Go to advanced search

by tupf
Thu May 02, 2013 6:45 pm
Forum: Automation, sensing and robotics
Topic: Build a webserver for home automation on RPi
Replies: 5
Views: 12725

Re: Build a webserver for home automation on RPi

Hi,

if you work goal oriented, it does not matter which one you pick. python, perl or php all do the job.

Good Luck,

Tupf
by tupf
Sat Mar 02, 2013 11:18 pm
Forum: General discussion
Topic: ground loop with cheap power supply
Replies: 4
Views: 1743

Re: ground loop with cheap power supply

the pi gets its power directly from a usb power supply over usb. I even tried another (cheap) power supply and I get a similar result. I dont use an self designed power supply, I use commercial ones. I know that the probes pick up the 50Hz radiation from the wall wires and outlets. I was not just ho...
by tupf
Sat Mar 02, 2013 10:52 pm
Forum: General discussion
Topic: ground loop with cheap power supply
Replies: 4
Views: 1743

ground loop with cheap power supply

Hi, currently I am working on a audio signal analyser for my pi. I created a circuit which is recording a short audio signal, and the pi is analysing it. I noticed that my signal's wav contains a humming noise, so I looked at a recorded audio signal. There were peaks every 20ms, so it seemed I got a...
by tupf
Thu Feb 21, 2013 11:05 pm
Forum: General discussion
Topic: data loss after "sudo halt"
Replies: 9
Views: 2748

Re: data loss after "sudo halt"

Hi,

I tried

Code: Select all

sudo su
sync
shutdown -h now
and it picked up my last changes. I will try from now on only this.

Thanks for the hints.
by tupf
Thu Feb 21, 2013 2:35 pm
Forum: General discussion
Topic: data loss after "sudo halt"
Replies: 9
Views: 2748

Re: data loss after "sudo halt"

Hi,

I use a SAMSUNG MB-SS8GA class 6 card.

No overclocking.
by tupf
Thu Feb 21, 2013 2:14 pm
Forum: General discussion
Topic: data loss after "sudo halt"
Replies: 9
Views: 2748

data loss after "sudo halt"

Hi, I am using the image below, I can see that sometimes it happens that the data, which I created on the raspberry pi, gets lost after "sudo halt", or "sudo reboot.". I also did a "sync" before that, but did not help (or does not always help). 2012-12-16-wheezy-raspbian.img Any idea, how I could ov...
by tupf
Tue Feb 19, 2013 3:44 pm
Forum: Automation, sensing and robotics
Topic: CAN for home automation
Replies: 4
Views: 4553

Re: CAN for home automation

I was not aware that there is such a menu item during first boot:

'Expand Root Partition to Fill SD Card'

Next time I will pay attention during the first boot. In case you have not done it, you can do it the way I described here. Although I dont think it is really complicated.
by tupf
Fri Feb 01, 2013 8:10 pm
Forum: Automation, sensing and robotics
Topic: Controlling Motors
Replies: 2
Views: 814

Re: Controlling Motors

use a motor driver, such as the L298 from ST. Not sure about the power supply and voltage level to drive it. You need to check ...
by tupf
Tue Jan 29, 2013 11:11 pm
Forum: Automation, sensing and robotics
Topic: CAN for home automation
Replies: 4
Views: 4553

CAN for home automation

Hi, I have installed two ventilators, several temperature sensors and one humidity sensor in my basement. I also installed one humidity sensor outside of my house. The humidity sensors actually measure the relative humidity, but the sensors translate the values into absolute humidity by doing some m...
by tupf
Sat Dec 08, 2012 5:24 pm
Forum: Beginners
Topic: Installation Guide for motion detection with webcam
Replies: 29
Views: 240223

Re: Installation Guide for motion detection with webcam

Thanks Dee.

about the vnc viewer. Just google for vncviewer you will find many download sites. You will need to install on your windows laptop.

about the motion.conf, looks like it is a typo. It should be target_dir ... and not get_dir. Thanks for pointing it out.

Tupf.
by tupf
Wed Oct 10, 2012 6:55 pm
Forum: Beginners
Topic: Installation Guide for motion detection with webcam
Replies: 29
Views: 240223

Re: Installation Guide for motion detection with webcam

One more thing: I had the problem that jpg and swf files from motion added up about 100M of space every day, so I want to delete old files automatically. I solved this by adding the entries below in the crontab file and it works fine: sudo su cd /etc emacs crontab append the entries below 0 12 * * *...
by tupf
Sun Oct 07, 2012 7:47 am
Forum: Beginners
Topic: Installation Guide for motion detection with webcam
Replies: 29
Views: 240223

Re: Installation Guide for motion detection with webcam

sure I could stretch the partition. Probably there are many ways. I just showed one way which works for me and I am happy with it. I added a cronjob to delete old files in /data/webcam/motion if the the size becomes too large. I am testing this out now, and will update after I see it works. The qual...
by tupf
Sat Oct 06, 2012 7:54 am
Forum: Beginners
Topic: Installation Guide for motion detection with webcam
Replies: 29
Views: 240223

Re: Installation Guide for motion detection with webcam

I need to include something here, because I figured that the SD becomes full pretty fast. So I recommend to add another partition, right after Editor (Emacs) . Since I used a 8GB SD card, there is plenty space: Add another partition Ref.: http://elinux.org/RPi_Easy_SD_Card_Setup The wheezy version I...
by tupf
Mon Sep 24, 2012 3:52 pm
Forum: Beginners
Topic: Installation Guide for motion detection with webcam
Replies: 29
Views: 240223

Installation Guide for motion detection with webcam

Hi, here an installation guide for motion detection with webcam and wifi. I put it in here for now. Let me know if there are better places . Tupf. Needed HW Lenovo W500 (or other HW to programm your SD card) Raspberry Pi HDMI cable, ethernet cable, usb mouse and keyboard power supply with mini usb (...

Go to advanced search