BlocNotes

I just picked up a mini PC (Fujitsu Q5030) and tried to install Linux on it but the CD reader is not to be reliable. So I used the boot over Ethernet function. As my DHCP server is on the modem of my internet provider, I had to plug directly the computer into my laptop and setup a PXE server.

As a part of my future home automation called NoteRF, I need some devices other than a Raspberry Pi grabbing weather and pollution data from the internet: I designed a PCB and throw some lines of code on it.
Currently, the devices are only sensors, but I plan to implement some actuators later. Everything communicates wirelessly with the help of HopeRF RFM69hw, I will write something on the PCB and publish them as soon as I have the time to do some minor corrections to the Eagle files.

I am currently evaluating some solutions to build my home automation system. As a part of this system I want to monitor air quality, but, I do not have any sensor yet, so I use a public service and parse its data with Node-RED.

I am using a lot of web services on several servers, and I was bored to remember all ports and change my firewall rules each time. So I use HAProxy to redirect all incoming HTPP traffic to the right server/port by checking the requested URL.

Moreover, I configured it as an SSL endpoint, so every communication between a browser and HAProxy is encrypted, even if the service I am using is not able to support it. The other pro of this solution is to be able to use basic HTTP authentication whenever I want to restrict access to some services.

I wanted to use sleep functions of the Atmega328 (in power-down mode), in conjunction with Arduino’s software serial library: it turns out that all interrupt vectors are enabled in sleep mode.