a Pi Zero? > > On 30 Nov 2016 21:47, "Adrian Godwin" wrote: > > > The tiny g3 routers are worth looking at. They have WiFi, Ethernet and > USB, > > cost very little and will usually run wrt54g Linux. Can be rather short > on > > memory though. > > > > On 30 Nov 2016 8:43 p.m., "jimlux" wrote: > > > > > I'm looking for a small linux single board - similar to RPi or > Beaglebone > > > Black, but don't need the HDMI, or video stuff. > > > Preferably without weird connectors, and available for wide temperature > > > ranges (it's for a data logger/collector in the field) > > > > > > What's out there? > > > > > > There's BBB in industrial flavor (-40 to +85C ) for $60-70 > > > ___ > > > time-nuts mailing list -- time-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > ailman/listinfo/time-nuts > > > and follow the instructions there. > > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/time-nuts > > and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
Raspberry Pi compute module? Maybe even a Pi Zero? On 30 Nov 2016 21:47, "Adrian Godwin" wrote: > The tiny g3 routers are worth looking at. They have WiFi, Ethernet and USB, > cost very little and will usually run wrt54g Linux. Can be rather short on > memory though. > > On 30 Nov 2016 8:43 p.m., "jimlux" wrote: > > > I'm looking for a small linux single board - similar to RPi or Beaglebone > > Black, but don't need the HDMI, or video stuff. > > Preferably without weird connectors, and available for wide temperature > > ranges (it's for a data logger/collector in the field) > > > > What's out there? > > > > There's BBB in industrial flavor (-40 to +85C ) for $60-70 > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/m > > ailman/listinfo/time-nuts > > and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] RPi/ beagle bone-like computer without video
The tiny g3 routers are worth looking at. They have WiFi, Ethernet and USB, cost very little and will usually run wrt54g Linux. Can be rather short on memory though. On 30 Nov 2016 8:43 p.m., "jimlux" wrote: > I'm looking for a small linux single board - similar to RPi or Beaglebone > Black, but don't need the HDMI, or video stuff. > Preferably without weird connectors, and available for wide temperature > ranges (it's for a data logger/collector in the field) > > What's out there? > > There's BBB in industrial flavor (-40 to +85C ) for $60-70 > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] RPi/ beagle bone-like computer without video
I'm looking for a small linux single board - similar to RPi or Beaglebone Black, but don't need the HDMI, or video stuff. Preferably without weird connectors, and available for wide temperature ranges (it's for a data logger/collector in the field) What's out there? There's BBB in industrial flavor (-40 to +85C ) for $60-70 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.