Wolles Elektronikkiste

HC-12 Radio Module

The HC-12 radio module is easy to handle and has a long range. I’ll show you how it works, how you make settings, and how you use it legally compliant (in Germany).

DCF77 – Radio Controlled Clock

Here you will learn what the DCF77 radio clock signal is, how to receive it, how to evaluate it and how to use it optimally together with the library RTCLib.

DS3231 – Real-time clock

In this article I will present the features of the real-time clock (RTC) DS3231 and how you can use it with the RTCLib library.

ADXL345 – The Universal Accelerometer – Part 2

In the second part of my article about the ADXL345 and my library I go into Activity/Inactivity, Single and Double Taps and FIFO.

ADXL345 – The Universal Accelerometer – Part 1

The ADXL345 is a 3-axis accelerometer with many features. I explain how to use it with my associated library.

MMA7361 – Analog Accelerometer

I show you how to use the analog 3-axis accelerometer MMA7361 to determine acceleration, angle and orientation and how to use the free fall interrupt.

MPU6050 Accelerometer and Gyroscope

The MPU6050 is a 6-axis gyroscope and accelerometer. I show you how to control it with and without a library and use its interrupt function.

Remote shutter for smartphones – Part 2

In this second part about remote shutters, I’ll show you how to trigger your smartphone camera with BT modules like the HC-05 or HC-06.

Remote shutter for smartphones

I show you how to hack a remote shutter for your smartphone to control it via an Arduino. Moreover: problem-solving for long-term operation.

This is my last (!) post about current sensors. The INA282 determines currents by amplifying the voltage dropping across an external shunt. The output value is analog. I show you how to use the INA282 with the Arduino UNO or other microcontrollers.

Die wunderbare Welt der Elektronik

Async WebServer with the ESP32

STM32 boards – Part 2: Selected functions

STM32 boards – Part 1: Overview and Upload

SCD4x CO₂ sensors