Raspberry Pi Heartbeat / Pulse measuring
GPIO, Projects
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GPIO, Projects
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Raspberry Pi Heartbeat / Pulse measuring

Felix - Mar 23, 2017

Not only with fitness watches, but also with the Raspberry Pi it is possible to measure pulse / heart rates. With a small module – the Raspberry Pi pulse sensor – you can easily measure your own pulse and thus monitor permanently your health condition. This sensor can also be used in mobile Raspberry Pi […]

Configure and read out the Raspberry Pi gas sensor (MQ-X)
GPIO
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GPIO
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Configure and read out the Raspberry Pi gas sensor (MQ-X)

Felix - Mar 17, 2017

Sensors are necessary to detect the components of the air. These are used e.g. in smoke detectors. However, instructions for using these gas sensors at the Raspberry Pi are rare, which is why in this tutorial the general use of such MQ modules at the Raspberry Pi is shown. Thus, e.g. smoke detectors or air […]

50 of the most important Raspberry Pi Sensors and Components
GPIO, Projects
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GPIO, Projects
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50 of the most important Raspberry Pi Sensors and Components

Felix - Nov 27, 2016

One of the many advantages of the Raspberry Pi is that it is possible to connect almost all standard Arduino and Raspberry Pi sensors and components to the various GPIOs. Moreover you can evaluate and / or process the values with programs and other software. This accessory can be used in projects such as Smart […]

Raspberry Pi Stepper Motor Control with L293D / ULN2003A
GPIO
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GPIO
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Raspberry Pi Stepper Motor Control with L293D / ULN2003A

Felix - Nov 14, 2015

Stepper motors are ideal for applications where it is necessary to know the angle of rotation, for example in robotics. Unlike a normal motor, stepper motors can control the steps individually and can therefore detect the exact position. For easy controlling such a motor, a driver IC like the L293D or the ULN2003 are needed. […]

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

Felix - Nov 11, 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
GPIO, Projects
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GPIO, Projects
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Let Raspberry Pi’s communicate with each other per 433MHz wireless signals

Felix - Oct 26, 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
GPIO
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GPIO
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Installing WiringPi (and pin allocation) – Raspberry Pi

Felix - Oct 25, 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, GPIO
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General, GPIO
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Raspberry Pi LED Matrix Library – Installation for multiline m x n MAX7219 LED Matrices

Felix - Aug 12, 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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