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by hukuzatuna
Tue Jan 28, 2014 11:20 pm
Forum: Automation, sensing and robotics
Topic: interpreting data from a TSL2651 light sensor
Replies: 9
Views: 2814

Re: interpreting data from a TSL2651 light sensor

I'm still at work, but I have a TSL2561 breakout board waiting in a box for me at home. I'll solder the headers on and see if I can replicate your results this evening. I'll try it with both the Arduino and the Pi and see if the numbers are in the same order of magnitude.

Cheers,
Phil
by hukuzatuna
Mon Aug 26, 2013 7:35 pm
Forum: Automation, sensing and robotics
Topic: AUV project
Replies: 1
Views: 1686

AUV project

TLDR? I thought I'd take a moment to introduce my little project. I'm designing and building an AUV (autonomous underwater vehicle). The design is basically an underwater airplane (with the airfoils inverted, of course). It will be positively buoyant, and require forward motion to remain submerged. ...
by hukuzatuna
Sun Aug 25, 2013 1:13 pm
Forum: Beginners
Topic: Internet
Replies: 3
Views: 716

Re: Internet

You are more reliable to get a stable connection if you use a RJ45 Ethernet Cable. Just plug one end of the cable into a Ethernet port in your router and the other end into the Pi's Ethernet port. True, but I have the Edimax USB WiFi and it works with Raspian out of the box. It should work! And the...
by hukuzatuna
Sun Aug 25, 2013 1:07 pm
Forum: Beginners
Topic: Finally got the RasPi up and working. Now what?
Replies: 3
Views: 804

Re: Finally got the RasPi up and working. Now what?

It's always great to be an excited noob, and I'm excited for you! ;) I'd recommend (and this is just me) teaching yourself Python. There's a series of excellent books by Mark Lutz called "Learning Python," "Programming Python," and "Python Pocket Reference." I'm lucky t...
by hukuzatuna
Sun Aug 25, 2013 12:46 pm
Forum: Beginners
Topic: Help with ssh
Replies: 5
Views: 1315

Re: Help with ssh

There is a way to do that in one step with the backtick execution operator: ls -l `which ssh` True that, but in the beginner's section I thought it easier to show the separate commands. OP, note the backtick operators in UNIX, which replace the text between the backticks with the output from that t...
by hukuzatuna
Sun Aug 25, 2013 3:37 am
Forum: Beginners
Topic: Help with ssh
Replies: 5
Views: 1315

Re: Help with ssh

Could you also give us the output of "which ssh" and then "ls -l path" where "path" is the output from the which command? This will tell us if you're using the right ssh command and what the permissions are. You <I>should</I> see /usr/bin/ssh -rwxr-xr-x 1 root wheel 732...
by hukuzatuna
Sat Aug 24, 2013 6:57 pm
Forum: Camera board
Topic: Streaming from camera rpi with necat and mplayer
Replies: 9
Views: 23405

Re: Streaming from camera rpi with necat and mplayer

I think there are option mismatches on various versions of netcat. The command that worked for me was nc -l 5001 | mplayer -fps 31 -cache 1024 - Which is very similar to the camera documentation. The command on the RPi was raspivid -hf -vf -t 99999 -o - | nc 192.168.0.6 5001 Now, I did have to fuss ...
by hukuzatuna
Fri Aug 23, 2013 4:39 pm
Forum: Beginners
Topic: Portable pi power source
Replies: 2
Views: 665

Re: Portable pi power source

Just for reference, I have a Pi with camera and USB WiFi, and my Mophie 4000mAH battery pack will run it for about four hours. Given what you're driving, I would suggest you add up the amperage you need and then calculate the size of battery you need to drive it all for three hours. That way you're ...
by hukuzatuna
Fri Aug 23, 2013 4:12 pm
Forum: General discussion
Topic: power supply
Replies: 4
Views: 1045

Re: power supply

Having said that I would NOT buy power supplies on ebay. There is a significant chance of getting low quality and potentially dangerous fakes that way. I second plugwash's comment. Power supplies are inexpensive and plentiful from reputable sources (i.e., not E-bay), so I feel it's best to just use...
by hukuzatuna
Fri Aug 23, 2013 4:06 pm
Forum: HATs and other add-ons
Topic: gpsd failing on boot, but starts manually
Replies: 15
Views: 35201

gpsd failing on boot, but starts manually

Hi all. I have a AdaFruit Ultimate GPS board wired to a USB cable. It is running on /dev/ttyUSB0. I have run "dpkg-reconfigure gpsd" and set the values correctly. I have a powered USB hub into which the GPS is connected, so it never loses its fix when the Pi is shut down. When I reboot the...
by hukuzatuna
Wed Aug 21, 2013 12:48 am
Forum: Automation, sensing and robotics
Topic: Noob power question
Replies: 2
Views: 736

Re: Noob power question

Thank you! Much appreciated! I'll see how long it will power my little INS. :-)
by hukuzatuna
Tue Aug 20, 2013 8:36 pm
Forum: Automation, sensing and robotics
Topic: Noob power question
Replies: 2
Views: 736

Noob power question

I'm getting into the electronics side of things, so I'm waaaaay outside my comfort envelope (I'm much more of a coder). I'm trying to build an inertial guidance system (accelerometer, gyros, and GPS on the way - but that's another story). I need to be able to carry it around with me to train it what...
by hukuzatuna
Mon Aug 19, 2013 7:18 pm
Forum: Beginners
Topic: Connection to a PC
Replies: 6
Views: 7260

Re: Connection to a PC

I get RPi program displays on my laptop by first connecting to the RPi with ssh -X pi@192.168.0.10 (obviously you'd need to use your correct IP address.) Then just start the program, e.g., arduino, and the display appears on my laptop (Mac, though - I'm not sure what X11 servers are available for Wi...

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