Full-stack development and software architecture
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…
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…
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…
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…
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…
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…
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…
In this post I will show how I have used a Raspberry Pi as a relay server that can be controlled via a web app on e.g. a mobile phone or…
Thingsmatic 