Beginning Arduino by Michael McRoberts

By Michael McRoberts

In Beginning Arduino, you are going to study all in regards to the well known Arduino microcontroller through operating your approach via an awesome set of fifty cool initiatives. you are going to growth from an entire newbie concerning Arduino programming and electronics wisdom to intermediate talents and the arrogance to create your individual outstanding Arduino tasks. completely no adventure in programming or electronics required!

instead of requiring you to plow through pages of concept earlier than you begin making issues, this ebook has a hands-on procedure. you are going to dive into making tasks correct from the beginning, studying how one can use quite a few digital elements and the way to application the Arduino to regulate or converse with these components.

each one undertaking is designed to construct upon the data discovered in prior tasks and to extra your wisdom in programming in addition to talents with electronics. by way of the tip of the booklet it is possible for you to create your individual tasks hopefully and with creativity.

Please notice: the print model of this name is black & white; the e-book is complete colour. you could obtain the colour diagrams within the ebook from http://www.apress.com/9781430232407

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Figure 2-3. An Integrated Circuit (or chip) plugged across the gap in a breadboard The next component is a resistor. A resistor is a device designed to cause resistance to an electric current in order to cause a drop in voltage across its terminals. You can think of a resistor as a water pipe that is a lot thinner than the pipe connected to it. As the water (the electric current) comes into the resistor, the pipe gets thinner and the water volume (current) coming out of the other end is therefore reduced.

II means true if either operand is true; for example, this if statement will run if x is 5 or if y is 10: if (X==5 II y==10) {..... The! e, equals zero : i f (! x) {.. •.... •• . • In this case , the conditio ns within the pa renthes is are processed separately and treated as a single condition and then compared with the second condition. So, if you draw a simple truth table (see Table 2-3) for this stateme nt , you can see how it works. Table 2-3. Truth table fo r the condition (x==5 && (y==10 II z==25)) 44 x y z True/False?

The commands to tell the Arduino to do this are contained within the loop() function because you wish them to repeat over and over. The first statement is digitalWrite(ledPin, HIGH); and this writes a HIGH or a LOWvalue to the pin within the statement (in this case ledPin, which is Digital Pin 10). When you set a pin to HIGH, you are sending out 5 volts to that pin. When you set it to LOW, the pin becomes 0 volts, or ground. This statement, therefore, sends out 5v to pin 10 and turns the LEDon.

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