A web app for IoT data visualization
As described in some earlier posts, I have a setup at home with IoT devices that publish measurement messages to a Raspberry Pi via MQTT. The RPi stores the data in…
Author: Lars
A self-hosted MQTT environment for Internet of Things – Part 3
In the last post in this series, I will add persisting of sensor data to a database. I will also use an additional subscriber as a proxy for sending the…
A self-hosted MQTT environment for Internet of Things – Part 2
In the second post in this series, I will setup two ESP8266 microcontrollers with MQTT publishing through a Raspberry Pi-hosted Mosquitto broker. The idea is that the microcontrollers will send…
A self-hosted MQTT environment for Internet of Things – Part 1
MQTT (MQ Telemetry Protocol) is a lightweight machine-to-machine communication protocol that works on top of TCP/IP and it is very much suited for usage in an Internet-of-Things scenario. MQTT uses the publish-subscribe pattern…
Daemonize that Python script!
This post builds on a previous experiment where I made a remote control app for my outlets with a Raspberry Pi, Python/Flask and AngularJS. For the backend to be really useful,…
Adding some security to Raspberry Pi – part 1
My Raspberry Pi has turned into a central hub for automation and connections to various devices at home. As I want to expose some services outside of the local LAN,…
RCSwitch revisited – control RC outlets with a web app
In two previous posts, I used the RCSwitch and pi-switch libraries for communication between an Arduino Uno and a Raspberry Pi. I touched briefly on the main purpose with these libraries…
Exploring Adafruit IO
Adafruit hosts a cloud service, io.adafruit.com, where you can upload data from your devices and also subscribe to data from other devices. The service is currently in beta, but you…
Thingsmatic 