tommy

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  1. Like
    tommy reacted to NicoD in Armbian in 3D   
    Something else I tried. The Armbian Terracotta Army. I need to add textures to the ground.



  2. Like
    tommy reacted to NicoD in Why my content need to be approved by a moderator?   
    That seems a very paradoxical question. To ask that question you have to first start writing a question, but the question you ask can't be written before you start asking a question.  It's like a new big bang is happening in my head.
    Welcome to the forum.
  3. Like
    tommy reacted to konsgn in New OPi Zero - Yet another high temperature issue...   
    Just a heads up, I think the bigger issue between the revision 1.1 and 1.4 is that they removed the "U5" buck AVCC/RTC 3.3V converter, Instead in its place they put a "R9" 0 ohm resistor from the GPIO 3.3v regulator "u55". As such it makes sense that they removed the "Q11" gpio voltage enable switch, since now that switch must always be on.
    In testing the voltages, the Rev 1.1 GPIO VCC is 3.37v, whereas the AVCC/RTC Vcc is 3.27v.
    For Rev1.4 though, the GPIO/AVCC/RTC Vcc is actually 3.4v.
    I am currently removing "R9" from rev 1.4 and installing a diode to drop some voltage. It may help to keep the device from overheating. If that doesn't help, perhaps adding a secondary 3.3v buck regulator can fix the issue.
     
    Update: With the diode to drop voltage, the resulting voltage on AVCC/RTC is 2.91V.
    This results in the following temp readings stable/finger tested:
    19:02:53: 1200MHz  0.71  19%  11%   6%   0%   1%   0%   -2°C
    19:02:58: 1008MHz  0.73  19%  11%   6%   0%   1%   0%   -4°C
    19:03:03:  240MHz  0.67  19%  11%   6%   0%   1%   0%   -9°C
    19:03:08:  240MHz  0.62  19%  11%   6%   0%   1%   0%  -10°C
    19:03:13:  240MHz  0.57  18%  10%   5%   0%   1%   0%  -11°C
    19:03:18:  240MHz  0.52  18%  10%   5%   0%   1%   0%  -17°C
    19:03:24:  240MHz  0.48  17%  10%   5%   0%   1%   0%  -20°C
    19:03:29:  240MHz  0.44  17%  10%   5%   0%   1%   0%  -21°C
    This leads me to believe that the temperature may not be significantly if at all different between v1.1 and v1.4. It would make sense for the slight voltage difference of voltage on the AVCC pins would change the internal temperature readings. They probably don't have any sort of voltage reference internally, and that would lead to any sort of internal reading based on analog voltages to be affected by voltage changes of the AVCC power.
    I will test this with a power supply on the seperated AVCC/RTC to see if it does indeed result in different internal readouts.
     
     
    Alright, here's what I found:

    All of these results are running the armbianmonitor right after start up and each show a "finger test" draw represents draw on the Avcc/rtc  from the power supply, and is quite stable.
     
    Orangepi v1.4 test: r9 removed, AVCC&RTC=3.27 about 50mA draw during test:
    Orangepi v1.4 test: r9 removed, AVCC&RTC=3.4V about 50mA draw during test:

    Orangepi v1.4 test: r9 removed, AVCC&RTC=2.90V about 40-50mA draw during test
     
    Results: The internal temperature sensing cannot be trusted, especially since there is no voltage reference.
    Tomorrow I will try to place a 150mA 3.3V LDO regulator instead of "r9" and see if I can find a way to actually test temperature.

    PS: I would add images if I could figure out how to do so outside of hosting them somewhere else.
     
    Sidenote:
    "R9" is glued down, so to minimize chance of lifting pads when desoldering try this:
    1- apply generous amounts of flux from flux pen.
    2) use solder wick to remove as much solder as possible
    c Once all the solder is gone, rotate the part 90 degrees with flat end needle nose pliers while slightly pushing into the board.
     
    If you managed to get enough solder off, the part should break free without lifting the pads. And if they do lift, you can always solder onto the test points on the board.
  4. Like
    tommy reacted to NicoD in Recommended SBC below 20USD range.   
    Yes I have. I like my XU4 for gaming and for rendering. It may be faster than the C2, but it`s not as versitile. I use the C2 as a laptop powered by a power bank and a 7" display. It does everything right.  It`s power efficient, doesn`t overheat, very fast when overclocked to 1.75Ghz and ram to 1104Mhz.
    Software is great. Perfect Youtube playback, I used it a lot for video editing and rendering when traveling.
    None of the other SBC`s do so well in all these things. While ths also the oldest design.
    But the C2 isn`t perfect. It has troubles with a display resolution of 1080p or higher.

    My use cases are different of that of most other people. For many high resolutions are more important. Then the C2 isn`t a good choice. It`ll stay my laptop until I find another that is faster, as small and light and doesn`t overheat.
    Cheers.
  5. Like
    tommy reacted to TonyMac32 in Recommended SBC below 20USD range.   
    Well, it's one of only two with 4 fast cores, the other being XU4.  The RK3399 doesn't even have that going for it.  It honestly is in the top 3 performers in any case, every time I use any other board I get a rude awakening about how bad a desktop experience can be. RK3399 is somewhat better but is still poorly supported kernel wise by comparison.
  6. Like
    tommy reacted to yam1 in Recommended SBC below 20USD range.   
    Here are some of my SBCs that are under $20 (see photo below).  I have divided them into two categories, with hdmi and not. The ones on the left are without, and on the right are with. The ones without are mostly orangepi's and nanopi's. Just do a search on their web sites and if it is under $20, I have it. One thing to consider is the ones with two spi channels (e.g. nanopi core 1 - note core 2 is better but its over $20), this would allow connecting two spi screens. If you connect two relatively big 3.2 ili9341 screens, with the browser stretched across them, your experience would still suffer but it would be okay in some extreme situations. The ones with hdmi include, raspberrypi zero w (double spi), nanopi A64 (double spi), pcduino4 nano (double spi), nanopi m1 - same as pcduino4 nano (double spi), and the other three orangepi's. Bananapi zero is slightly over $20, I have it connected to a lap dock. Of these, the best is pcduino4 nano (get it on ebay between $5 to $16), supported well in software (armbian), and nanopi a64 ($19.99?) is my second choice, software support is getting there (may be?), at least double spi works with pine64 image (latest kernel). Raspberrypi Zero W is only $5 from my local store, and dual spi screen with camera works, you really can't beat it in price.

  7. Like
    tommy reacted to Igor in Known SBCs with true video acceleration?   
    Because software development and item support is expensive and they have a limited amount that can be blasted on this. They still have to make a profit.
     

    Some help more, some nothing, but majority is done for free by the community. Linux is a community project per see and if you want a quality Linux, you have to do something about.

    Our capitalistic world function on the principle that winner takes it all - if you get a huge popularity and related big sales numbers, you don't need to give not a single dollar back to the community, while on the other hand, you have. 
  8. Like
    tommy reacted to Igor in pcm5102 dac not showing on armbian 5.65 [SOLVED]   
    Igor's 2do list is long, very long and I have nobody to ask to do that instead of me.  This is a few months faster way: https://www.armbian.com/get-involved and with bigger certainty that this feature gets implemented. Overlay repo: https://github.com/armbian/sunxi-DT-overlays
  9. Like
    tommy reacted to esbeeb in Recommended SBC below 20USD range.   
    I've got a NanoPi Neo Core 2, with the NAS kit.  It lets me attach a 2.5" SATA SSD drive, all contained in an aluminium case (which elevates it above "toy", to my eyes).  The whole kit, minus SSD hard drive, was about $80 (and I'd call this a good value, worth it), however shipping from China took a long time (like a few weeks to a month).  Disk performance isn't stellar, but it doesn't suck either.  Much more performant-feeling than a Raspberry Pi.  It's adequate, to make your own personal LAN server, like say OpenMediaVault (for serving SMB file shares), or Nextcloud (DAV file shares, with SSL encryption, work great in Gnome Nautilus out-of-the-box, or Linux Mint's file manager, Nemo, once you install the package "davfs2"). 
     
    Small home offices should be a good fit for this kit, where LAN file-share usage day-to-day is light-to-mediumly demanding.
     
    What I love about this kit is that the H5 CPU has decent mainline kernel support.  This helps to assure me that this board won't just be a "flash in the pan", and I'll very likely be able to get kernel security updates for at least a few years into the future.
     
    I mention this all to underscore my earlier point that to get something minimally sturdy, performant, long-lasting and above all useful in a way that goes beyond a tinkerer's toy (which can be a great starting point for many, don't get me wrong), then to me, this $80 kit is about the lowest I'd personally go.  For $20, I'd rather go eat a pizza or something.
  10. Like
    tommy reacted to hojnikb in Recommended SBC below 20USD range.   
    Guys, you're going at this all wrong. For desktop use and 20$ best bet for a good experience is a used Dell, HP with a Core2 Duo type cpu. These are plentiful, since businesses get rid of them and you can easily pick one up for 20$ or less if you shop around.
     
    It's going to give you much better desktop experience with common apps and OS than any A7 or A53 based SBC (these CPUs are muuuch slower than Core2). If you can spring extra $$$ for a few more gigs of ram (these typically come with either 2 or 4GB of ram) and a 60GB SSD (18$ from aliexpress) you can get a fluid desktop experience for peanuts.
  11. Like
    tommy reacted to sfx2000 in Recommended SBC below 20USD range.   
    I suppose another way of saying things - Fast, Good, Cheap - pick any two...
     
    This isn't going to win fans here perhaps - but shop around - Intel PC on a Stick running Ubuntu...
     
    $35 shipped in US from Amazon - and that Baytrail chip sku does support AES-NI...
     
     

  12. Like
    tommy reacted to esbeeb in Recommended SBC below 20USD range.   
    OK, you've got me there.  I must say I dislike the mUSB power connector, and would prefer a sane barrel connector.
  13. Like
    tommy reacted to sfx2000 in Recommended SBC below 20USD range.   
    That's a bit harsh
     
    Heck, most of these SBC's are simple toys - but it's what we do with them that is really the important part - and some of the boards have more flexibility and capability than what the RPF offers in their line.
     
    The issues with the Pi are mostly wrapped about VC4 and its design - VC4 is common to all the Pi's, it 40nm, and it's limited to single channel, and 1GB (that, and the binary closed source blob that is VcOS/ThreadX)- I seriously doubt that Broadcom is going to do anything with VC4 like a die-shrink, so either RPf/Broadcom moves forward with VC5 on a smaller node, or RPf has kind of run their course... HW is one thing, but also they're still shipping ARMv6 stuff (Pi Zero/Zero W) and want to keep a single distro, which holds back the Pi3's (and perhaps Pi2')...
     
    Their last couple of board releases are actually very well engineered (Pi Zero W and Pi3 B+ 1.3) - I think they learned quite a bit with the Pi3 and WiFi, and having to do global wireless certs brought their hardware forward. Layouts are better, and they're doing a good job on the BOM front, keeping costs low - and just look at the board - the number of passives (caps/resistors/inductors) says a lot about the design team - the lastest boards look pretty good
     
    That RPf shipped Pi Zero W - they kept the BCM2835 ARMv6 well past the use by date - similar to what Apple did with Ipad2 and variants (iPad Mini/iPod Touch 5G) - which hurt the SW side as those devices drug out compatibility requirements well past the useful dates as ARM and Apple accelerated performance..
     
    https://allenpike.com/2014/the-ipad-zombie/
     
    The Pi Zero W is the Raspberry Pi Zombie... and it holds back an entire platform that is Raspberry Pi... none the less - they ship a lot of those board and Pi3 B+'s as well...
     
    I'll agree - Pi is not industrial grade components, but with their OEM partners (Sony and Embest), good manufacturing and good software QA for the most part...  There's been some exceptions with first-run boards, and that's happened more than once.
     
    FWIW - totally concur on the mess that was the official PoE hat - I don't think it was a good design, and even shipped, it had problems... seemed kinda rushed, and perhaps it was an answer to a question that had already been answered.
  14. Like
    tommy reacted to gounthar in Recommended SBC below 20USD range.   
    Why not La Frite?
    Quad 64-bit ARM Cortex-A53 CPU Cores at 1.2GHz
    2 Geometry + 3 Pixel ARM Mali-450 GPU Cores
    1GB DDR4 @ 2400MHz
    128Mb SPI NOR
    HDMI 1.4 with 1080P Output
    100Mb Fast Ethernet
    USB 2.0 Host
    USB 2.0 OTG
    IR Sensor
    Currently at $35+shipping at KickStarter. The naked board is at $15...
  15. Like
    tommy reacted to Igor in Recommended SBC below 20USD range.   
    mUSB powering is considered industrial grade? This HAT is also not very industrial ... 

    Shortcomings of RPi are over discussed and if you find something to add, add here
    ... after you read the whole thread. Rpi is just a popular toy.
  16. Like
    tommy reacted to esbeeb in Recommended SBC below 20USD range.   
    I suggest being willing to spend considerably more than $20.  Once you go too cheap, the quality of workmanship goes down so much, that you'll likely end up regretting you didn't spend more, when your board fails on you with the slightest mishap.  For example, don't expect all these Raspberry Pi knockoffs to be anywhere as robustly constructed as the Raspberry Pi itself (which is entirely made out industrial-grade components, albeit the performance is slow).  I do not work for Raspberry Pi, BTW, but I own two of them, and appreciate their robust construction.
     
    Don't get me wrong, I'm a fan of cheap.  But what I want is "Cheap and Cheery", not "Cheap and Grumpy."  Excruciatingly cheap boards will likely bite you for your cheapness.  There's a slightly higher price to go from "Cheap and Grumpy", up to "Cheap and Cheery."  Lurking on this forum for a good long while will eventually help you to discern between the two.
  17. Like
    tommy reacted to NicoD in Recommended SBC below 20USD range.   
    Where are you from? Odroid`s are easy to get. There`s a European sell point, an American, Korean, Australian. ...
    https://www.odroid.co.uk/
    https://ameridroid.com/
    https://www.hardkernel.com/main/shop/good_list.php?lang=en
    http://auseparts.com.au/index.php?route=product/category&path=97
     
    The Tinker Board has got many faults. My first one broke, components just fell of. It`s powerhungry and overheats too quickly what makes the use of a fan needed. It does have good youtube and ok environment.
    The Libre Computer Board ROC-RK3328-CC should be ok. I did not try it yet. I should look into getting some of their boards. I don`t know of the youtube playback on that. Could be awful,could be good.

    The NanoPi M4 is awesome. It`s future proof with it`s USB3, gigabit ethernet, great wifi on-board, eMMC, 6-cores, .. I`ve never had a board that does everything so well from the start. Check my youtube for that one.
    Cheers
  18. Like
    tommy reacted to NicoD in Recommended SBC below 20USD range.   
    Under 20$
    the Raspberry Pi Zero W for 10$. It's very slow with only 1 core at 1Ghz. You can watch youtube with kiosk browser. And surf, very slowly.
    The Banana Pi M2 Zero for 20$. A lot faster. 4x1.2Ghz. You need a good heatsink for it or it overheats constantly. Not very good video playback.
    For 25$ the Rock64. Faster, better, but no wifi on-board.
    A raspberry pi 3b+ is 35$ and again a bit better.
    For your use case an Odroid C2 is perfect. Good Youtube playback, fast, doesn't overheat, ... That's about 50$

    Those or the ones I have, and I can recommend. But for 20$ you will not get much.
    You need to know that many sbc's don't have hardware acceleration for video playback in browsers. So expect choppy and low resolution video with most. The Odroid C2 does this best in Linux.
    Also if a board only has 512MB ram then you want be able to open many tabs.

    FriendlyArm also has got some interesting cheap boards.

    I review sbc's on their desktop capabilities. Of all those I've got a video, except the C2.
    https://www.youtube.com/channel/UCpv7NFr0-9AB5xoklh3Snhg
  19. Like
    tommy reacted to Igor_K in Recommended SBC below 20USD range.   
    @tommy I doubt any SBC below $20 would provide an acceptable desktop user experience.  

    Probably orange pi pc would be an option, but I've got no real experience with orangepi.
  20. Like
    tommy reacted to Igor_K in Recommended SBC below 20USD range.   
    @tommy the best sbc for what? What is your use case? 
  21. Like
    tommy reacted to The in Recommended SBC below 20USD range.   
    Banana Pi M1 is in that range. It depends on your application. Do you want a cheap SBC or do you have an application where you need more power?
  22. Like
    tommy reacted to chwe in Recommended SBC below 20USD range.   
    if you go higher than 60$ anyway, then I would have a look into the RK3399 based ones. Towards 'evil inside'.. it depends on your needs, I assume once HW acceleration on RK3399 works properly they may even beat the Atoms on desktop.. For me desktop means >30 tabs in browser.. No 2GB ram desktop can deal with that.. 4GB ones maybe.. For my work I just had to deal with windows 7 again.. Seems they've a crappy OOM handling there..
     
    The preview picture from the RPi thread @Igor posted is an 'industrial grade' board (or at least near to industrial grade). Question here.. do you need it? This guy sent a Odroid C2 2600m deep.. For sure not an 'industrial grade' board:
    an OPi Zero (with USB wifi, cause XR819 is crappy) together with a few ESPs currently manage a lot of monitoring stuff in my Lab - for sure not industrial grade, but they do what they're supposed to do. So, even a 10$ toy can do serious work..
     
    RK3288/tinker is IMO outdated, performs probably not that bad for desktop scenarios due to 32bit with 2GB ram may be ok-ish. If desktop means some web-surfing and watching youtube.. I assume an android driven one may fit better, normally those SoCs are supposed to run android and hardware acceleration works there a way earlier than in Ubuntu/Debian.
  23. Like
    tommy reacted to NicoD in Recommended SBC below 20USD range.   
    Works in firefox. Even in Armbian. I don't know how. But it does. But Firefox does suck for surfing.
    For that I use Vivaldi. There 1/3 lost frames in 1080p Youtube. Chromium 2/3 lost frames. Firefox 0 frames lost. All video works perfect. I even use it as video player on the NanoPi M4.
    For me the NanoPi M4 is the perfect 2nd desktop pc. It's very fast. It's got an amazing heatsink. It's stable, haven't had 1 crash with it in hundreds of hours use. I've tried many different sbc's on there desktop capabillity's. The Odroid C2 was the best until the NanoPi M4.
    Tinker board does ok in video, but many things don't work. I've tried it again this week, and it even got worse. I need 3 different OS'es to be able to do everything.
    To my knowledge not many others than the C2, tinker, rasp and RK3399 have HW acc in Linux. The Raspberry sucks to work with.
  24. Like
    tommy reacted to Igor in HowTo: Setting up resolution 1600x900   
    ... but by observing this patch and doing some search and reading results, one can add new screen resolution on his own.