Preparation work

Before you start working with Arduino you should install Arduino IDE, you may find it here. Arduino IDE a platform to program your Arduino board.

But it's not finished. Most of our Arduino chips are China based, and for them you'll need additional drivers. By the way you may download it from here.

When you finish all preparation work, you may start lessons.

P.S.: if you find mistakes or if you want add additional material to given lesson, please feel free to write it in comments below. 

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Lesson 9: Piezo Buzzer

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Hello folks. We continue to our Arduino basics, and today on this lesson we will learn about Piezo Buzzer. This is a kind of a speaker but much simple. It has membrane with "tone()" command and "noTone()" commands. We can control its tone. As you see on the picture Buzzer has + side and it means another side is for GND (-) ground. + side is connected to any analog outputs like ~3, ~5, ~6, ~9, ~10, ~11. Tone range for this Piezo Buzzer is between 31 and 4900. Let's make a scheme. Here is basic connection. But I've also seen a connection with 100 Ohm resistor on + side. Code: void setup() {   pinMode(3, OUTPUT); } void loop() {   tone(3,500); //put tone to 500 Hz   delay(500); //wait 1 second   noTone(3); //stop tone   delay(200); } By the way, there will be difference in tone sound for different Piezo Buzzers, even in your kit. And at the last you may see on different melody examples on Piezo Buzzer in Internet. Here is some of the
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Lesson 10: Piezo Buzzer controlled with Potentiometer

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Here we are. Now we are going to connect previous lesson device and this week device. Here is the scheme: Yeah, the connection is very simple. Code a bit different than in Lesson 6 . Find out what we have to change from previous Lesson 6? #define bz 3 #define pot A0 void setup(){ pinMode(bz, OUTPUT); pinMode(pot, INPUT); } int x; void loop(){ // read value of Potentiometer // as you remember A0-A5 pins working in range of 0-1023 // but analog TONE range is 31-4900 // to get correct result we will multiply result to 4 x = analogRead(pot) * 4; // set tone to new value tone(bz, x); } Self study: Give to students 2 set of buttons (with 10K Ohm resistor). And ask to do kind of piano with 2 buttons. Good luck! For the help about Buttons you may look to previous lesson: Lesson 4 .
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Lesson 6: Potentionmeter & LED

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