AnalogInOutSerial- Read an analog input pin, map the result, and then use that data to dim or brighten an LED. AnalogWriteMega- Fade 12 LEDs on and off, one by one, using an Arduino Mega board. Calibration- Define a maximum and minimum for expected analog sensor values. Fading- Use a...
const int analogInPin = A0; // Analog input pin that the potentiometer is attached to const int analogOutPin = 9; // Analog output pin that the LED is attached to int sensorValue = 0; // value read from the pot int outputValue = 0; // value output to the PWM (analog out) void...
所以是一个三键电子琴? 其中用了个头文件"pitches.h"里面是一系列#define,应该是音调(NOTE_A4是某个音调么?)和频率的对应关系。然后用了一个 tone(引脚,频率,持续时间)的方法输出方波信号。 toneMelody 在大循环外面按照数组noteDurations的持续时间输出输出melody中的方波,自动播放一次旋律。和上面的一样,用了"p...
Analog Input: Use a potentiometer to control the blinking of an LED. Analog Write Mega: Fade 12 LEDs on and off, one by one, using an Arduino Mega board. Calibration: Define a maximum and minimum for expected analog sensor values. Fading: Use an analog output (PWM pin) to fade an LED...
#defineMQ2pin (0)floatsensorValue;//定义变量 在设置功能中:我们初始化与PC的串行通信,并等待20秒以允许传感器预热。 Serial.begin(9600);//sets the serial port to 9600Serial.println("Gas sensor warming up!"); delay(20000);//allow the MQ-6 to warm up ...
#define inputPin2 A9 #define motorPin1 5 #define motorPin2 6 Servo motor1; Servo motor2; void setup() { motor1.attach(motorPin1); motor2.attach(motorPin2); motor1.write(motorSpeedTransfer(0)); motor2.write(motorSpeedTransfer(0)); ...
#define SYS_VOLTAGE 5000// ADC参考电压 /* I/O define */ constintiled=3;//drive the led of sensor constintvout=0;//analog input /* variable */ floatdensity,voltage; intadcvalue; /* private function */ intFilter(intm) { staticintflag_first=0,_buff[10],sum; ...
//使用于通用的Arduino的引脚模式定义typedefenum{INPUT=0x0,OUTPUT=0x1,INPUT_PULLUP=0x2,INPUT_PULLDOWN=0x3,}PinMode;//RPI Pico的引脚模式定义/* Define mock symbols to nullify PinMode definitions */#define PullNone TempPullNone#define PullUp TempPullUp#define PullDown TempPullDown#define OpenDra...
#definePIN_LED16//定义LED灯:PIN_LED所对应的引脚为16号#defineKEY_FLASH0//定义KEY_FLASH 对应0号引脚,其实就是FLASH按键位置voidsetup(){Serial.begin(115200);Serial.setDebugOutput(true);pinMode(PIN_LED,OUTPUT);//初始化PIN_LED引脚模式为输出pinMode(KEY_FLASH,INPUT);//初始化Flash按键模式为输入dig...
#define MG_PIN (0) //define which analog input channel you are going to use #define BOOL_PIN (2) #define DC_GAIN (8.5) //define the DC gain of amplifier /***Software Related Macros***/ #define READ_SAMPLE_INTERVAL (50) //define how many samples you are going to...