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by cacb
Tue Jun 09, 2015 7:54 pm
Forum: Troubleshooting
Topic: STICKY: WiFi Issues ? Start here !
Replies: 581
Views: 488216

Re: WiFi Issues ? Start here !

This is an awfully long thread and I have been looking but not finding my answer. I have been using RPIs for a couple of years (I own 3 PI1 Model B plus one PI2 Moddel B). I have a carefully written document describing how to set up things. But as I am helping a friend with his PI1 B+ which will be ...
by cacb
Sun Mar 29, 2015 8:15 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 and 30-Jan firmware
Replies: 37
Views: 25807

Re: DS18B20 and 30-Jan firmware

hmm, the reason that I swapped to my A+ was that the B suddenly stopped working one day following a reboot, so because I'm logging data I just grabbed the spare A+ to try and minimise the data gap. I haven't revisited the B until today but when I investigated the B, I've found it's completely dead ...
by cacb
Sun Mar 29, 2015 2:52 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 and 30-Jan firmware
Replies: 37
Views: 25807

Re: DS18B20 and 30-Jan firmware

After disconnection everything and re-connecting, I found that it "suddenly" worked again. This simple suggestion worked for me. Thanks a lot! I was having the same issue, instead of seeing 28-* in /sys/bus/w1/devices/ I was seeing some weird names like: pi@raspberrypi /sys/bus/w1/devices $ ls 00-3...
by cacb
Tue Mar 24, 2015 5:34 pm
Forum: Off topic discussion
Topic: Future 3D Printed RPi board?
Replies: 104
Views: 6300

Re: Future 3D Printed RPi board?

@cacb; Your computer is not tied up for the whole print time. Once you start your simple metal you can disconnect the USB cable if you want and it will continue to print. The printrboard is a hardware controller. On my LinuxCNC the computer is controlled by software and the computer and the mill or...
by cacb
Tue Mar 24, 2015 7:53 am
Forum: Off topic discussion
Topic: Future 3D Printed RPi board?
Replies: 104
Views: 6300

Re: Future 3D Printed RPi board?

Interesting, and very nice. My self designed, home made 3D printer uses a RPi to control the steppers, the extruder feed motor, and the hot end temperature, as well as monitoring the temperature of the hot end. So yes the RPi has found 3D printing. I do not understand the desire to use Octoprint, t...
by cacb
Mon Mar 23, 2015 11:07 pm
Forum: Off topic discussion
Topic: Future 3D Printed RPi board?
Replies: 104
Views: 6300

Re: Future 3D Printed RPi board?

I have working setup of Octoprint (Octopi a print server) on an A+. It uses a two port unpowered hub so I can go wireless. Testing it out right now. It should be connected to the Printrbot fairly soon. Interesting, I ordered exactly the same printer as you (Printrbot Simple Metal), but getting it t...
by cacb
Mon Mar 23, 2015 10:39 pm
Forum: Off topic discussion
Topic: Future 3D Printed RPi board?
Replies: 104
Views: 6300

Re: Future 3D Printed RPi board?

IT is a reasonable goal to enable as many people as possible to be at least acquainted with the tools of the society. Thus, pretty much anyone can learn to write programs. Most won't write very many programs and the programs won't be very good, but it will enable them to understand--at least a bit-...
by cacb
Tue Mar 03, 2015 8:57 pm
Forum: C/C++
Topic: How do you develop for the Raspberry Pi?
Replies: 5
Views: 3230

Re: How do you develop for the Raspberry Pi?

If you are developing in C/C++ you can write, test and debug most of your code on your PC or laptop. When it's in good shape move the source to the Pi, rebuild and test there. That is how I do it. My programs run fine on Windows, Kubuntu and Raspberry PI, using the Code::Blocks IDE everywhere. I us...
by cacb
Mon Mar 02, 2015 7:00 pm
Forum: Troubleshooting
Topic: File Manager short-cuts gone?
Replies: 0
Views: 130

File Manager short-cuts gone?

I have an older PI1 Model B that I have just upgraded to the latest Raspbian + firmware. To my surprise, I didn't get the latest desktop when I upgraded, so to follow the crowd I did a $ sudo apt-get install raspberrypi-ui-mods This gave me the new desktop, but I find that the new File Manager is mi...
by cacb
Sat Feb 28, 2015 7:49 pm
Forum: Raspbian
Topic: CIFS Permission denied error
Replies: 20
Views: 21691

Re: CIFS Permission denied error

Here is another important point... for automatic mount. Here goes my fstab: //ipaddress/device/folder /media/mountingfolder cifs sec=ntlm,defaults,rw,username=username,password=password 0 0 Thank you for that sec=ntlm addition! I have struggled with this for a loooong time without success. This was...
by cacb
Sat Feb 28, 2015 12:01 am
Forum: Camera board
Topic: Shutter Speed Limit
Replies: 27
Views: 3299

Re: Shutter Speed Limit

Interesting for only 6s with pi noir ? Yes, the small center part of M42 looks similar to early long exposure modified webcam images with similar exposure lengths. If you could double the exposure length or even get 30 seconds, you could no doubt start imaging galaxies with the PI camera. Again, ne...
by cacb
Fri Feb 27, 2015 9:08 pm
Forum: Camera board
Topic: Shutter Speed Limit
Replies: 27
Views: 3299

Re: Shutter Speed Limit

I support the idea of longer than 6s exposures, regardless of noise. I use 6s night exposures for a weather camera currently without problems, longer would be even better. We did similar things with much inferior webcams some years ago and achieved interesting results. Example (Messier M57) from 12 ...
by cacb
Fri Feb 27, 2015 8:55 pm
Forum: Camera board
Topic: Higher resolution RPi camera / alternative
Replies: 13
Views: 5544

Re: Higher resolution RPi camera / alternative

The PI Noir camera comes without an IR-blocking filter, but equally interesting would be a "Noir monochrome" without any bayer-filter. Then read the raw pixel data (forget YUV). The result would be higher resolution and better sensitivity, just no colours.
by cacb
Tue Feb 24, 2015 7:10 pm
Forum: Automation, sensing and robotics
Topic: Stepper Motors on Raspberry Pi?
Replies: 4
Views: 695

Re: Stepper Motors on Raspberry Pi?

Can anyone direct me to a driver which I may use for my project for these two motors, I'd imagine I'm going to need two separate drivers, but if I could get both on one board that'd be great. Thanks for reading my post and for any advice in advance! -Kevin I am guessing you could use 2 of these htt...
by cacb
Tue Feb 24, 2015 6:55 pm
Forum: General discussion
Topic: The busiest Pi...
Replies: 17
Views: 2531

Re: The busiest Pi...

flomach wrote:Do you guys use the standard Raspbian image provided by the fundation or more bare metal images like minibian ?
Standard Raspbian for me. But I uninstall things like "Sonic Pi" and the Wolfram stuff.
by cacb
Mon Feb 23, 2015 6:49 pm
Forum: General discussion
Topic: The busiest Pi...
Replies: 17
Views: 2531

Re: The busiest Pi...

About busy Pis: I have a PI1 Model B running as a weather camera and measuring temperatures since September last year. It grabs an image every minute 24/7 using raspistill. At night it automatically increases the exposure length up to max 6 seconds. I wrote a program that estimates the brightness of...
by cacb
Wed Feb 18, 2015 8:33 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 and 30-Jan firmware
Replies: 37
Views: 25807

Re: DS18B20 and 30-Jan firmware

hello,same problem to me.Do you have fixed? bye cesare Hi, I had this problem a couple of times, and I had difficulties finding the causes. Now it seems there were a couple of things at the same time. Initially, a system upgrade broke it. That was fixed by adding "dtoverlay=w1-gpio" to /boot/config...
by cacb
Tue Feb 17, 2015 12:07 am
Forum: Automation, sensing and robotics
Topic: Temperature Probe Problem
Replies: 16
Views: 3624

Re: Temperature Probe Problem

I did the rpi-upgrade. No difference. The sensor is mounted on a board that can be unplugged from the GPIO pins. I removed it and plugged it on a PI1 B (not B+). There it worked as expected. Then I moved it back. Now it suddenly works on the B+ also :| There must be something funny with the connecti...
by cacb
Mon Feb 16, 2015 11:40 pm
Forum: Automation, sensing and robotics
Topic: Temperature Probe Problem
Replies: 16
Views: 3624

Re: Temperature Probe Problem

I have also just done an update && dist-upgrade and.... now B+ and 2B are now working :) I have checked and double checked. I have exactly the same raspbian version on this PI1 B+ as you list. The situation is unchanged, it isn't working here like it used to. It is frustrating. Where should I look?...
by cacb
Mon Feb 16, 2015 6:13 pm
Forum: Automation, sensing and robotics
Topic: Temperature Probe Problem
Replies: 16
Views: 3624

Re: Temperature Probe Problem

For completeness: I am on a PI B+
I just did another
$sudo apt-get update
$sudo apt-get upgrade

I got another ~75MB of packages, including what appears to be a new boot loader.

But the DS18B20 sensors are still not showing up in /sys/bus/w1/devices
by cacb
Mon Feb 16, 2015 5:54 pm
Forum: Automation, sensing and robotics
Topic: Temperature Probe Problem
Replies: 16
Views: 3624

Re: Temperature Probe Problem

Are these problems occuring after an apt-get upgrade or after rpi-update? The DS18B20 on my B+ seems to be working ok with "dtoverlay=w1-gpio" in config.txt, after apt-get update/dist upgrade earlier today. I haven't run rpi-update for a while. My problem happened after just doing $ sudo apt-get up...
by cacb
Sun Feb 15, 2015 8:13 pm
Forum: Automation, sensing and robotics
Topic: Temperature Probe Problem
Replies: 16
Views: 3624

Re: Temperature Probe Problem

I am having the same issue with the same board post an OS upgrade. I have tried several variations on the: dtoverlay=w1-gpio-pullup Config.txt file fix with now avail. Although it seems to be working very well for others. (B+?) Mike, Is that what you did to get a reading (albeit an erroneous one)? ...
by cacb
Sun Feb 15, 2015 7:52 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 and 30-Jan firmware
Replies: 37
Views: 25807

Re: DS18B20 and 30-Jan firmware

Hi I was just about to post a longish explanation that I've read everything here and I am still unable to get my ds18b20 to work. Update: Please ignore, it does indeed work now. I am not sure what I changed, but suddenly it is normal. I did add dtoverlay=w1-gpio to /boot/config.txt Possibly I plugg...
by cacb
Wed Feb 11, 2015 11:01 am
Forum: General discussion
Topic: The Raspberry Pi 2 Q&A thread
Replies: 442
Views: 76920

Re: The Raspberry Pi 2 Q&A thread

@Shadow_7: Thank you, noted!
by cacb
Mon Feb 09, 2015 8:19 pm
Forum: General discussion
Topic: The Raspberry Pi 2 Q&A thread
Replies: 442
Views: 76920

Re: The Raspberry Pi 2 Q&A thread

DougieLawson wrote:Try adding -march=armv6 -march=armv5t as compiler options.
Thanks, noted. Will be getting a PI2. :)

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