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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Formatted output
Generating formatted output with sprintf(), snprintf() and dtostrf() is convenient and simple. I will explain the various options as well as the pitfalls.
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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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Interrupts – Part 3: Timer Interrupts
The programming of timer interrupts is hardware-specific. I show in detail how it works on the ATmega328P, ATtiny85, ESP8266 and ESP32.
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Interrupts – Part 2: Pin Change Interrupts
Part 2 of my series about interrupts deals with pin change interrupts. These are specific for AVR based Arduino and MiniEVB boards.
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Interrupts – Part 1: External interrupts
Interrupts can be used to solve many challenges in microcontroller programming. However, there are also some stumbling blocks. This first part is about external interrupts.
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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.
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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.
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Voltage regulation – linear and switching regulators
Many projects require a defined voltage level. I’ll show you how you can use linear and switching regulators and how they work.
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I2C scanner
An I2C scanner sketch is introduced. This allows to determine I2C addresses or to check non-functioning circuits with I2C component.
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