Articles

Low pass filter for Arduino/ESP8266/ESP32

A low pass filter written as class for Arduino code
Arduino

IoT pan-tilt platform

IoT pan-tilt platform thumbnail
With the COVID-19 pandemic, many of us cannot participate in family gatherings or other similar events in person. Instead, some opt for video-call applications like zoom, but then get constrained to the field of view of camera of the device used for the call.
ElectronicsIoTWIPMQTTProjects

IoT scale

IoT scale thumbnail
Keeping track of one's body weight usually involves manually writing down measurements on a spreadsheet or similar. To automate the process, I removed the electronics of a cheap scale, keeping only the load cells, and replaced it with my own.
ProjectsESP8266IoTElectronics

IoT Current consumption monitoring system

IoT Current consumption monitoring system thumbnail
When you don't know how much power your air conditioner draws, it's easy to leave it running without feeling too guilty. And then the electricity bill comes...
MQTTProjectsIoTNode.jsElectronics +1

Raspberry Pi based display board

Raspberry Pi based display board thumbnail
I recently started using Grafana to visualize my apartment data. Although I can easily open a browser tab to view the dashboard I created, I wanted to have a standalone display dedicated to the task that I could put on a shelf of my living room.
ElectronicsProjectsRaspberry PiGrafana

OpenProject in Kubernetes

OpenProject is an awesome project management application that can be installed on one's own server. This makes it ideal for users who want to keep control over their data. However, at the time of writing this article, OpenProject does not yet provide installation methods for Kubernetes so I decided to write my own manifest files.
OpenprojectKubernetes

IoT ceiling lights

IoT ceiling lights thumbnail
An IoT RGBW LED controlled via MQTT with integrated motion and illuminance sensor.
IoTWIPElectronicsProjectsMQTT +1

Encrypting Mosquitto using Certbot

This article presents how to encrypt a Mosquitto MQTT broker using SSL certificates obtained with Let's Encrypt
SecurityMQTTTutorials

DWC hydroponics system

DWC hydroponics system thumbnail
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.
FeaturedHydroponicsProjects3D printingElectronics +1

IoT sensor module

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Although a wide variety of sensing devices can be envisioned for home automation systems, motion and temperature sensors are among the most widespread. This is mostly due to their low cost and simplicity of use. In order to equip multiple rooms of my apartment with such sensors, I designed a simple IoT sensing module that can easily be produced in any quantity.
ESP8266ArduinoIoTElectronicsMQTT +1