Axtya

Hey guys, today we will be using the arduino to control a motor! to wire this just use this drawing I made in fritzing:   Unfortunately, these kinds of motors do not have an adapter that will allow you to connect it to the arduino, so I had to solder two jumper cables on each of those little metal things that come out of the motor and connect one to ground and the other to pin 6. This code will make that motor start spinning: void setup() { pinMode (6, OUTPUT); } void loop() { digitalWrite (6, HIGH); } Now upload this sketch to your arduino and the motor should start spinning. Which direction does it spin? now try swapping the cables, which way does it spin now? With most motors, it should be spinning in the opposite direction! If you have any problems do not forget to comment them! please follow me on this blog, and on twitter @axtyab, and hopefully refer this blog to others that you know!

Just like in algebra, one of the first thing you must know in programming is how variables work. I am sure you understand, but if you don't, a variable is a letter or symbol that can represent any number. In C++, they can also represent things such as words or characters, but we will get into those later. Lets run through the most basic types of variables: int x; X is now an integer so it can be negative or positive, but NOT a decimal. double x; X can now be negative, positive, AND a decimal. char x; X can now be any one character like Y or H. char's are NOT values, so you CANNOT do any sort of mathematical operation with them, like this: char x = 10; char y = 5; x + y = z; z = 15; WRONG!!! but you CAN do this: char y; char x = 'h'; y = x; Now y = "h" because x = "h" and we said y = x; But now we need to understand how to assign values or characters to these variable types! For int: int x; x = 5; OR in

In almost all programming languages, the first program that people learn is how to print "Hello, World!" to the screen. So this is what we will be doing now in c++! So we start off  by doing this: #include <iostream> using namespace std; This basically says that we will be using the iostream library to be able to print things out to the console. don't worry about using namespace std; for now. int main() { return 0; } This is the function where everything will happen ( everything inside the brackets.) the return 0; is what we need to include at the end of the function because main is an int function. We just return 0 to show that the function has ended. cout << "Hello World!!!" << endl; This will go inside int main(). All this does is prints out Hello World!!! on the console, and endl just ends the line after that. Remember to include that semicolon at the end of cout. Your final code should look like this: #i