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Using a Raspberry Pi distance sensor (ultrasonic sensor HC-SR04)
Hardware & GPIO
Hardware & GPIO

Using a Raspberry Pi distance sensor (ultrasonic sensor HC-SR04)

Felix - 11. November 2015

For many (outdoor) projects a distance measurement is necessary or advantageous. These small modules are available starting at 1-2 bucks and can measure the distance up to 4-5 meters by ultrasound and are suprisingly accurate. This tutorial shows the connection and control.

Let Raspberry Pi’s communicate with each other per 433MHz wireless signals
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Let Raspberry Pi’s communicate with each other per 433MHz wireless signals

Felix - 26. October 2015

Maybe some of you thought about how to let some RaspberryPi’s communicate with each other wirelessly. For this purpose small 433MHz modules are ideal, which are already available for a few bucks. Therefore in this tutorial I want to show how two (or more) RaspberryPi’s can “talk” with each other. But do not worry, if […]

Installing WiringPi (and pin allocation) – Raspberry Pi
Hardware & GPIO
Hardware & GPIO

Installing WiringPi (and pin allocation) – Raspberry Pi

Felix - 25. October 2015

WiringPi is a library that is used by many applications on the Raspberry but is not available by default. Especially many examples from the Arduino (C ++ code) can be performed easily on the RaspberryPi. To do so, this valuable library was written.

Raspberry Pi LED Matrix Library – Installation for multiline m x n MAX7219 LED Matrices
General, Hardware & GPIO
General, Hardware & GPIO

Raspberry Pi LED Matrix Library – Installation for multiline m x n MAX7219 LED Matrices

Felix - 12. August 2014

In this Tutorial I will show you how to use the library for multilined MAX7219 Matrices I wrote (improved and extended version of JonA1961’s MAX7219array https://github.com/JonA1961/MAX7219array )

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