Articles
Home automation
Few would argue that having lights turned on in a room without occupant is a waste of electricity. Ideally, lights and other appliances like air conditioners would only be turned on when someone is around. This project is a NodeJS application that gathers data about the occupancy of an apartment and manages appliances accordingly.
LAMP
This tutorial explains how to setup a Linux, Apache, MariaDB, PHP (LAMP), server.
SONOFF Firmware
<a href="https://www.itead.cc/" rel="noopener noreferrer nofollow">ITEAD</a>'s <a href="https://sonoff.itead.cc/en/" rel="noopener noreferrer nofollow">SONOFF</a>s are Wi-Fi enabled relays that can be used to turn applicances on and off remotely.
Fingerprint scanner briefcase
This briefcase is fitted with an electronic lock and a fingerprint reader so as to be unlocked with a simple touch. It also features a bluetooth module, which enables unlocking using a smartphone or computer.
Control IoT devices with a Xiaomi Mi Band 2
Smartwatches can be rather expensive and tend to be known for their poor battery life. On the other hand, Xiaomi's Mi band 2 is cheap and its battery lasts for up to 20 days. However, the Mi band 2 is mainly limited to fitness tracking functions, at least without the appropriate apps.
Bathroom occupancy monitor
One of the companies I used to work for had a serious bathroom issue: My floor had only three toilet stalls for about 200 employees. There were countless times when I would walk all the way to the bathroom only to find all stalls occupied. I built this simple system to quickly identify whether one or more stall were. It consists of an IoT sensor installed on the bathroom stalls' door and an indicator placed somewhere easily visible.
CSS basics
HTML defines the content of a web page but not its aesthetics. Styling a document is achieved using CSS, which stands for Cascading Style Sheet and is another language that web browsers can interpret.
HTML basics
HTML stands for HyperText Markup Language. It is used to describe the content of a webpage to web browsers. Originally, web browsers were designed to display text documents and so HTML was used to define the various parts making up those documents.
Inheritance in Python
Let's imagine that we have a python class as follows (Python 3):
Network basics
When data needs to be exchanged between several computers, those need to be connected to each other, i.e. forming a network.