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…
Preparing the remote control app for Christmas
Winter is soon to arrive in Sweden and the amount of daylight is decreasing every day. Thus it’s time to set up some extra light sources indoors and outdoors. I…
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…
Processing and Arduino
Processing is an open-source IDE with a Java-based programming language that is aimed at lowering the learning threshold for interactive graphics creation. It can be used for teaching programming, making prototypes,…
MicroPython and ESP8266
During the past 6 months I have grown into a big fan of the Python programming language. I have also found a new passion in tinkering with the versatile and…
Basic authentication with Python Flask
For a simple web application in a home automation scenario, basic authentication can be a sufficient solution. Setting up a REST API and a web app with Flask is very easy,…
A low energy open door detector with radio signals and MQTT
This blog post describes how I have set up a door-open detector at home. It uses a small ATtiny85 board that broadcasts a 433 MHz signal every time the door…
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…
