The reference to 37 sensors and modules has been widely circulated on the Internet. In fact, there must be more than 37 sensor modules compatible with Arduino. In view of the fact that I have accumulated some sensor and actuator modules on hand, according to the concept of true knowledge (must be hands-on), for the purpose of learning and communication, here I am going to try and do more experiments one by one.
[Arduino] 168 kinds of sensor module series experiments (data code + simulation programming + graphic programming)
Experiment 49: Active buzzer module low level triggers buzzer control board sound sensor smart car
Wiring diagram of Arduino experiment
Program 6: Fire Alarm Experiment
Open Source Graphics Programming (Mind+, Learning by Playing)
Experimental serial port return
Arduino experiment scene diagram
Several experiments on the passive buzzer module
Program 7: Alarm sounds with rising and falling tones
Arduino reference open source code
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
程序七：升降调的警报声
*/
#define BUZZER_PIN A0//无源蜂鸣器接A0
void setup() {
pinMode(BUZZER_PIN, OUTPUT);//设置A0为输出
}
void loop() {
for (int i = 200; i <= 800; i++) // 200HZ ~ 800HZ
{
tone(BUZZER_PIN, i);
}
delay(1000); //最大频率保持1s
for (int i = 800; i >= 200; i--) // 800HZ ~ 200HZ
{
tone(BUZZER_PIN, i);
delay(10);
}
}
Arduino experiment scene diagram
Program 8: Play a small melody that you may have heard before
(1) The experiment uses an additional file pitches.h. This file contains all pitch values for typical notes. For example, NOTE_C4 is intermediate C. NOTE_FS4 is F sharp, etc. This note sheet was originally written by Brett Hagman, on whose work the tone() command is based. You may find it useful whenever you want to make musical notes. To make the pitches.h file, click the button just below the serial monitor icon and choose New Tab, or use Ctrl+Shift+N. Then paste the following code:
and save it as pitches.h.
/*************************************************
* Public Constants
*************************************************/
#define
NOTE_B0 31#define NOTE_C1 33#define NOTE_CS1 35#define NOTE_D1 37#define NOTE_DS1 39#define NOTE_E1 41#define NOTE_F1 44#define NOTE_FS1 46#define NOTE_G1 49#define NOTE_GS1 52#define NOTE_A1 55#define NOTE_AS1 58#define NOTE_B1 62#define NOTE_C2 65#define NOTE_CS2 69#define NOTE_D2 73#define NOTE_DS2 78#define NOTE_E2 82#define NOTE_F2 87#define NOTE_FS2 93#define NOTE_G2 98#define NOTE_GS2 104#define NOTE_A2 110#define NOTE_AS2 117#define NOTE_B2 123#define NOTE_C3 131#define NOTE_CS3 139#define NOTE_D3 147#define NOTE_DS3 156#define NOTE_E3 165#define NOTE_F3 175#define NOTE_FS3 185#define NOTE_G3 196#define NOTE_GS3 208#define NOTE_A3 220#define NOTE_AS3 233#define NOTE_B3 247#define NOTE_C4 262#define NOTE_CS4 277#define NOTE_D4 294#define NOTE_DS4 311#define NOTE_E4 330#define NOTE_F4 349#define NOTE_FS4 370#define NOTE_G4 392#define NOTE_GS4 415#define NOTE_A4 440#define NOTE_AS4 466#define NOTE_B4 494#define NOTE_C5 523#define NOTE_CS5 554#define NOTE_D5 587#define NOTE_DS5 622#define NOTE_E5 659#define NOTE_F5 698#define NOTE_FS5 740#define NOTE_G5 784#define NOTE_GS5 831#define NOTE_A5 880#define NOTE_AS5 932#define NOTE_B5 988#define NOTE_C6 1047#define NOTE_CS6 1109#define NOTE_D6 1175#define NOTE_DS6 1245#define NOTE_E6 1319#define NOTE_F6 1397#define NOTE_FS6 1480#define NOTE_G6 1568#define NOTE_GS6 1661#define NOTE_A6 1760#define NOTE_AS6 1865#define NOTE_B6 1976#define NOTE_C7 2093#define NOTE_CS7 2217#define NOTE_D7 2349#define NOTE_DS7 2489#define NOTE_E7 2637#define NOTE_F7 2794#define NOTE_FS7 2960#define NOTE_G7 3136#define NOTE_GS7 3322#define NOTE_A7 3520#define NOTE_AS7 3729#define NOTE_B7 3951#define NOTE_C8 4186#define NOTE_CS8 4435#define NOTE_D8 4699#define NOTE_DS8 4978
(2) Arduino reference open source experimental code
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
程序八：播放一段以前可能听过的小旋律
接脚：蜂鸣器接D8
*/
#include "pitches.h"
// 旋律中的音符
int melody[] = {
NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
};
// 每個音的的拍子，4：4分音符，8：8分音符
int noteDurations[] = {
4, 8, 8, 4, 4, 4, 4, 4
};
void setup() {
// 遍历旋律的音符
for (int thisNote = 0; thisNote < 8; thisNote++) {
//計算每個音的長度，4分音符： 1000 / 4，8分音符：1000/8
int noteDuration = 1000 / noteDurations[thisNote];
tone(8, melody[thisNote], noteDuration);
// 每個音之間要停一小段時間，範例是建議拍子的長度加30%
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// 停止播放音调
noTone(8);
}
}
void loop() {
// 无需重复旋律
}
Program Nine: Play the pitch that changes according to the changing analog input (photoresistor module)
Arduino reference open source code
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
程序九：播放根据不断变化的模拟输入而变化的音高（光敏电阻模块）
接脚：蜂鸣器接D9，光敏电阻接A0
*/
void setup() {
// 初始化串行通信（仅用于调试）：
Serial.begin(9600);
}
void loop() {
int sensorReading = analogRead(A0);// 读取传感器
// 打印传感器读数，这样你就知道它的范围
Serial.println(sensorReading);
// 映射模拟输入范围（在这种情况下，来自光敏电阻的 400 - 1000）
//到输出音高范围（120 - 1500Hz）
int thisPitch = map(sensorReading, 400, 1000, 120, 1500);
tone(9, thisPitch, 10);// 播放音高
delay(1); // 读取之间的延迟以确保稳定性
}
Experimental serial port return
Arduino experiment scene diagram
Program 10: Play pitch-shifted sound
Experiment open source simulation programming (Linkboy V4.63)
