Control Raspberry Pi Robots via Infrared Remote Control (Part 3)
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Control Raspberry Pi Robots via Infrared Remote Control (Part 3)

Felix - 21. October 2020

After our robot has already learned to drive and to follow a line, we now want to let it be controlled remotely. For this, we will first use an infrared remote control and later possibly an Xbox 360 controller. In addition to controlling the driving ability, the modes (follow line, autopilot, etc.) should also be […]

Build Your Own Raspberry Pi Weather Station with OpenHAB 2
Home Automation, Projects
Home Automation, Projects

Build Your Own Raspberry Pi Weather Station with OpenHAB 2

Felix - 16. July 2020

One of the most popular projects besides home automation and robots is the Raspberry Pi weather station. This can be used in both indoor and outdoor circumstances and can be expanded as required. We either display the data from other devices via a web interface or use the Raspberry Pi touchscreen. In this tutorial, we […]

Raspberry Pi GPIO Explanation for Beginners + Programming (Part 2)
First Steps, Hardware & GPIO
First Steps, Hardware & GPIO

Raspberry Pi GPIO Explanation for Beginners + Programming (Part 2)

Felix - 28. May 2020

One of the special features of the Raspberry Pi is the programmable input-output pins. These so-called GPIOs can easily be switched via a program, which we will go through in this tutorial. For this we will write a Python program, on the one hand, we record inputs and on the other hand, we switch the […]

Learn How to Program on the Raspberry Pi – Part 1: Introduction
First Steps
First Steps

Learn How to Program on the Raspberry Pi – Part 1: Introduction

Felix - 9. May 2020

Many (absolute) beginners get a Raspberry Pi as a gift, but have often little or no programming knowledge. Therefore I would like to clear that hurdle in this series of tutorials and encourage learning to program with the Raspberry Pi. The big advantage is that we can also write a hardware-related code, which allows us […]

Reading Out Raspberry Pi RFID RC522 Tags (NFC)
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Reading Out Raspberry Pi RFID RC522 Tags (NFC)

Felix - 26. March 2020

RFID is a technology whereby data is transmitted without touch, which is used in chip cards. Access cards can be read out with a Raspberry Pi RFID module (RC522) and thus e.g. access to doors or locks can be given. Current smartphones have similar ones. In this tutorial, I will show how to read RFID […]

Log Raspberry Pi sensor data with ThingSpeak and analyze it
Software
Software

Log Raspberry Pi sensor data with ThingSpeak and analyze it

Felix - 22. June 2019

Frequently, a lot of data is generated in projects that run around the clock. One way to store them permanently is to store the data in a local database. However, there are also some reasons that speak against it. In order to keep the measured data (for example, from a weather station) available in the […]

How to let an Arduino and Raspberry Pi communicate with each other
Arduino & ESP8266, Hardware & GPIO
Arduino & ESP8266, Hardware & GPIO

How to let an Arduino and Raspberry Pi communicate with each other

Felix - 8. June 2019

I have already described in a previous article how the Arduino works and which models exist. There are plenty of articles on the Arduino itself, but few in connection with the Raspberry Pi, but this combination offers many possibilities. Since I want to show more about the Arduino in conjunction with the Raspberry Pi, I […]

Raspberry Pi LCD Display: 16×2 Characters Display (HD44780)
Hardware & GPIO
Hardware & GPIO

Raspberry Pi LCD Display: 16×2 Characters Display (HD44780)

Felix - 21. April 2019

The most common controller of multi-line character displays is the HD44780. There are several Raspberry Pi LCD display sizes (8×2, 16×2, 20×4, etc.) that run with it. In this tutorial, I will show how to use a 16×2 character display and also run a test script.

Expand Raspberry Pi GPIOs with I2C Port Expander
Hardware & GPIO
Hardware & GPIO

Expand Raspberry Pi GPIOs with I2C Port Expander

Felix - 1. December 2018

If you have several smaller or one larger project, you will soon discover that the GPIO pins of the Raspberry are fastly becoming too little. For all of you, this tutorial will show you how to use an I2C Port Expander to easily multiply the GPIO pins many times over.

Installing OpenCV on the Raspberry Pi
Projects, Software
Projects, Software

Installing OpenCV on the Raspberry Pi

Felix - 24. June 2018

Anyone who has dealt with image processing in relation to the Raspberry Pi will sooner or later come across the OpenCV library. It provides many very useful features such as face recognition, the creation of depth maps (stereo vision, optical flow), text recognition or even for machine learning. In addition, OpenCV (Open Source Computer Vision) […]

Raspberry Pi: Control Relay switch via GPIO
Hardware & GPIO
Hardware & GPIO

Raspberry Pi: Control Relay switch via GPIO

Felix - 17. June 2018

Often you want to control modules with a higher voltage with the Raspberry Pi. For this purpose, relays can be used on the Raspberry Pi: The relay “switch” is utilized by means of a low-voltage pulse. Since the Pi only tolerates a maximum of 5V (the GPIOs even only 3.3V) without relays, there is the […]