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Thingsmatic

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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 3 November, 201630 October, 2017

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…

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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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Posted on 7 October, 201610 January, 2018

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,…

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Posted on 7 September, 20164 January, 2017

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…

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Posted on 3 September, 20167 September, 2016

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,…

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Posted on 25 July, 201610 January, 2018

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…

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Posted on 10 July, 201610 January, 2018

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…

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Latests posts by Lars

  • Puzzling with React and Redux 29 July, 2021
  • GitHub Pages and GitHub Actions 28 July, 2021
  • Police events with maps and open data 14 February, 2021
  • Traffic information with OpenLayers and Angular 23 January, 2021
  • An audio streaming app with Angular and PrimeNG 9 January, 2021
  • Geolocation with Angular and .NET Core – part 3 4 February, 2020
  • Geolocation with Angular and .NET Core – part 2 4 February, 2020
  • Geolocation with Angular and .NET Core – part 1 26 January, 2020
  • Making a 2D platform game with Godot 3.0 17 February, 2018
  • RFXtrx433E, Node-RED, MQTT and Home Assistant 7 January, 2018
  • A memory game with React 6 January, 2018
  • A React app for Philips Hue lights 25 November, 2017
  • Philips Hue and Home Assistant 24 November, 2017
  • Home Assistant – notifications on iOS 10 November, 2017
  • Blynk, PlatformIO and ESP32 10 August, 2017
  • Using CH340 devices with OSX Sierra 7 August, 2017

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