Library Archive • Wolles Elektronikkiste

BLE with the ESP32 – An Introduction

After a brief overview of BLE (Bluetooth Low Energy), I will walk you through, step by step, how to use this technology on ESP32-based boards.

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.

Creating Libraries and Classes – Part II

In the second part of the post about libraries and classes, I use the MPU6050 to show how you write Arduino libraries for sensors or other devices to be controlled and what typical issues arise.

Creating Libraries and Classes – Part I

This post is part 1 of a crash course on libraries and classes. It is designed to help you get started with this complex topic.

nRF24L01 – 2.4 GHz radio modules

Using the nRF24L01 and the RF24 library, you can exchange data between microcontrollers via 2.4 GHz radio. I show how it works.

4-channel, 24-bit ADC ADS1220

I introduce the ADS1220 4-channel, 24-bit A/D converter and my associated library using several example sketches.

MCP23x1y Port Expander

I compare the members of the MCP23x1y family: MCP23016, MCP23017, MCP23S17, MCP23018, MCP23S18 and show you how to control them.

EEPROM Part 3 – External SPI EEPROMs

Compared to I2C-based EEPROMs, writing data to SPI EEPROMs is faster, especially for bulk uploads. I explain how this works and will introduce my library for the SPI based EEPROMs.

ICM-20948 9-Axis Sensor Part II

This is the second part of my article about the 9-axis sensor ICM-20948. I continue with the presentation of my associated library.

ICM-20948 9-Axis Sensor Part I

I present the ICM-20948 9-axis sensor and my associated library. The ICM-20948 is the successor to the MPU-9250. This is Part 1.

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Wolles Elektronikkiste

Die wunderbare Welt der Elektronik

Tag: Library