Monitoring temperatures with Apache Camel

Intro I've been trying out various technologies for my temperature monitoring project, but all of them have been more or less unstable. The python solution is by far the most robust, but can lose connection to the MQTT broker, and stubbornly refuse to reconnect by itself. The Node-RED solution is, while fast to write, notoriously unstable regarding MQTT connections. Connections sit "idle" showing a connected state, while in [Read More]

Temperature monitoring with Node-RED

I originally wrote my temperature monitoring software using Python, and while my Python solution works (almost) flawlessly, I recently became aware of Node-RED, a project initiated at IBM, meant as a controller for the Internet of things. When i read about Node-RED i wanted to try it out, so i decided to port my temperature/surveillance monitoring solution from python to Node-RED, and while i'm not much of a JavaScript [Read More]

Monitoring temperatures with a Raspberry Pi.

I recently got into a discussion about dogs, kennels and temeratures. I have a German Shepherd, and he has a nice insulated dog house in his kennel, and the discussion was along the lines, how much heat does it take to warm up the doghouse, if it gets hotter than the outside at all. Now, a normal person would have solved this by putting a wireless meat thermometer in the [Read More]

Sending notifications with MQTT and

I've improved a bit on my setup, described in this previous article. I started using MQTT, namely the Mosquitto broker for sending data to/from my machines, instead of the old point-to-point setup i was using. MQTT provides publish/subscribe, with messages up to 256MB each. It also features QoS, ranging from 0 - which basically just means the message was sent on the network, to 2, where [Read More]