This project took me a year to finish but finally it’s done. What I wanted is to build an automatic IoT sprinkler controller from cheap parts. This is my story.
If you are interrested in security devices this post may be for you. Recently I’ve found a software which makes a GPG security device out of a STM32. It’s called Gnuk. You just need a compatible board, programmer, flash the firmware and you are ready to go. I was just hoping to find some cheap device to flash to play with it.
Last days I’ve been experimenting with various features of OPI. One thing I’ve always been interested in is HW encoding. There is some information on linux sunxi wiki on this topic ( ), which say that it’s not something straightforward and opensource.
Last week I’ve got the new version of Lenkeng HDMI extender – LKV373A. This version states incompatibility with previous version and usage of new HDbitT protocol so I was wondering what did Chinese engineers invent this time.
This blog is a log of my findings as they went through time. If you want a short review of the device watch this video from OpenTechLab (thank you!):
If you want to know more, just read the blog. Continue reading New version of Lenkeng HDMI over IP extender – LKV373A (Update 20. oct 2017)
IP multicast is an interesting technology. It’s main purpose is to
save network bandwidth as much as possible – traffic is sent to hosts
which asked for it only (as opposed to broadcast). On the other
side, you need smarter (manageable) switches and separate and
non-trivial configuration on both routers and switches. Even more
complicated it is when you try to make it work over VPN. Continue reading Multicast over “stupid” networks
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.
since I found, that Debian chroot on OpenELEC is not the best solution, I tried to do it vice-versa. This is what I needed to do.
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 CarWatch: My homemade car tracking platform
I have a favorite cheap chinese router based on RT5350 (running OpenWRT).
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 Fixing non-working WiFi on RT5350