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Category: MQTT

Posted on 7 January, 201822 December, 2022

RFXtrx433E, Node-RED, MQTT and Home Assistant

This post describes how I have setup an RFXtrx433E device with a Raspberry Pi to transform data from inexpensive 433 MHz motion- and climate-sensors into MQTT messages on my local…

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Posted on 2 April, 201719 April, 2017

Owntracks, Mosquitto and Home Assistant

OwnTracks is an open-source device tracker app for iOS and Android that lets you publish location data from your mobile phone. On the mobile app you can locate other connected…

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Posted on 26 March, 201730 October, 2017

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…

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Posted on 2 March, 201725 August, 2018

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…

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Posted on 7 February, 201719 February, 2017

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…

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Posted on 1 February, 201728 December, 2017

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…

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Posted on 3 December, 20167 January, 2018

A sensor monitor with OLED in MicroPython

I have different sensor nodes at home that publish measurements at regular intervals to a Raspberry Pi. The data is stored on the RPi and in a cloud service and can…

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Posted on 26 October, 20167 January, 2018

Radio chirp data incorporated in an MQTT environment

Internet-of-things does not require that every device has to be directly connected to the Internet. The complexity and possible security issues with every sensor having its own IP address would in…

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Latests posts by Lars

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