Primitive webcam server using inetd and fswebcam

Hi all!

This weekend I was thinking how to make my webcam connected to OrangePI send a picture “on demand”. There are daemons (e.g. motion or webcam-mjpg) which do this but they capture images even when you are not watching and I wanted to avoid this. There are also projects (fswebcam) which are able to take single picture, save it to disk and end. I just needed to run it after http request and send back the image. Installing full webserver with some kind of interpreter (php, lua,…) seemed to me like an overkill. So I came to an idea to use inetd.

And this is how I did.

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Yet another IoT thermostat

Hi all,

this post will be about my homemade IoT thermostat.  The goal was to not install any cables (because I live in a rented flat), to go really cheap and to be able to set the temperature from anywhere. I’ll also give you some tips you should think about when building your own. Let’s get started.

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Example systemd unit config

/etc/systemd/system/my-service.service

[Unit]
Description=My super service
After=network.target

[Service]
ExecStart=/full/path
#Type=forking
#PIDFile=
Restart=always
User=root
Group=root
WorkingDirectory=/opt/service/
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=my-service
Environment=PATH=/bin

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable my-service

OrangePi: Installing Debian chroot into OpenELEC

Hi all,

I have an OrangePi running jernej’s OpenELEC build connected to my TV.  It works very well and stable, but on the other side, you can’t do much more with it because OE is very limited Linux distribution. This is a short guide how to run standard Debian services (nginx, samba, openvpn, … anything) in Debian chroot. Continue reading

CarWatch: My homemade car tracking platform

Hi all,cw-logo

few months ago, I was thinking about having my car tracked over GPS to make sure it is where I left it and to have some records how much I drive etc. There are commercial systems available for this but they cost some money and I wanted to have it customizable, under own control and to implement a few own ideas so I designed and implemented the system by myself. This is how CarWatch was born. Continue reading

Fixing non-working WiFi on RT5350

I have a favorite cheap chinese router based on RT5350 (running OpenWRT).

img_20160324_121441

Recently, I was wondering, why I can’t get WiFi on a few of them working. I have one piece running quite old (4xxx svn) OpenWRT where the WiFi works OK. So I tried to compile exactly the same version and install it on the non working piece. I also put the same wifi config there but nothing. It didn’t work. Continue reading