ATtiny85 mailbox sensor

The postman always rings twice. Well, in my world he doesn't ring at all. That's why I created this little device that tells me when the postman has delivered my snail mail. I would like this device to be small enough to fasten in the mailbox lid (in Norway most outside mail boxes have a top lid that swings upwards).

Moteino freezer monitor

I bought four ER14505 LS14500 AA 3.6V 2400mAh lithium batteries and battery holders for PCB and thought I should use the rest of my Moteinos. I had three of them laying around that I don't use.

For this project I use the same code as my other sensors around the house, so the only job was to get it on a vero board, solder and box it. Since the LS14500 battery works down to -40 degrees Celsius, it will do just fine in the deep freezer.

Domotiga on Raspberry Pi 2

I have been running Domotiga on the new Raspberry Pi 2 for a few weeks now after the initial months using the "old" Raspberry Pi. And I have to say the performance is very noticeable. I'm controlling Domotiga with the desktop client using VNC. I also control Domotiga with the web interface, but I find it faster to use VNC. Compared to the "old" Raspberry Pi, the response is almost instant, and the CPU usage is never over 25% compared to the the "old" one that used 100% every time Domotiga had work to do. That's the beauty of quad core CPU.

X10 PIR sensor for RFXCOM transceiver

After a lot of experimentation, research and prototyping, I finally have all the parts I need to finish my PIR sensors. I plan to have one in each room, well almost.

They will have two functions. Primarily they will be used to track us and switch lights and heating (Nexa remote switches) as appropriate when we are home. The switching will follow certain rules, like time of day, who is home, weekday, weekend etc. When no one is home, they will be part of the security system and notify us, using Pushbullet, if they sense movement while we are not home. Both functions will be controlled by DomotiGa running on a Raspberry Pi, using a RFXCOM rfxtrx433e USB transceiver.

DomotiGa - First impressions

DomotiGa is written in Basic, more precisely Gambas. There comes the name DomotiGa in. Gambas is a Visual Basic look-alike for Linux. 

Since I run DomotiGa on a Raspberry Pi to which I connect using VNC I don't get the "full experience" of how the desktop interface looks like. The fonts are very small, and due to the fact that Raspberry Pi's desktop don't exactly look great, I have to accept how it looks. Hey, I'm only using DomotiGa's desktop client to set it up and forget it. You may also install the Domotiyii web interface to control and set up DomotiGa, but this lack some of the features found in the desktop client. 


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