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Category: C++

Posted on 10 August, 201710 August, 2017

Blynk, PlatformIO and ESP32

Blynk is an IoT-platform that consists of a Blynk server, custom projects within an iOS/Android mobile app and custom hardware IoT-nodes (Arduinos etc) using a Blynk library. The mobile app…

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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 24 June, 201610 January, 2018

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…

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Posted on 11 April, 201610 January, 2018

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…

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Posted on 27 March, 201610 January, 2018

Meet the Huzzah!

ESP8266 is a very popular and inexpensive WiFi-chip that can be a real contributor for taking small gadgets to the Internet. This post describes my first experiments with an Adafruit…

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Posted on 26 March, 201615 December, 2016

A Lego robot car with Arduino and servo motors

With an Arduino and some servos lying around, I find it hard not to try out something robot-like. An obstacle-avoiding mini car is probably one of the easiest projects to…

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Posted on 20 March, 201630 October, 2017

Arduino to Raspberry wireless communication – some improvements

In my previous post, I experimented with sending measurements values from an Arduino UNO to a Raspberry Pi via a 433 MHz radio protocol. After testing the setup for a…

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Posted on 16 March, 201630 October, 2017

Major Tom to Ground Control – simple radio communication between Arduino and Raspberry

The Arduino computers are excellent for reading sensor data, and they are so inexpensive and consume very little power that you can use plenty of them in your home without…

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Latests posts by Lars

  • Puzzling with React and Redux 29 July, 2021
  • GitHub Pages and GitHub Actions 28 July, 2021
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  • 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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