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 = (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); // ...
pinMode(Cap_In, OUTPUT); Serial.begin(9600); lcd.setCursor(0,0); lcd.print(“ Capacitance ”); lcd.setCursor(0,1); lcd.print(“ Meter ”); delay(2000); } void cap() { microseconds=micros()-microseconds; capacitance=1.443*microseconds/300; capacitance = capacitance/1000; Serial.print(...
* @param usec * Optionally pass pull-up time (in microseconds) before DHT reading * starts. Default is 55 (see function declaration in dht.h). * @return If read data successfully return DHTLIB_OK, * if the data are not complete return DHTLIB_ERROR_CHECKSUM, * if read timeout return ...
形式:void delay(unsigned long time)void delay Microseconds(unsigned long time)参数:time为延时的时长。delay()与delayMicroseconds()都用于延时,不同的是,delay()函数的参数以“毫秒”为单位,常用于长时间的延时;而delayMicroseconds()的参数以“微秒”为单位,用于进行精确延时,例如,数据传输的时序控制。
37款传感器与执行器的提法,在网络上广泛流传,其实Arduino能够兼容的传感器模块肯定是不止这37种的。鉴于本人手头积累了一些传感器和执行器模块,依照实践出真知(一定要动手做)的理念,以学习和交流为目的,这里准备逐一动手尝试系列实验,不管成功(程序走通)与否,都会记录下来—小小的进步或是搞不掂的问题,希望能够抛砖引...
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; ...
#define RADAR A0 // RADAR inut is attached to A0 #define MICRODELAY 100 // 100microseconds ~10000hz #define MAXINDEX 1024 // 10 bits #define TOPINDEX 1023 // 10 bits bytecollect[MAXINDEX]; intmean; intminimum; intmaximum; inthysteresis;// 1/16 of max-min ...
*/#defineRADARA0// RADAR inut is attached to A0#defineMICRODELAY100// 100microseconds ~10000hz#defineMAXINDEX1024// 10 bits#defineTOPINDEX1023// 10 bitsbyte collect[MAXINDEX];int mean;int minimum;int maximum;int hysteresis;// 1/16 of max-minbool currentphase;// are value above mean + ...
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 ...