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); // De...
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:
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...
StepFast(800,2000); //steps,delay in microseconds delay(5000); } 注意: 此代码在〜300RPM的中等步进速度(步进率为1ms左右)下可以很好地工作,因为您尝试将其提高到1000RPM,除非电压升高,否则它将开始丢失步骤,但是,如果以》 5V在60RPM(5ms)下运行电动机,则L298N会开始变得很热。 步骤6:事后的想法和补充...
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; ...
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(1500);} 复制代码 这里我们只需要包含库，定义伺服对象，并使用attach()函数定义伺服所连接的引脚...
#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; ...