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I am not much of a cook so salads are usually one of my favorite options for a healthy meal. So, just like for everything else, I started wondering if I could make my own. However, I don't have access to a garden so I started looking into solutions to grow vegetables indoors. I settled for hydroponics, which seemed to provide a good balance between yield and operational hassle. Specifically, I went for a Deep Water Culture type of hydroponic system as it is usually considered easy for beginners to setup.

Web applications commonly require a user database and the management logic for it. Having to build such software infrastructure for each individual app would be time consuming so I designed a general-purpose user management microservice that can be easily integrated in a project.

I've been using&nbsp;<a href="https://www.home-assistant.io/" rel="noopener noreferrer nofollow">Home Assistant</a>&nbsp;to control my home IoT devices for a while. Although it fulfills all my needs, I wanted to make my own system so as to get a fully customized smart home control panel and learn how to build such an application in the process.

This is a wireless motion sensor that runs on rechargeable batteries. It can be deployed anywhere and sends a signal using an NRF24L01 wirless module whenever it detects motion.

The other day, I found myself putting on some weight. This rather surprised me as I thought I was having a healthy diet and exercised almost daily. To identify the root of the problem, I decided to start measuring my calorie intake as well as the macronutrients that constitute said intake.

Mounting a USB dock to the back of my laptop stand using 3D printed parts designed in FreeCAD.

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.

More often than not, web applications require restrictions regarding who can access the content that they serve. This involves an user management and authentication system, which, if designed inappropriately, can lead to security concerns. However, the development of such system can be time consuming, especially if done repeatedly for multiple applications.

IP cameras are cheaper than ever and with the ESP32-CAM boards it is now possible to stream video for less than USD 10. However, IP cameras are commonly either only accessible from within their network, or use servers from third party companies to allow users to see the video feed from anywhere in the world. As both scenarios are inconvenient, I decided to create a camera viewer application that can proxy the video feed to a web interface.

Many companies rely on spreadsheets to keep track of their fixed assets. However, spreadsheets are commonly designed to be edited manually, which makes automation difficult.