1 Technophile

In this article I’m going to detail how to integrate the  OpenMQTTGateway  with OpenHAB using MQTT protocol. We will explore two kind of integration : -a cheap socket wall switch (on/off) -a voltage sensor ( values between 0 to 5000mV) based on this tutorial Before continuing you must have : ·          An MQTT broker running (for example mosquitto) ·          An OpenHAB instance running with the MQTT addon binding configured to talk to your MQTT broker ·          The 433mhz Gateway setup (either arduino or esp8266 one) Cheap wall socket The wall socket that we will be using are these ones Be carefull not all the wall sockets are compatible with RCSwitch (Library used by the 433Mhz Gateway). For example blyss ones are not compatible. Learning the codes of your plug First step will be to learn the code that are used by ...

Since several months I worked on setting up an home automation system for my house. The goal was to have an open system, with an important part of DIY work and second hand components so as to satisfy my curiosity about these new technologies. In this first article I will expose the architecture of the system , the bill of material and the software involved. These devices are maybe not compliant with your country regulations and norms, it is your responsability to verify this compliance. Bill of material: 3 * 433Mhz presence sensor 5€ = 15€ 3 * 433Mhz door sensor 4€ = 12€ 1 * 433Mhz smoke detector  8€ = 8€ 1 * arduino UNO clone = 5€ 1 * arduino ethernet shield W5100 = 6€ 1 * raspberry pi 2 or 3 = 40€ 1 * sdcard 8gb = 5€ 1 * 433Mhz receiver and  1 * 433Mhz transmitter   = 1.50€ 1 * siren 3€ 1 * 9V wall transformer (second hand) 1€ 1 * kit of 3 switch plug = 20€ 1 * DHT11 temperature sensor = 1.50€ 1 * old computer speakers = 5€ Leds and resistors <3€...