cm = (duration/2)/29.155; // Divide duration in half (due to round trip), then convert distance to centimeters (1cm per 29.155 microseconds), assign to cm variable Serial.print(cm); // Print distance in cm to serial monitor Serial.print(“cm”); Serial.println(); delay(100); // ...
Parameters of program functions: for example, in the time function: parameters of the delay function: ms: pause time, the time unit is milliseconds (unsigned long data), delay Microseconds function parameters: us: pause time, the time unit is microseconds (unsigned long data), millis, mircros...
cm = microsecondsToCentimeters(duration); Serial.print(cm); Serial.print("cm"); Serial.println(); delay(1000); } longmicrosecondsToCentimeters(longmicroseconds) { //The speed of sound is 340 m/s or 29 microseconds per centimeter. //The ping travels out and back, so to find the distance...
digitalWrite(TRIGGER_PIN,LOW); unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS)。 unsigned int dist = sonar.convert_cm(uS); // Convert into centimeters if(dist》=200 || dist《=0){ lcd.clear(); lcd.setCursor (0,1); // go to start of 2nd line...
#define RADAR A0 // RADAR inut is attached to A0 #define MICRODELAY 100 // 100microseconds ~10000hz #define MAXINDEX 1024 // 10 bits #define TOPINDEX 1023 // 10 bits byte collect[MAXINDEX]; int mean; int minimum; int maximum; ...
delay(2000); intret=dht11.read(); if(ret==DHTLIB_ERROR_CHECKSUM) { Serial.println("(E) Checksum failed"); return; } elseif(ret==DHTLIB_ERROR_TIMEOUT) { Serial.println("(E) Read time out"); return; } Serial.print("Humidity: "); ...
delay(ms) 暂停晶片执行多少毫秒 范例:delay(500); //暂停半秒(500毫秒) delay Microseconds(us) 暂停晶片执行多少微秒 范例:delayMicroseconds(1000); //暂停1豪秒 数学函式 三角函数以及基本的数学运算 min(x, y) 回传两数之间较小 范例:val = min(10,20); // 回传10 ...
cm = microsecondsToCentimeters(duration); Serial.print(inches); Serial.print("in, "); Serial.print(cm); Serial.print("cm"); Serial.println(); delay(100); } long microsecondsToInches(long microseconds) { return microseconds / 74 / 2; ...
9、出引脚速度控制-使用Arduino的数字输出引脚-产生脉冲信号用EasyDriver驱动双极性步进电机voi d setup () pirJilode (dirFin, 0UTF1.IT):pirJilode(5 tapper Fin, OUTFUT): int stepperPin = 5;voi d loop 0 step (triiSj 1600): del ay (500);step (fals 1600*5):delay (500):voi d step (...
(sp1,LOW);//将舵机接口电平至低delay(20-val1/1000);}//servopulse函数部分到此结束void setup(){pinMode(sp1,OUTPUT);//设定舵机接口为输出接口//设置两组串口波特率Serial.begin(9600);Serial.println("servu=o_seral_simple ready" ) ;//看电调说明书,设置油门行程时,一开始需要把遥控器打到最高点...