Keyestudio Basic Starter Kit Series User manual

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Catalog
1. Kit introduction ..........................................................................................................................1
2. Kit contents................................................................................................................................2
3. Project list ..................................................................................................................................3
4. Project details.............................................................................................................................4
Project 1: Hello World.............................................................................................................4
Project 2: LED blinking...........................................................................................................7
Project 3: PWM ......................................................................................................................9
Project 4:Traffic light............................................................................................................14
Project 5: LED chasing effect.................................................................................................18
Project 6: Button-controlled LED...........................................................................................22
Project 7:Active buzzer.........................................................................................................26
Project 8: Passive buzzer .......................................................................................................30
Project 9: RGB LED .............................................................................................................33
Project 10: Photo resistor.......................................................................................................36
Project 11: Flame sensor........................................................................................................39
Project 12: LM35 temperature sensor.....................................................................................44
Project 13:Tilt switch............................................................................................................47
Project 14: IR remote control.................................................................................................50
Project 15:Analog value reading............................................................................................59
Project 16: 74HC595.............................................................................................................63
Project 17: 1-digit LED segment display.................................................................................67
Project 18: 4-digit LED segment display.................................................................................74
Project 19: 8*8 LED matrix...................................................................................................83
Project 20: 1602 LCD............................................................................................................90
Project 21: 9g servo control .................................................................................................102
5. Summary....................................................................................................错误！未定义书签。

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1. Kit introduction
This is the basic Starter Kit, developed specially for those beginners who are interested in Arduino.
You will have a set of Arduino's most common and useful electronic components. What's more. We
will offer you a detailed tutorials including project introduction and their source codes.You may learn
about Arduino through using these basic projects. This kit will help you control the physical world
with sensors.

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2. Kit contents
Kit A for unoR3 Kit B for 2560 R3 Kit C Without board
UNO R3 Mega 2560 No controller board
5x LED - Blue 5x LED - Blue 5x LED - Blue
5x LED - Red 5x LED - Red 5x LED - Red
5x LED - Yellow 5x LED - Yellow 5x LED - Yellow
1x LED - RGB 1x LED - RGB 1x LED - RGB
5x 10K Ω resistor 5x 10K Ω resistor 5x 10K Ω resistor
5x 1K Ω resistor 5x 1K Ω resistor 5x 1K Ω resistor
8x 220 Ω resistor 8x 220 Ω resistor 8x 220 Ω resistor
1x 10K Ω Pot 1x 10K Ω Pot 1x 10K Ω Pot
1x 7-seg LED 1x module 1x 7-seg LED 1x module 1x 7-seg LED 1x module
1x 7-seg LED 4x module 1x 7-seg LED 4x module 1x 7-seg LED 4x module
1x 8x8 LED Matrix 1x 8x8 dot LED array 1x 8x8 dot LED array
1x Buzzer (active) 1x Buzzer (active) 1x Buzzer (active)
1x Buzzer (passive) 1x Buzzer (passive) 1x Buzzer (passive)
1x Flame sensor 1x Flame sensor 1x Flame sensor
1x IR receiver 1x IR receiver 1x IR receiver
1x IR remote control 1x IR remote control 1x IR remote control
1x LM35 Temp Sensor 1x LM35 Temp Sensor 1x LM35 Temp Sensor
2x Ball tilt sensor 2x Ball tilt sensor 2x Ball tilt sensor
3x Photo Resistor 3x Photo Resistor 3x Photo Resistor
4x Small button switch 4x Small button switch 4x Small button switch
1x IC 74HC595N 16-pin DIP 1x IC 74HC595N 16-pin DIP 1x IC 74HC595N 16-pin DIP
1x LCD1602 1X LCD1602 1X LCD1602
1x 9g servo 1X 9G sevro 1X 9G sevro
830-pin Breadboard 830-pin Breadboard 830-pin Breadboard
Dupont connector wires Dupont connector wires Dupont connector wires
1x 6-cell AA Battery pack 1x 6-cell AABattery pack 1x 6-cellAABattery pack
1x USB cable 1x USB cable 1x USB cable

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3. Project list
1. Hello World
2. LED blinking
3. PWM
4. Traffic light
5. LED chase effect
6. Button-controlled LED
7. Active buzzer
8. Passive buzzer
9. RGB LED
10. Photo resistor
11. Flame sensor
12. LM35 temperature sensor
13. Tilt switch
14. IR remote control
15. Analog value reading
16. 74HC595
17. 1-digit LED segment display
18. 4-digit LED segment display
19. 8*8 LED matrix
20. 1602 LCD
21. 9g servo control

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4. Project details
Project 1: Hello World
Introduction
As for starters, we will begin with something simple. In this project, you only need an Arduino and a
USB cable to start the "Hello World!" experiment. This is a communication test of your Arduino and
PC, also a primer project for you to have your first try of the Arduino world!
Hardware required
1. Arduino board x1
2. USB cable x1
Sample program
After installing driver for Arduino, let's open Arduino software and compile code that enables Arduino
to print "Hello World!" under your instruction. Of course, you can compile code for Arduino
to continuously echo "Hello World!" without instruction. A simple If () statement will do the
instruction trick. With the onboard LED connected to pin 13, we can instruct the LED to blink first
when Arduino gets an instruction and then print "Hello World!”.
//////////////////////////////////////////////////////////
int val;//define variable val
int ledpin=13;// define digital interface 13
void setup()
{
Serial.begin(9600);// set the baud rate at 9600 to match the software set up. When connected to a
specific device, (e.g. bluetooth), the baud rate needs to be the same with it.
pinMode(ledpin,OUTPUT);// initialize digital pin 13 as output. When using I/O ports on an
Arduino, this kind of set up is always needed.
}
void loop()
{
val=Serial.read();// read the instruction or character from PC to Arduino, and assign them to Val.
if(val=='R')// determine if the instruction or character received is “R”.
{ // if it’s “R”,
digitalWrite(ledpin,HIGH);// set the LED on digital pin 13 on.
delay(500);

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digitalWrite(ledpin,LOW);// set the LED on digital pin 13 off. delay(500);
Serial.println("Hello World!");// display“Hello World！”string.
}
}
////////////////////////////////////////////////////////////////
Result
Screenshot

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Click serial port monitor
Input R
LED 13 will blink once；
PC will receive information from Arduino: Hello World
After you choose the right port，the experiment should be easy for you!

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Project 2: LED blinking
Introduction
Blinking LED experiment is quite simple. In the "Hello World!" program, we have come across LED.
This time, we are going to connect an LED to one of the digital pins rather than using LED13, which
is soldered to the board. Except anArduino and an USB cable, we will need extra parts as below:
Hardware required
1. Red M5 LED*1
2. 220Ω resistor*1
3. Breadboard*1
4. Breadboard jumper wires* several
We follow below diagram from the experimental schematic link. Here we use digital pin 10. We
connect LED to a 220 ohm resistor to avoid high current damaging the LED.
Connection for Uno R3:

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Connection for 2560 R3:

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Sample program
//////////////////////////////////////////////////////////
int ledPin = 10; // define digital pin 10.
void setup()
{
pinMode(ledPin, OUTPUT);// define pin with LED connected as output.
}
void loop()
{
digitalWrite(ledPin, HIGH); // set the LED on.
delay(1000); // wait for a second.
digitalWrite(ledPin, LOW); // set the LED off.
delay(1000); // wait for a second
}
//////////////////////////////////////////////////////////
Result
After downloading this program, in the experiment, you will see the LED connected to pin 10 turning
on and off, with an interval approximately one second.
The blinking LED experiment is now completed. Thank you!
Project 3: PWM

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Introduction
PWM, short for Pulse Width Modulation, is a technique used to encode analog signal level into digital
ones. A computer cannot output analog voltage but only digital voltage values such as 0V or 5V. So
we use a high resolution counter to encode a specific analog signal level by modulating the duty cycle
of PMW. The PWM signal is also digitalized because in any given moment, fully on DC power supply
is either 5V (ON), or 0V (OFF). The voltage or current is fed to the analog load (the device that uses
the power) by repeated pulse sequence being ON or OFF. Being on, the current is fed to the load;
being off, it's not. With adequate bandwidth, any analog value can be encoded using PWM. The output
voltage value is calculated via the on and off time. Output voltage = (turn on time/pulse time) *
maximum voltage value
PWM has many applications: lamp brightness regulating, motor speed regulating, sound making, etc.
The following are the three basic parameters of PMW:
1. The amplitude of pulse width (minimum / maximum)
2. The pulse period (The reciprocal of pulse frequency in 1 second)
Width
Cycle
Level

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3. The voltage level（such as：0V-5V）
There are 6 PMW interfaces on Arduino, namely digital pin 3, 5, 6, 9, 10, and 11. In previous
experiments, we have done "button-controlled LED", using digital signal to control digital pin, also
one about potentiometer. This time, we will use a potentiometer to control the brightness of the LED.
Hardware required
1. Potentiometer module*1
2. Red M5 LED*1
3. 220Ω resistor
4. Breadboard*1
5. Breadboard jumper wires*several
The input of potentiometer is analog, so we connect it to analog port, and LED to PWM port.
Different PWM signal can regulate the brightness of the LED.
Connection for R3:
Connection for 2560 R3:

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Sample program
In the program compiling process, we will use the analogWrite (PWM interface, analog value)
function. In this experiment, we will read the analog value of the potentiometer and assign the value to
PWM port, so there will be corresponding change to the brightness of the LED. One final part will be
displaying the analog value on the screen. You can consider this as the "analog value reading" project
adding the PWM analog value assigning part. Below is a sample program for your reference.
//////////////////////////////////////////////////////////
int potpin=0;// initialize analog pin 0
int ledpin=11;//initialize digital pin 11（PWM output）
int val=0;// Temporarily store variables' value from the sensor
void setup()
{
pinMode(ledpin,OUTPUT);// define digital pin 11 as “output”
Serial.begin(9600);// set baud rate at 9600
// attention: for analog ports, they are automatically set up as “input”
}
void loop()
{

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val=analogRead(potpin);// read the analog value from the sensor and assign it to val
Serial.println(val);// display value of val
analogWrite(ledpin,val/4);// turn on LED and set up brightness（maximum output of PWM is 255）
delay(10);// wait for 0.01 second
}
//////////////////////////////////////////////////////////
Result
After downloading the program, when we rotate the potentiometer knob, we can see changes of the
displaying value, also obvious change of the LED brightness on the breadboard.

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Project 4: Traffic light
Introduction
In the previous program, we have done the LED blinking experiment with one LED. Now, it’s time to
up the stakes and do a bit more complicated experiment-traffic lights. Actually, these two experiments
are similar. While in this traffic lights experiment, we use 3 LEDs with different color other than 1
LED.
Hardware required
1. Arduino board *1
2. USB cable *1
3. Red M5 LED*1
4. Yellow M5 LED*1
5. Green M5 LED*1
6. 220Ω resistor *3
7. Breadboard*1
8. Breadboard jumper wires* several
Connection for R3:

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Connection for 2560 R3:

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Sample program
Since it is a simulation of traffic lights, the blinking time of each LED should be the same with those
in traffic lights system. In this program, we use Arduino delay () function to control delay time, which
is much simpler than C language.
//////////////////////////////////////////////////////////
int redled =10; // initialize digital pin 8.
int yellowled =7; // initialize digital pin 7.
int greenled =4; // initialize digital pin 4.
void setup()
{
pinMode(redled, OUTPUT);// set the pin with red LED as “output”
pinMode(yellowled, OUTPUT); // set the pin with yellow LED as “output”
pinMode(greenled, OUTPUT); // set the pin with green LED as “output”
}
void loop()
{
digitalWrite(greenled, HIGH);//// turn on green LED
delay(5000);// wait 5 seconds

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digitalWrite(greenled, LOW); // turn off green LED
for(int i=0;i<3;i++)// blinks for 3 times
{
delay(500);// wait 0.5 second
digitalWrite(yellowled, HIGH);// turn on yellow LED
delay(500);// wait 0.5 second
digitalWrite(yellowled, LOW);// turn off yellow LED
}
delay(500);// wait 0.5 second
digitalWrite(redled, HIGH);// turn on red LED
delay(5000);// wait 5 second
digitalWrite(redled, LOW);// turn off red LED
}
//////////////////////////////////////////////////////////
Result
When the uploading process is completed, we can see traffic lights of our own design.
Note: this circuit design is very similar with the one in LED chase effect.
The green light will be on for 5 seconds, and then off., followed by the yellow light blinking for 3
times, and then the red light on for 5 seconds, forming a cycle. Cycle then repeats.
Experiment is now completed, thank you.

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Project 5: LED chasing effect
Introduction
We often see billboards composed of colorful LEDs. They are constantly changing to form various
effects. In this experiment, we compile a program to simulate chase effect.
Hardware required
1. Led x6
2. 220Ω resistor x6
3. Colorful breadboard wires
Connection for R3: