BNO055 9-DoF sensor

BNO055 9-DoF sensor

The BNO055 is a 9-DoF sensor with an amazing range of functions. I’ll show you what features it has and how you can control it with various libraries.

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BNO08x - 9-DoF-IMUs

BNO08x – 9-DoF-IMUs

The BNO08x family comprises 9-DoF IMUs that use sensor fusion to detect orientation in space and complex movement patterns such as footsteps. I will show you how to control these sensors with suitable libraries.

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Async WebServer with the ESP32

Async WebServer with the ESP32

I will show you step-by-step how you can control one or more ESP32s via your browser using the Async WebServer. We will switch LEDs, dim LEDs and read out values.

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SCD4x CO₂ sensors

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.

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DS3231-based alarm clock

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

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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