SCD4x CO₂ sensors
I introduce the SCD4x CO₂ sensor modules and show you how to control them using the Sensirion library. I also check their reliability in comparison with a commercial measuring device.
Read MoreTag: Arduino
DS3231-based alarm clock
I present concepts for a DS3231-based alarm clock. The alarm clock is controlled with only two buttons and a slide switch. I use the Nokia 5110 and the DOGS164 as energy-saving displays.
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Preprocessor directives
Preprocessor directives determine what the compiler shall ultimately process. To do this, they replace character strings and include or exclude lines of code. They also influence the behavior of the compiler.
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Programming the tinyAVR series 0, 1, 2 – Part 1
The microcontrollers of the tinyAVR family differ significantly from the classic ATtinys. This is an introduction to programming at register level.
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HC-14 – the simple LoRa module
With the HC-14 module, you can use LoRa wireless technology very conveniently via simple serial functions such as println(). I’ll show you how it works.
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Serial and SoftwareSerial
In this article, you will learn how Serial and SoftwareSerial work, which functions are available to you and how to use them.
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Using LoRa with the EByte E220, E22 and E32 series
With the Ebyte LoRa modules from the E220, E20 and E32 series, you can send data over long distances with low energy consumption. An overview and introduction.
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Character Arrays vs. Strings
Character arrays are less convenient than strings, but save resources. I show that character arrays are in no way inferior to strings in terms of functionality.
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Using FreeRTOS with ESP32 and Arduino
FreeRTOS is a real-time system, with which multitasking can also be realized on relatively small MCUs. This article is an introduction to the topic, whereby I will limit myself to the ESP32 and the AVR-based Arduinos.
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Arduino Nano Every – a deep dive
The Arduino Nano Every is much more than just an upgraded Arduino Nano. Its underlying ATmega4809 opens up a wide range of possibilities. The article provides an in-depth insight.
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