Arduino guide

In recent years, I've started to make Arduino circuits (simpler than built) and over time have moved from BASCOM-AVR to the C programming language used by Arduino.
(After Pascal, Delphi and Basic, it was a little bit difficult, but you speak as many languages as possible ...)

Unfortunately, many things are hard to come by because Internet resources are full of basic solutions and examples. Here are some simple but more useful Arduino tricks to share:

Here are some basic things to get started:

Variables with Value Assignment:

Type name = assignment size:

char c = „A”; //or it can be a value (0..255): char c = 123; 1 Byte (8bit)

byte b = 10; // (0..255) 1 Byte (8bit)

int i = 10; // (-32768..32767) 2 Byte (16bit)

unsigned int ui = 10; // (0..65535) 2 Byte (16bit)

word w = 10; // (0..65535) 2 Byte (16bit)

unsigned long ul = 10; // (0..4.294.967.295) 4 Byte (32bit)

long l = 10; // (-2.147.483.648..2.147.483.647) 4 Byte (32bit)

float l = 10; // (-3,4028235E+38..3,4028235E+38 ) 4 Byte (32bit)

double d = 10; // (..) 8 Byte (64bit)