Lesson Guide

Lesson 1: EEPROM Storage Program

This lesson demonstrates how to use the EEPROM storage capabilities with an Arduino.

1. Click Sketch in the Arduino IDE, select Manage Library in Include Library, search for AT24C256_library, and click Install.
2. Click File in the Arduino IDE, and select read_wirte from the AT24C256_library examples.
3. Click Upload, and then click Serial Monitor in the upper right corner of the IDE.

Screenshot of the Arduino Library Manager dialog box. It displays fields for Type, Topic, and a search bar. The library named 'AT24C256_library' is shown, with an 'Install' button available.

Lesson 2: 0.96in LED Screen Program

This lesson covers programming a 0.96-inch LED screen using Arduino.

1. Click Sketch in the Arduino IDE, select Manage Library in Include Library, search for U8glib, select U8glib, and click Install.
2. Click File in the Arduino IDE and select FPS from the U8glib examples.
3. Locate the line // U8GLIB_SSD1306_128X64 u8g (U8G_I2C_OPT_NONE | U8G_I2C_OPT_DEV_0); // I2C/TWI code. Delete the // to uncomment this line, then click Upload in the upper left corner.

Screenshot of the Arduino Library Manager dialog box. It displays fields for Type, Topic, and a search bar. The library named 'U8glib' is shown, with an 'Install' button available.

Lesson 3: MPU6050 Six Axis Gyroscope Program

This lesson focuses on using the MPU6050 Six Axis Gyroscope with Arduino.

1. Click Sketch in the Arduino IDE, select Manage Library in Include Library, search for Adafruit_MPU6050, and click Install.
2. Click File in the Arduino IDE and select basic_readings from the Adafruit_MPU6050 examples.
3. Click Upload, then click Serial Monitor in the upper right corner of the IDE, and switch the baud rate from 9600 to 115200.

Note on Calibration: Because the initial values of all axes of the MPU-6050 cannot be consistent, when Acceleration's X and Y axes are not equal to 0 m/s^2 and the Z axis is not equal to 9.8 m/s^2, and the X, Y, and Z values for Rotation are not equal to 0 rad/s, you can adjust the error values through the program to make the initial output relatively correct.

Screenshot of the Arduino Library Manager dialog box. It displays fields for Type, Topic, and a search bar. The library named 'Adafruit MPU6050' is shown, with an 'Install' button available.

Lesson 4: Passive Buzzer Program

This lesson provides code for a passive buzzer using Arduino.

#define Pot A3
#define Buzzer 8
int PotBuffer = 0;
void setup()
{
  pinMode(Buzzer,OUTPUT); // The buzzer pin is set to output
}
void loop()
{
  PotBuffer = analogRead(Pot); // Reading the AD value
  for(int i = 0 ; i < 50 ; i++) // Cycle 50 times
  {
    digitalWrite(Buzzer,HIGH); // Set the output high level
    delayMicroseconds(PotBuffer); // The delay PotBuffer value is us
    digitalWrite(Buzzer,LOW); // Set the output low level
    delayMicroseconds(100); // Delay 100us
  }
  delay(1000); // Delay 1000ms
}

Lesson 5: DH11 Temperature and Humidity Sensor Program

This lesson demonstrates reading temperature and humidity using the DH11 sensor with Arduino.

1. Click Sketch in the Arduino IDE, select Manage Library in Include Library, search for DHT11, select DFRobot_DHT11, and click Install.
2. Click File in the Arduino IDE, and select readDHT11 from the DFRobot_DHT11 examples.
3. Change #define DHT11_PIN 10 to #define DHT11_PIN3 and click Upload on the IDE home page.
4. Click Serial Monitor in the upper right corner of the IDE and switch the baud rate from 9600 to 115200. Wait approximately 1 second to get the current temperature and humidity readings.

Screenshot of the Arduino Library Manager dialog box. It displays fields for Type, Topic, and a search bar. The library named 'DFRobot_DHT11' is shown, with an 'Install' button available. Another image shows the Arduino IDE code editor with an arrow pointing to line 15, which reads '#define DHT11_PIN 3'.

Lesson 6: Infrared Remote Reception Program

This lesson covers receiving infrared signals using Arduino.

1. Click Sketch in the Arduino IDE, select Manage Library in Include Library, search for IRremote, and click Install.
2. Click File in the Arduino IDE and select ReceiveDemo from the IRremote examples.
3. Click Upload, then click Serial Monitor in the upper right corner of the IDE, and switch the baud rate from 9600 to 115200. Use a matching remote control to align with the infrared receiving module and press any key. When corresponding data appears, the module will function normally.

Screenshot of the Arduino Library Manager dialog box. It displays fields for Type, Topic, and a search bar. The library named 'IRremote' is shown, with an 'Install' button available. Another image shows the Serial Monitor output displaying infrared data, including protocol information.

Lesson 7: Photoresistor Program

This lesson provides code for using a photoresistor (light sensor) with Arduino.

#define ADpin A3
#define LED 13
int ADBuffer = 0;
void setup()
{
  pinMode(LED,OUTPUT);
  Serial.begin(9600); // The baud rate is 9600
}
void loop()
{
  ADBuffer = analogRead(ADpin); // Reading the AD value
  Serial.print("AD = ");
  Serial.println(ADBuffer);
  if(ADBuffer > 800) // If the ADBuffer value is larger than the set value, the illumination intensity is smaller than the set value
  {
    digitalWrite(LED,HIGH); // Light up LED
  }
  else
  {
    digitalWrite(LED,LOW); // Turn off LED
  }
  delay(500); // Delay 500ms
}

Lesson 8: Button Program

This lesson provides code for reading button inputs with Arduino.

#define KEY0 digitalRead(4)
#define KEY1 digitalRead(5)
#define KEY0_PRES 1
#define KEY1_PRES 2
void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
  int key;
  key=KEY_Scan(0);// Scan key
  if (key==1)
  { digitalWrite(LED_BUILTIN, HIGH); }
  if (key==2)
  { digitalWrite(LED_BUILTIN, LOW); }
}
u8 KEY_Scan(u8 mode)
{
  pinMode(4,INPUT_PULLUP);
  pinMode(5,INPUT_PULLUP);
  static u8 key_up=1;// Press the button to release the sign
  if(mode)key_up=1; // Support link
  if(key_up&&(KEY0==0||KEY1==0))
  {
    delay(10);// Jitter elimination
    key_up=0;
    if(KEY0==0)return KEY0_PRES;
    else if(KEY1==0)return KEY1_PRES;
  }else if(KEY0==1&&KEY1==1)key_up=1;
  return 0;// No key to press
}