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by dpenezic
Wed Mar 12, 2014 7:33 am
Forum: Automation, sensing and robotics
Topic: Source code to w1-therm?
Replies: 41
Views: 36696

Re: Source code to w1-therm?

Hi, it works for me :) ... first be sure you have latest raspbian distribution. sudo su - apt-get update apt-get upgrade then please read information on follow URL : http://elinux.org/RPi_Low-level_peripherals especially "General Purpose Input/Output (GPIO)" parts. Basically you need to un...
by dpenezic
Tue Mar 11, 2014 1:34 pm
Forum: Networking and servers
Topic: GitLab
Replies: 18
Views: 19849

Re: GitLab

Hi,

I use raspbian image from Raspberry Pi site without any aditional (non official) update. I did test steps from previous post in this thread, and everything was O.K. .

Regards,
Dubravko Penezic
by dpenezic
Sat Feb 15, 2014 10:17 pm
Forum: Troubleshooting
Topic: Raspberry B or not Raspberry B?
Replies: 15
Views: 2888

Re: Raspberry B or not Raspberry B?

Hi, unplug everything , even SD card, be sure SD card isnt read only, plug SD card and power micro USB only, wait couple of minute and observe PWR and ACT led . From your picture i saw you use HDMI to VGA adapter which may draw power from RPi, same is with USB conection cable (spouse that is Keyboar...
by dpenezic
Sat Feb 15, 2014 8:40 pm
Forum: Troubleshooting
Topic: Raspberry B or not Raspberry B?
Replies: 15
Views: 2888

Re: Raspberry B or not Raspberry B?

Hi,
may you send picture of RPi connection cable .
Regards,
Dubravko Penezic
by dpenezic
Tue Feb 11, 2014 7:11 pm
Forum: Deutsch
Topic: Polyfuse F3 austauschen
Replies: 10
Views: 3280

Re: Polyfuse F3 austauschen

1.1A fuse should have max 0,2 ohms... Should, but RPi doesn't. Way no one knows exactly. For example the new one bought yesterday (yes, i have few) have 0,8 ohms and work normal, of course my power supply have 5.34V (one of my product). If you like you may put new one with better specification, but...
by dpenezic
Tue Feb 11, 2014 12:32 pm
Forum: Deutsch
Topic: Polyfuse F3 austauschen
Replies: 10
Views: 3280

Re: Polyfuse F3 austauschen

HI, sorry for English, understanding German is relatively easy for me, but writing is something else :) . In your case i will suggest you to found power supply with 5.24V output. F3 is O.K. , bad characteristic come from bad selected parts, which is unfortunately standard case on most RPi. Also stan...
by dpenezic
Fri Feb 07, 2014 9:58 am
Forum: Troubleshooting
Topic: GPIO pins have 0v
Replies: 27
Views: 4082

Re: GPIO pins have 0v

Hi,
many thing may be issue, from you digital multimeter till RPi power supply . Does RPi working , any sign of LED activity ?

Regards,
Dubravko Penezic
by dpenezic
Wed Feb 05, 2014 6:47 am
Forum: Automation, sensing and robotics
Topic: homemade automation
Replies: 5
Views: 1324

Re: homemade automation

Hi,
nice to hear that your settings work :).

Unfortunately link to your picture dont work, so i dont see your current settings, however everything work, so we realy dont needed for fixing this issue.

Have a nice using of your RPi,
Regards,
Dubravko Penezic
by dpenezic
Tue Feb 04, 2014 8:55 am
Forum: Automation, sensing and robotics
Topic: homemade automation
Replies: 5
Views: 1324

Re: homemade automation

Hi,

please read http://www.raspberrypi.org/phpBB3/viewtopic.php?t=35155 .

Regards,
Dubravko Penezic
by dpenezic
Sun Feb 02, 2014 4:17 pm
Forum: Troubleshooting
Topic: DS18B20 logging suddenly stopped
Replies: 10
Views: 1997

Re: DS18B20 logging suddenly stopped

Hi,

connection is looking O.K. ... please try to connect your DS18B20 directly to RPi without PiPlate .

Regards,
Dubravko Penezic
by dpenezic
Sun Feb 02, 2014 2:07 pm
Forum: Troubleshooting
Topic: DS18B20 logging suddenly stopped
Replies: 10
Views: 1997

Re: DS18B20 logging suddenly stopped

Hi,
may you send picture of your wire connection ?

Regards,
Dubravko Penezic
by dpenezic
Sun Feb 02, 2014 10:30 am
Forum: Troubleshooting
Topic: DS18B20 logging suddenly stopped
Replies: 10
Views: 1997

Re: DS18B20 logging suddenly stopped

Hi, It is nice to hear that your RPi is working correctly :) . Your LED blink dont work if you start w1-gpio, because that kernel module start software support for 1-wireless master device, and that is O.K. . Do you use RPi camera board ? or any other I2C devices ? Did you try with just one DS18B20 ...
by dpenezic
Sat Feb 01, 2014 10:04 pm
Forum: Troubleshooting
Topic: DS18B20 logging suddenly stopped
Replies: 10
Views: 1997

Re: DS18B20 logging suddenly stopped

Hi,

Which version of kernel you use ? From some version you may use any available GPIO pin for 1-wire master input.

Try to restart RPi, and remove w1-gpio and w1-therm module, then try to use LED for blink testing.

Regards,
Dubravko Penezic
by dpenezic
Tue Jan 28, 2014 8:16 am
Forum: HATs and other add-ons
Topic: RTC
Replies: 34
Views: 29816

Re: RTC

Hi all, i must said i didnt read all post in this thread carefully, but i have one practice notice. First DS1307Z isnt good enough for RTC functionality on long run (error is to "big") instead I suggest to use DS3231. In both case use CR2032 battery. Finally it works for me on few places w...
by dpenezic
Mon Jan 27, 2014 9:11 pm
Forum: Teaching and learning resources
Topic: Raspberry Pi for science experiments?
Replies: 1
Views: 2313

Re: Raspberry Pi for science experiments?

Hi,
interesting tutorial, I have only one suggestion.
Instead of using RRDTools, store date in file/SQLite/MySQL database and visualization data using Highgraph.js .

RRDTool lost date by definition, and many time it is nice to have data like was collected.

Regards,
Dubravko Penezic
by dpenezic
Wed Jan 15, 2014 6:12 am
Forum: Troubleshooting
Topic: Have I killed GPIO pin 4?
Replies: 9
Views: 2292

Re: Have I killed GPIO pin 4?

Hi Pete, your picture show possible cause of issue :) ... like i said many times , picture have value of 1000 words ;) . Pleas, remove RTC module (which is I2C), comment I2C kernel module and try again. Regards, Dubravko Penezic Hi Folks Thanks for your observations. No time recently to do further t...
by dpenezic
Mon Jan 13, 2014 6:03 am
Forum: Troubleshooting
Topic: Have I killed GPIO pin 4?
Replies: 9
Views: 2292

Re: Have I killed GPIO pin 4?

Hi, like people said many times, it works for me, on many different devices :) ... how ever i suggest to you to send picture of your wire connection for beginning. That is first and 90% of all errors come from wrong connection. Second it will be nice to know which operating system you run on your RP...
by dpenezic
Sat Jan 11, 2014 10:55 pm
Forum: Troubleshooting
Topic: Have I killed GPIO pin 4?
Replies: 9
Views: 2292

Re: Have I killed GPIO pin 4?

Hi, please provide picture of your connection. Did you execute follow command before read temperature : sudo modprobe w1-gpio && sudo modprobe w1_therm Regards, Dubravko Penezic I acquired a model B from ModMy Pi in November, running the NOOBS distro on the RPi 8GB SD card. It all ran fine o...
by dpenezic
Sat Jan 11, 2014 6:01 pm
Forum: Networking and servers
Topic: GitLab
Replies: 18
Views: 19849

Re: GitLab

Hi, thanks for information, and nice step-by-step tutorial. Some time ago i add to my list to upgrade to latest version of GitLab on my RPi. Right now i will do that :). Regards, Dubravko Penezic By following most of user dpenezic's instruction I installed the current stable version of Gitlab (6.4) ...
by dpenezic
Sat Jan 11, 2014 1:26 pm
Forum: Automation, sensing and robotics
Topic: DS18b20 too hot
Replies: 6
Views: 6035

Re: DS18b20 too hot

Hi, usually DS18B20 get hot if you miss-configure GND and Power ... like @rpdom said no picture is available to check your connection, and resistor need to be 4K7 at least. Regards, Dubravko Penezic Hey. I have some problems with my temperature sensor. It gets really hot after dome seconds when boot...
by dpenezic
Fri Jan 10, 2014 8:29 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 Issues
Replies: 15
Views: 4305

Re: DS18B20 Issues

Hi, reading temperature from sensor is describe in URL http://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/ds18b20 Depends of language you use in your project, you may use any system function/procedure which call system shell command, or just read file. Hope that h...
by dpenezic
Fri Jan 10, 2014 8:49 am
Forum: General discussion
Topic: Is Raspberry Pi a good fit for this project?
Replies: 3
Views: 853

Re: Is Raspberry Pi a good fit for this project?

Hi, not only wireless, you must count on slow RPi response, syslog use UDP packages, so you must count that some package may be lost . In your place i will look on RPi like very small, low performance server. For example, i run on one of my RPi GitLab, which is slow but work even if i am only user o...
by dpenezic
Fri Jan 10, 2014 7:57 am
Forum: General discussion
Topic: Is Raspberry Pi a good fit for this project?
Replies: 3
Views: 853

Re: Is Raspberry Pi a good fit for this project?

Hi, simple answer is yes, however you must all the time count on "slow" and "low" level traffic. For logging you will need category 10 SD card. Regards, Dubravko Penezic I'm very new to Pi and have done quite a bit of poking around on google seeking these answers, and I think I'm...
by dpenezic
Fri Jan 10, 2014 7:52 am
Forum: General programming discussion
Topic: SERIAL COMMUNICATION PROBLEM
Replies: 3
Views: 1018

Re: SERIAL COMMUNICATION PROBLEM

Hi, maybe I know :) ... did you set same parameters on PC and RPi connected to speed, data correction, and word length in bits ? Please read http://elinux.org/RPi_Serial_Connection for more info. Regards, Dubravko Penezic I have tried to transmit and receive data serially using the Tx and Rx pins of...
by dpenezic
Fri Jan 10, 2014 7:47 am
Forum: Beginners
Topic: Online energy monitoring
Replies: 2
Views: 687

Re: Online energy monitoring

Hi, from your message isnt clear what help you need. What type of program, what display module you use or plane to use , etc. ? Little more information will help other people to help you or point you to place where you may found a help. Regards, Dubravko Penezic Actually I 'm stuck with my final sem...

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