Thanks to the I2C bus, the Raspberry Pi can be equipped with many practical sensors and actuators. One (in my opinion) very elegant possibility for user input is the MPR121. The [...]
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Tag: Sensors
HowTo: Anemosens - Building a 3D printed anemometer (wind sensor)
To be honest, the idea of a 3D printable wind sensor ("anemometer" in technical jargon) has been floating around in my head for quite a long time. Initially, I would have used it as a wind sensor for one of my weather stations [...]
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HowTo: ESPEasy - Set time synchronization with the DS3231 / DS3232 RTC
Thanks to NTP server ESPEasy is able to retrieve the time via WiFi connection. This possibility can be set up very easily and is described for example here: ESPEasy - NTP time retrieval [...]
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HowTo: ESPEasy - Connecting the APDS-9960 gesture sensor to the ESP8266 / ESP32 and reading it out
The APDS-9960 is a sensor that can be connected to a microcontroller like the ESP8266 via the I2C bus. With the help of the sensor it is possible to recognize simple gestures, which [...]
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HowTo: ESPEasy - Connecting the VL53L0X / VL53L1X distance sensor to the ESP8266 / ESP32 and reading it out
The VL53L0x or its sister/brother, the VL53L1X is a very accurate and relatively inexpensive laser distance sensor. With this, distances can be measured almost to the millimeter. In one of my [...]
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HowTo: ESPEasy - Connecting BME280 / BMP280 to the ESP8266 and reading it out
The BME280 is one of the sensors I use in almost all my projects. With this not only the temperature can be measured. Also the humidity and the air pressure [...]
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HowTo: ESPEasy – level sensor with VL53L0X / VL53L1X
I recently stumbled across the VL53L0X and VL53L1X TOF distance sensors. These sensors can determine distances with millimeter accuracy using a laser. Thereby they have a range of up to 4 m [...]
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HowTo: Node Red – Display Raspberry Pi's system data on the dashboard
Besides the exciting data that a SmartHome generates, you should also care a little about the status of the heart of the SmartHome. Do you have your NodeRed installation on a RaspberrypPi(or other [...]
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HowTo: Build your own retro SmartHome display via analogue displays
Recently, while cleaning out the basement, I found an old control panel with old analog displays. This gave me the idea that you have to be able to use these displays somehow [...].
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HowTo: Node Red – Integrate 433Mhz window contact
In the article about the 433Mhz mini pushbutton, I had already reported on my forays through the wonders of the electronic product world. In the process, not only the 433Mhz wireless wall switch, 433Mhz mini push button [...]
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HowTo: Node Red - Read UPS status
One of the weak points of a SmartHome system that you only really realize when something goes wrong is "energy". All the sensors, actuators and the controlling intelligence behind them run [...]
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HowTo: Node Red – Warning if humidity is too high
Especially in rooms where you "work" a lot with water or water vapor, you should always ventilate sufficiently to avoid damage and health hazards caused by mold. If you are one of the [...]
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HowTo: RaspberryPi – Install MQTT Server on the RaspberryPi
MQTT (Message Queue Telemetry Transport) is the protocol that is becoming more and more important in the world of Internet of Things. With this protocol it is very easy to transfer different data between different [...]...
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HowTo: FHEM – Installation on the RaspberryPi
One term you come across more and more often in everyday life is "SmartHome". But what does it mean? And do I really need it? Smart home (=intelligent home) is a generic term for [...]
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