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The Sensor433 library and Geeetech transmitters and receivers
As I use 433MHz transmitters for sending sensor data from many of my IoT-nodes, I have made a re-usable Arduino library for this purpose. The transmitted sensor data is picked up by one single receiver (an ESP8266 board) that converts the values to MQTT messages on my local network. In this post I will describe…
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Setting up a Raspberry Pi as a Minecraft server
My kids are occasional Minecraft addicts. As I want to support their creative activities, I have setup a Minecraft server at home so they can collaborate with friends on their construction endeavours. The system we use is a Raspberry Pi 3 with a Spigot Minecraft server. A few weeks ago I had an SD-card corruption so…
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InfluxDB and Grafana for sensor time series
I’ve started using InfluxDB for storing my sensor data as time series. The main reason for this is that it allows me to use Grafana for analyzing the data. This blog post is an introduction to my setup with these tools on a Raspberry Pi.
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Home Assistant – integrating RESTful switches
I have started integrating my IoT-devices and services with the Home Assistant platform. See my previous post for details on getting started with Home Assistant and subscribing to MQTT messages: Home Assistant – getting started and using MQTT sensors My next attempt is to configure RESTful switches in HA for interacting with an existing web…
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Home Assistant – getting started and using MQTT sensors
I’ve been searching for an easy-to-get-started home automation platform that can be extended and customized as my needs grow. After struggling with OpenHAB, Domoticz and Freedomotic, I’ve found Home Assistant to be a much better fit for me. My main requirements are that the system should be open-source, have good tutorials & documentation, work well…
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Monitoring CPU temperatures on a Raspberry Pi with MQTT
Recently I’ve had problems with my Raspberry Pi 3 overheating though I use a heat sink for the processor and have a very modest load on the machine. When the RPi is in this state, it shows a thermometer warning icon and it is not possible to login. As I can not access the machine, it…
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