Wolles Elektronikkiste • Die wunderbare Welt der Elektronik

MCP23x1y Port Expander

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

The MOSFET as Switch

I show how to use a MOSFET as a switch and which parameters are relevant for the selection of the right MOSFET.

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.

EEPROM Part 2 – external I2C EEPROMs

I show how you can use I2C controlled EEPROM ICs with your microcontroller. This works very comfortably with a library, but it can also be done without it.

EEPROM Part 1 – AVR internal EEPROMs

AVR microcontrollers have an EEPROM in which you can store data permanently. I show you how to write to and read from it.

Logic Analyzer

The Logic Analyzer is a low-cost tool that allows you to analyze signals such as I2C, SPI, PWM and much more. I introduce the Analyzer and the Logic 2 software.

Blynk – An Introduction

Blynk is an easy-to-use IoT platform that allows you to control microcontrollers remotely. This is an introduction.

WiFi BBQ thermometer

I will show you how to build a WiFi BBQ thermometer with a temperature sensor, an ESP32 board and a few other components.

Wireless BBQ thermometer (433 MHz)

I will show you how to build a wireless 433 MHz BBQ thermometer with alert function and graphical display of the temperature curve.

Using WiFi with the ESP8266 and ESP32

I show you step by step how to network and control your ESP32 or ESP8266 boards via WLAN and how to exchange data between them.