Usually, you want to cluster your Proxmox containers and VMs in subnets that are different from your real local area network, e.g. because some services should only be accessible inside of Proxmox. But after initial installation, Proxmox has one network bridge interface called “vmbr0”. It provides a virtual switch which connects all VMs and containersContinue reading “Proxmox: Configure a network bridge for internal networking”
Author Archives: nicolas
On energy consumption of different wireless protocols and modulations
Introduction As time moves on, more and more wireless communication protocols and modulations are being developed. They all have their own area of application and some suit certain applications more than others. In this post, we want to look at different factors that influence energy consumption of some of the widely used protocols. Particularly, weContinue reading “On energy consumption of different wireless protocols and modulations”
Wireless Communication Technologies for IoT Projects
Exploring Wi-Fi, Bluetooth, Zigbee, and LoRa Introduction In the realm of embedded systems, Arduino, Raspberry Pi, and the Internet of Things (IoT) have revolutionized the way we interact with our surroundings. With a plethora of sensors and devices at our disposal, it’s crucial to understand the various wireless communication technologies available for IoT projects. InContinue reading “Wireless Communication Technologies for IoT Projects”
What is IoT?
IoT is short for Internet of Things. Internet is the worldwide electronic network connecting computers that we all know, but also people and society. And “things” in this case, are products or objects from everyday life, that get “augmented” by adding some form of smartness to them using a microcontroller and network connectivity. IoT devicesContinue reading “What is IoT?”
Telegraf, InfluxDB, Grafana with docker-compose
Docker is a great and easy way to run software in containers. Docker compose is a nice extension which allows to run whole systems composed of multiple containers in one command. This post shows you how you can set up a so-called “TIG” stack consisting of the open-source tools Step 0: Install Docker If youContinue reading “Telegraf, InfluxDB, Grafana with docker-compose”
What is Docker? How does it work?
In short: Docker is a platform and toolkit to develop applications that consist of multiple small containerized components that can be started, updated and replicated independently from each other. How it came to be Factor 1 – Monoliths are hard to handle Humans develop software since the early days of computers. Programming languages have evolvedContinue reading “What is Docker? How does it work?”
Headless setup of a Raspberry Pi 4 on macOS
This post explains how to setup a current Raspberry Pi 4 with the most recent version of Raspberry Pi OS (most recent = at the time of writing: January 2022). Some details can also be found on the official website. Step 1: Download the image For Raspberry Pi 4, if you want to install theContinue reading “Headless setup of a Raspberry Pi 4 on macOS”
720×720 LCD screen using DPI on Raspberry Pi 4
Some weeks ago, I bought a 4inch square LCD screen with 720×720 pixels from Waveshare. However, they did not provide any documentation at all for this specific display, but there was more than enough documentation for all the other displays, e.g. this rectangular one. Thus, I decided to document here how to get this displayContinue reading “720×720 LCD screen using DPI on Raspberry Pi 4”
WS2812B vs. WS28123 – Determine the type of LED strips
There are many different types of LED strips out there. What type do you have? This post gives you hints on how to determine this. LED types These are the types of SMD LED components that you might find on LED strips: 3528: single color, non-addressable, very low power 2835: single color, newer than 3528,Continue reading “WS2812B vs. WS28123 – Determine the type of LED strips”
What platform should I use for my IoT project?
There is a large choice of platforms, embedded microcontrollers and breakout boards available for prototyping your projects. I want to show you some aspects, that might help you to device what platform you should choose. First of all, answer the following questions for yourself: Do I need WiFi connection, or is some other wireless technologyContinue reading “What platform should I use for my IoT project?”