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by Bikeman
Sat May 07, 2016 10:38 am
Forum: Automation, sensing and robotics
Topic: Distributed Computing for BOINC
Replies: 3
Views: 4829

Re: Distributed Computing for BOINC

Sorry for the late response, but I think it is useful to have this answered FTR: Yes, you can do distributed computing with BOINC on Raspberry PIs. You will need two things: BOINC itself: BOINC can be provided by the Raspbian repository, e.g "sudo apt-get install boinc" will install it. You then nee...
by Bikeman
Sun Aug 09, 2015 10:59 am
Forum: Camera board
Topic: Taking photo from a Telescope...
Replies: 41
Views: 15084

Re: Taking photo from a Telescope...

Hi! As for mouse/keyboard/screen: I've tested the setup described here: https://www.raspberrypi.org/forums/viewtopic.php?p=798225#p798225 for a while now and having a small TFT or LCD touch-screen on the pi itself is very handy. For controlling stuff beyond that, remote means via WIFI (ssh / vnc / h...
by Bikeman
Sun Aug 09, 2015 9:02 am
Forum: Camera board
Topic: Taking photo from a Telescope...
Replies: 41
Views: 15084

Re: Taking photo from a Telescope...

Very, very cool. I wonder what other astronomical targets (besides planets) might be well suited for the raspi cam (must be bright because of short integration time plus not negligible read-out noise and rel. small in angular diameter). What about star clusters, like M13, perhaps? I guess you would ...
by Bikeman
Sat Aug 08, 2015 6:14 pm
Forum: Camera board
Topic: Taking photo from a Telescope...
Replies: 41
Views: 15084

Re: Taking photo from a Telescope...

I'll make other tests later but I need to buy a longer flex cable before :) Cool! The moon shot above is a mosaic, right? At prime focus and ca f=300mm focal length of my firstscope I already have a format filling moon (see photo above), so with your setup the moon should not fit into the FOV. CS HB
by Bikeman
Tue Aug 04, 2015 10:08 pm
Forum: Camera board
Topic: Taking photo from a Telescope...
Replies: 41
Views: 15084

Re: Taking photo from a Telescope...

Controlling the Raspi Cam remotely is no problem (the setup in the picture above uses MJPEG-Streamer (for live updating, webcam like Web page), lighthttpd web server (for file download) and ssh, via WiFi. But...you will also need something to steer the telescope remotely, and with the small sensor a...
by Bikeman
Tue Aug 04, 2015 1:53 pm
Forum: Camera board
Topic: Taking photo from a Telescope...
Replies: 41
Views: 15084

Re: Taking photo from a Telescope...

You might be interested in this thread https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=45246&p=796612#p796612 Gordon77 Yes, seen that one, very interesting! I actually posted first to that thread but then moved it here so I don't disrupt the discussion on using the camera for guiding purpos...
by Bikeman
Tue Aug 04, 2015 1:29 pm
Forum: Camera board
Topic: Taking photo from a Telescope...
Replies: 41
Views: 15084

Re: Taking photo from a Telescope...

Having a small LCD screen attached helps a lot when using the Raspi Cam with an undriven small telescopes. Usually I use the Firstscope in this configuration for sun spot observations (with a solar filter of course), which explains the seeker construction :-). I tried it on the moon last night. The ...
by Bikeman
Wed May 20, 2015 9:59 am
Forum: Troubleshooting
Topic: GLIBC_PRIVATE not defined in file libc.so.6...
Replies: 5
Views: 3068

Re: GLIBC_PRIVATE not defined in file libc.so.6...

The Raspberry Pi "1" will run a different executable altogether (compiled for the ARMv6, no NEON support CPU of the original RPi). OK, let's continue the discussion in the [email protected] forum.

Cheers,
HB
by Bikeman
Tue May 19, 2015 11:15 am
Forum: Troubleshooting
Topic: GLIBC_PRIVATE not defined in file libc.so.6...
Replies: 5
Views: 3068

Re: GLIBC_PRIVATE not defined in file libc.so.6...

Hi! This is not related to BOINC, the problem appears in the [email protected] application (I'm a co-author of it). I'm not convinced that the error message is actually related to the root cause at all, it seems like your tasks are crashing at different points in the computation (but always pretty early...
by Bikeman
Sat Apr 25, 2015 9:22 am
Forum: Raspbian
Topic: [email protected]
Replies: 9
Views: 3622

Re: [email protected]

Hi You can speed up [email protected] on the Raspberry Pi 2 quite a bit by following the instructions given here: http://einstein.phys.uwm.edu/forum_thread.php?id=9686&nowrap=true#138467 The code in the science app of [email protected] uses a third party library called FFTW ("Fastest Fourier Transform of th...
by Bikeman
Wed Apr 01, 2015 12:59 pm
Forum: General discussion
Topic: boinc headless
Replies: 2
Views: 1306

Re: boinc headless

Simply get BOINC from the repo and attach to a project (assuming working under Raspbian). sudo apt-get update sudo apt-get install boinc-client You can then attach to a project using the BOINC command line tool boinccmd, the process of signing up might differ a bit for different BOINC projects but i...
by Bikeman
Wed Apr 01, 2015 12:49 pm
Forum: General discussion
Topic: The first PI - Crunch data? (like seti etc)
Replies: 4
Views: 1471

Re: The first PI - Crunch data? (like seti etc)

Hi! I would always recommend the project I work for, [email protected] ;-), but if you are looking for projects to find cures for diseases, maybe this is closest (malaria cures): http://boinc.ucd.ie/ A list (not quite up-to date perhaps but should give a clue) of major BOINC projects is here (hint: look...
by Bikeman
Sat Feb 21, 2015 10:33 pm
Forum: Troubleshooting
Topic: Cannot SSH to RPi2
Replies: 5
Views: 955

Re: Cannot SSH to RPi2

As with most unix-ish tools, you can ask ssh to dump some diagnostic messages using the -v option. Repeating the option increases the verbosity , max is -vvv ,so ssh -vvv [email protected] should give you an idea what ssh is trying to do and why it might fail. DO NOT post the output here unless yo...
by Bikeman
Fri Feb 13, 2015 7:27 pm
Forum: Beginners
Topic: Parallel computing, Pies and PCs?
Replies: 8
Views: 1621

Re: Parallel computing, Pies and PCs?

Theoretically, in an academic sense, you can have a heterogeneous network of hosts (also PIs an PCs) to jointly work on a single task: BOINC for example http://de.wikipedia.org/wiki/Berkeley_Open_Infrastructure_for_Network_Computing is such a system of distributed computing and there are many scient...
by Bikeman
Mon Feb 09, 2015 11:00 am
Forum: Troubleshooting
Topic: Why is the PI2 camera-shy ?
Replies: 162
Views: 265141

Re: Why is the PI2 camera-shy ?

OringinalGeek wrote:It's been a long time since my field theory classes, but I believe the problem isn't photons. Most digital designers forget about EMI problems.
[nitpicking] everything EM is photons. Just at different wavelengths/photon energies.[/nitpicking] Sorry couldn't resist.
by Bikeman
Sun Feb 08, 2015 4:14 pm
Forum: Raspbian
Topic: [email protected]
Replies: 9
Views: 3622

Re: [email protected]

Hi! From early results I'd guess that a Raspberry Pi2 has about 5..6 times the productivity on [email protected] compared to the orginal Raspberry "1". Note that the BOINC version that comes with Raspbian wheezy does not detect the NEON (or ARMv7) CPU-feature correctly, so [email protected] will send the sa...
by Bikeman
Fri Feb 06, 2015 7:14 pm
Forum: Advanced users
Topic: Overclocking success over 1GHz?
Replies: 39
Views: 20397

Re: Overclocking success over 1GHz?

My heatsink pack arrives today, I'll pop it on my Pi 2 and report the results. Why? Do you live in the Mojave, Sahara or Gobi desert or somewhere the outdoor temp is above 40C and you're running it out of doors? If not the you DO NOT need a heatsink or a fan. It has one effect only, it gives a £1 o...
by Bikeman
Sun Jan 11, 2015 6:30 pm
Forum: Camera board
Topic: Verifying telescope pointing coordinates with the PiCam
Replies: 2
Views: 1717

Verifying telescope pointing coordinates with the PiCam

Hi! For those PI camera fans who are also into astronomy, here's a little project idea I've explored to a point were I'm confident it's feasible: If you have a telescope that lacks automatic GOTO stuff but at least is driven to compensate for Earth's motion, it can sometimes be hard to actually find...
by Bikeman
Sat Dec 06, 2014 4:03 pm
Forum: Camera board
Topic: long exposure not working on B+
Replies: 123
Views: 27302

Re: long exposure not working on B+

You can get almost the same effect already as a true 20 sec. exposure, by taking four 5-second exposures and adding them together. Not always. 4 frames will only increase SNR by 2x (sqrt). Also if the signal at 5 sec exposure is below noise level it won't work. Just for the records: in terms of SNR...
by Bikeman
Sat Dec 06, 2014 3:57 pm
Forum: Graphics, sound and multimedia
Topic: Board w/ Camera & Transmitter
Replies: 2
Views: 732

Re: Board w/ Camera & Transmitter

I have a RaspiPi A+ with camera board and an Edimax WiFi dongle that acts as a hotspot and can stream pictures via MJPG-streamer (e.g. see http://blog.miguelgrinberg.com/post/how-to-build-and-run-mjpg-streamer-on-the-raspberry-pi ). Powered with a 2800mAh rechargable battery (I used a model that is ...
by Bikeman
Wed May 28, 2014 8:27 pm
Forum: Advanced users
Topic: Using GPU_FFT with data
Replies: 22
Views: 5394

Re: Using GPU_FFT with data

I'm trying to figure out how to actually use GPU_FFT! Through my searching thus far, I think that I put my data received via SPI into the char_dev file somehow, then execute the hello_fft.bin file to process them. Is this correct? How do I write data to the char_dev file? Thank you! No, that's not ...
by Bikeman
Sun May 18, 2014 9:12 am
Forum: Off topic discussion
Topic: Parallella: A Supercomputer For Everyone
Replies: 156
Views: 45446

Re: Parallella: A Supercomputer For Everyone

I also received my Parallella board now. I think it's important for readers here to understand that this thingy is very, very different from a Raspberry Pi. Most of the projects that I've seen on Pis will not work well on Parallellas: - The Parallella needs active cooling. Without fan it will overhe...
by Bikeman
Wed Jan 01, 2014 8:47 pm
Forum: Camera board
Topic: Idea: Traffic safety: tailgater trap
Replies: 0
Views: 564

Idea: Traffic safety: tailgater trap

Hi! What about this: A Raspberry Pi with camera board, installed in a car so that the camera takes pictures of the rear area behind the car. The challenge would be to detect visually the rough distance of the next car behind you. The PI could get simultaneously a speed reading of your own car (eithe...
by Bikeman
Mon Dec 23, 2013 10:15 am
Forum: Beginners
Topic: [email protected]
Replies: 4
Views: 5146

Re: [email protected]

Hi! I think the info given in the quoted thread is a bit outdated, [email protected] should work with the BOINC package that comes with Raspbian: sudo apt-get update sudo apt-get install boinc-client for a minimal install and if you want the Boinc manager GUI as well, use sudo apt-get boinc-manager if you a...
by Bikeman
Tue Dec 17, 2013 5:54 pm
Forum: Camera board
Topic: IR camera results?
Replies: 10
Views: 6418

Re: IR camera results?

Here's an example image: a spy shot of my "cat room" in the attic (it used to be my room, but now the two cats have their favorite boxes, bed, and stuff in there :-) ). The distance to the cat in the armchair to the right is approx 2.5 m. The shot was done in near complete darkness wrt visible light...

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