General :: What Kind Of Chip To Use For Underwater Robotics
Jul 5, 2010
I have no experience with embedded systems hardware and am looking to build a micro-budget underwater robot for exploring the bottom of a lake on the family homestead. I don't have much money to spend on this, but I want to run Debian Linux (I have lots of Linux Admin experience and am right at home with a terminal) or something like that on a small chip which needs to be able to:
Connect to the control computer via ethernet. Get digital or analog data from a GPS module, pressure sensor, etc. Control a few thrusters. Do various other hardware IO functions. Possibly control a robotic arm (this is a long shot, I know). And costs less than about 100 dollars. I have no experience with embedded systems hardware so I really don't know what to buy or where to start, aside from the fact that I heard that this would be a good place for something ARM-related. I am a software developer with time to burn as far as writing the programs to support this goes.
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Jan 10, 2010
I've install Linux UBUNTU in a HP Brio and i can't configure my modem correctly (HP Fast Modem D4810B with 3 com x2)
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Feb 27, 2010
I've just installed F12 and during boot and at the desktop, the screen has an issue. I have a 9700 pro and the resolution gets detected properly (1440x900), but it's like the frequency is slightly off. I see the screen fine, but the screen looks almost as if it's underwater. My monitor accepts two freq at 1440x900, and the issue is at the 60Hz setting. If I change it to 75Hz, the screen is fine, but the corruption is still there during boot and at the login screen. Ubuntu 8.04, 9.10 and Mint 8 all work just fine at 60Hz. This is using the default driver for my ATI card. The corruption was there in anaconda when I was installing F12, but figured it would not be there after the install. Can I somehow force 75Hz to the kernel mode set? I'll try to get a video up on ..... soon as it can describe my problem perfectly without words.
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Apr 21, 2010
I've been having these weird problem with sound after the last few updates. The background music of a ..... video or audio CD playback would be fine, but any vocal/commentary track that contains human voice would be all jumbed up and sounds like you are listening to it from underwater. The volume for the human voice part of the audio would also be a lot lower than the music track.
Not sure what the problem is, and the only way of solving it was through system restore (which actually takes more time than a reinstall). The test sound in YAST sounds fine (well, it's a music track afterall), and most instrumental music on ..... seems to play correctly.
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Jul 5, 2010
I trying to make my ubuntu 8.04 working with an Hardware modem 3com us robotics message modem. Is there any manipulation to do? My objective is to install an Hylafax server on this ubuntu ( already done), but no modem is recognized.
PS: my computer doesn't have any internet connection
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Jul 8, 2010
I'm new to ubuntu. I'm trying to get my US Robotics external serial modem working so I can use Ubuntu.
I copied
wvdial & dependencies:
libuniconf4.6
libwvstreams4.6-extras
libwvstreams4.6-base
to a flash drive.
How do I get them to /var/cache/apt/archives? I tried to copy and drag&drop wont work.
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Jan 20, 2009
on my server (fax server)with Cento O.S 5.2 final kernel 2.6.18-92.el5 the external serial modem 56k us robotic is not recognized.Kudzu not notes the modem.PS .On the same server ,same modem ,same serial but with Centos 4.5 ,this as regular detect.
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Sep 1, 2010
Im having xeltek eeprom programer but I cannot read the chip data on the buffer file, when I read the chip using programer the datas are being sent to the buffer I can just see the adress line ,hex line and ascii line then I dont know which is the exactly data ,
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Jan 31, 2011
Looking to build the first computer system from scratch and I have chosen Linux as my system. Learning about Linux is a must as I would like to get away from MS. Also, building the system will better equip me when I pursue a business venture within the next year or two.I presently take course work in accounting for a bachelor degree, but will attain another degree in software engineering, both from Herzing University. My present skill level in programming?
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Feb 7, 2010
I've been using this USB Wi-Fi Adapter since 7.10 on my previous box and it always worked fine. I've used it also on a 9.04PPC edition. Now I've got a new PC (AMD AthlonII x3 435, 4GB RAM) and I've installed Ubuntu 9.10 Amd64 Desktop, and this device won't work. It doesn't even show on lsusb. Here's my output:
Code:
roby@roby-desktop:~$ lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
[code]...
Other commands (iwconfig, ifconfig, sudo lshw -C network) doesn't show anything that has something to do with wireless networking. I've also tried ndiswrapper, but I cannot manage to get x64 drivers (they comes only with an installer package for Vista64, wich I have not).
That's my kernel version and architecture:
Code:
roby@roby-desktop:~$ uname -mr
2.6.31-19-generic x86_64
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Jun 8, 2011
I have a Realtek WN511b wireless card with a BM4321 chip.
It runs on the wl driver but when I boot the system the card won't install.
With help (I am noob) we have figured out that the ssb and the b43 drivers are installing even though I have them blacklisted. I have seen similar problems described elsewhere but no real fixes.
I can boot the system (Dell d630) then pop the card out and re-insert, enter password and it connects no problem.
It would be nice if it simply installed on boot.
Wondering if anyone had a solution?
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May 28, 2011
When I shut down the computer, then turn it back on- everything goes fine- system loads, no errors.BUTWhen I am in a turned on system, and I ask it to restart (reboot), when the machine restarts and the system starts loading- I get a kernel panic. Every single time- but only when I ask the machine to restart. If it helps, the error didn't appear on Fedora 14.
To make it more colorful- the same situation happens with my Ubuntu 11.04 (I have triple boot- Fedora, Windows and Ubuntu- I am learning Fedora to switch from Ubuntu). When I had Ubuntu 10.10- all was ok- when put 11.04- the error is the same- I can't restart my PC properly. The only system that loads as it should every time is Windows 7.Could anyone pls help me? My guess is that it's some kind of kernel change, because the error didn't show up in the previous versions of both systems (Fedora and Ubuntu).Did memtest (after 12 passes there were still no errors), tried acpi options, modeset, nomodeset (using grub2)- all for nothing.
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Mar 10, 2010
I have such kind of problem recently. I need to run a command in the remote machine. The script's first line contains "source profile.xxx"
#!/bin/sh
. ${CONF_XXX}/profile.perf
Therefore, when I run it this way: ssh root@pprh4 /scratch/pa/pa701/path/1.2/bin/plcclient.sh -s it says "profile.xxx No such file or directory" And another one is how can I use a specific file for storing my password so that I don't have to type it?
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Sep 10, 2010
When I open program files in windows some of them are almost nothing but boxes and triangles. I was always curious what the hell it was.
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Nov 2, 2010
Ubuntu works pretty well on most of the desktop computer (drivers support), the basic functionality like, keyboard, sound card, network card generally works well. But when it comes to laptop computer, really need luck. Some laptop's keyboard works weird, some cannot play music. I am recently thinking of buying a new laptop. Is there any website shows you which brand of laptop recommends which version of linux? or ubuntu works better on which brand of laptop?
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May 4, 2011
I have squeeze with gnome (gdm3) desktop.How to disable any kind of device automounting in gnome?
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May 12, 2010
Is there some kind of certification or certificate for Python?
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Aug 20, 2009
I am trying to setup and Oracle cluster with RHCS on CentOS 5.3. I am trying to find any documentation for RHCS. I can't seem to locate any kind of admin guide etc for it. I'm used to ServiceGuard for clustering and can navigate through Luci fairly well for the basic setups of the machine, but would like more info on how RHCS works and its nuances. Does anyone know any good online resources for RHCS?
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Oct 29, 2010
It is possible to install this kind of menu on suse? I watched several movies on yt and it seems to be nice usability improvement comparing to standard OS menu - clean,simple, accessible.
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Aug 27, 2010
I cannot get sounds of any kind to play on my machine. I tried the Comprehensive Sound Guide, but did not get very far. (I'm not very proficient with these things.) I did lspci -v and got:
Code: Audio device: nVidia Corporation MCP79 High Definition Audio (rev b1)
Subsystem: Micro-Star International Co., Ltd. Device 4570
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at fae78000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
but I cannot find my sound card on the ASLA site. I tried to follow the Sound Guide instructions after that, but I got lost.
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Mar 10, 2011
What kind of video card(s) should work with Ubuntu?I have a Power Mac G4 (AGP Graphics) with it's original card (ATY,Rage128Pro), which apparently doesn't work well with Ubuntu. I'm considering upgrading the card but don't want to spend a fortune on it.I would also like to know what the minimum HD or partition size for a Maverick installation and running is. Is 10 GB enough?
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Apr 25, 2011
I have squeeze with Gnome installed. My problem is the monitor goes into "black" and I'd like to disable any kind of of stanby-mode. If I search for screensaver using Synaptic, I have these packages installed:
xdg-utils
gnome-settings-daemon
but in gnome menu cannot find any screensaver options. Power Manager I've disabled already in the "Startup Programs". Howto disable all screensaver and power-save options from the command line?
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Oct 11, 2010
I've just updated my Dell Inspiron Mini to Maverick Meerkat (10.10), and I've very quickly run into quite a few problems. First, it took an awful long time to install all of the updates. Is that normal? Perhaps it's just because I'm using a puny netbook?
When the updates were finished and I rebooted, I logged in without any problems, but then got a gray screen. I've seen that screen before, when Ubuntu loads (especially with Lucid), but it doesn't go away. I rebooted using Desktop Edition instead of Netbook Edition, and there was an improvement, but the top toolbar is blank.Additionally, and most importantly, I can't get an Internet connection of any kind, wired or wireless.
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Dec 2, 2010
Just installed xsnow on my sisters Ubuntu pc and it runs ok, however it seems not to work properly with the desktop icons. When a snowflake falls over the icon it kind of cuts a jagged line through it. The icon is then restored when you hover over it.
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Jul 23, 2009
Does anybody know any Java package that can be used for playing music with different kind of instruments. Is any package which implements the java.sound api http://java.sun.com/products/java-me.../doc-midi.html
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Mar 3, 2010
It seems I can't burn any kind of disc (cd/dvd, audio/video/data) usgin my internal sata burner (sr0). I treied googling around and reinstalling everything from dvd+rw-tools up but the error is still there. the burner works fine with windows on the very same pc (dual boot). I tried different media and different speeds. when using an usb burner everything's fine...
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Aug 2, 2015
I am running debian linux wheezy, and recently, all of a sudden, all videos in my iceweasel browser have been refusing to play videos of any kind at full volume. I am, however, able to download the video and play it at full volume on vlc player or sytem video player.Why iceweasel is acting this way?
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Dec 5, 2009
How can I download multimedia codecs which enables me to play all kind of audio and video files. I am using 64 bit F12.
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Feb 6, 2011
I've been trying to get this sorted for days. I'm trying to use this older Toshiba Satellite 1800 as a kind of Internet Radio kiosk. Sound was working in Xubuntu but everything was too slow so I switched to fresh minimal install from the mini cd and used the guide from psychocats to install IceWM. No I have _no_ sound. (It works perfectly off of Knoppix 6.0.1 live cd.)
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Sep 30, 2010
Is it possible to do this? I'm just thinking maybe I can run KDE without using the GPU so that I can use the GPU for computation (CUDA). The system I'm thinking of using is a laptop with Nvidia GTX260M video card. I've seen people talk about frame buffer, but I don't quite understand it because it seems that some people are talking about using frame buffer even when they have a video card on their system.
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