Raspberry Pi: Measure Humidity and Temperature with DHT11/DHT22
Hardware & GPIO
Hardware & GPIO

Raspberry Pi: Measure Humidity and Temperature with DHT11/DHT22

Felix - 3. February 2018

With the Raspberry Pi and some sensors, it is easy to measure the temperature without much effort. In addition, however, the humidity in certain situations or projects (such as a weather station) can be enlightening. Sensors such as the DHT11 and DHT22 are not only available for a few euros, but they can also measure […]

Connect and Control WS2812 RGB LED Strips via Raspberry Pi
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Connect and Control WS2812 RGB LED Strips via Raspberry Pi

Felix - 15. November 2017

If you are looking for RGB LED strips, you will probably come across the WS2812 or the WS2801. These two LED strips are very different, but both can be controlled with the Raspberry Pi. After using the latter in a previous tutorial and using it in our Ambilight, this tutorial is about using the Raspberry […]

Measuring Temperature with a Raspberry Pi Temperature Sensor (1-Wire)
Hardware & GPIO
Hardware & GPIO

Measuring Temperature with a Raspberry Pi Temperature Sensor (1-Wire)

Felix - 7. November 2017

One of the many applications of a Raspberry Pi is measuring the temperature. In projects like weather stations you want to know the exact value. Using a 1-Wire Raspberry Pi temperature sensor makes it very easy to read it out and you will only need one GPIO pin. In this tutorial it is described how […]

Build a digital Raspberry Pi Scale (with Weight Sensor HX711)
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Build a digital Raspberry Pi Scale (with Weight Sensor HX711)

Felix - 21. May 2017

As hardly any scales work analogously, it is of course also possible to measure weights with a digital Raspberry Pi scale. This can be used in various applications as the weight value ranges which can be measured are also almost unlimited. Only a sensor and a load cell are required, which are available for different […]

Control a HD44780 LCD display via I2C with the Raspberry Pi
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Control a HD44780 LCD display via I2C with the Raspberry Pi

Felix - 15. May 2017

LCD character displays are a simple and a cost-effective way to display a text. Thanks to the HD44780 controller, the control of the modules has become very simple. However, one must occupy many GPIOs for it. An alternative is the I2C data bus, which means that only two GPIOs are used. In this tutorial a […]

How to connect and control a Raspberry Pi WS2801 RGB LED Strip
Hardware & GPIO, Projects
Hardware & GPIO, Projects

How to connect and control a Raspberry Pi WS2801 RGB LED Strip

Felix - 7. April 2017

One of the many Raspberry Pi projects is the lighting of rooms or objects. LED strips are particularly suitable for this purpose, because many individual LEDs are aligned and each individual LED can display all RGB colors. Thus, some projects such as room lighting, Ambilight or e.g. a Christmas tree lighting can be realized. The […]

How to use a Raspberry Pi Fingerprint Sensor for Authentication
Hardware & GPIO
Hardware & GPIO

How to use a Raspberry Pi Fingerprint Sensor for Authentication

Felix - 25. March 2017

Not only in Hollywood films, fingerprint readers are seen more and more frequently. Such modules are often installed in home surveillance systems and are used for the simple but secure verification of persons. With such a Raspberry Pi Fingerprint Sensor you can also implement some other projects, such as secured locks. One of the advantages […]

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

Raspberry Pi Heartbeat / Pulse measuring

Felix - 23. March 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)
Hardware & GPIO
Hardware & GPIO

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

Felix - 17. March 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
Hardware & GPIO, Projects
Hardware & GPIO, Projects

50 of the most important Raspberry Pi Sensors and Components

Felix - 22. January 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 dhtvarious 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 […]

Measuring Rotation and acceleration with the Raspberry Pi
Hardware & GPIO, Projects
Hardware & GPIO, Projects

Measuring Rotation and acceleration with the Raspberry Pi

Felix - 30. November 2015

Acceleration and rotation sensors are most known from smartphones. The rotation of the device can be detected and can be addressed directly. With the Raspberry Pi and a Gyroscope / Accelerator sensor it is possible to measure the rotation as well as the acceleration of the 3 axes. In this tutorial I show how to […]

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