【雕爷学编程】Arduino动手做(149)---MAX9814咪头传感器模块4 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...
}//END,RS485串口外设 连接 Modbus RTU//Set up ModbusRTU client.//- provide onData handler functionMB.onDataHandler(&handleData);//回调函数//- provide onError handler functionMB.onErrorHandler(&handleError);//回调函数//Set message timeout to 2000msMB.setTimeout(2000);//Start ModbusRTU bac...
10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true|false(逻辑层定义) 10.4 integerconstants(整数常量) 10.5 floating point constants(浮点常量) 十一、数据类型 11.1 void 11.2 boolean(布尔) 11.3 char(有号数据类型) 11.4 unsignedchar(无符号数据类型) 11.5 byte(无符号...
const unsigned int sampling_period_us = round(1000000 * (2.0 / SAMPLING_FREQUENCY)); // Sampling period (doubled to account for overclock) int8_t data[64], buff[32]; // used to store FFT input/output and past data unsigned long microseconds; // used for timekeeping int summ, avg; ...
arrayName[index] arrayName 为数组名称,index 为下标。例如,a[0] 表示第0个元素,a[3] 表示第3个元素 实例: voidsetup(){Serial.begin(9600);inta[6]={299,34,92,100};// 定义数组for(inti=0;i<6;i++){//串口监视器输出数组元素Serial.print("a[");Serial.print(i);Serial.print("] =");...
const float log_scale = 64. / log(64. / SCALE_FACTOR + 1.); // Attempts to create an equivalent to SCALE_FACTOR for log function #endif const float coeff = 1. / TIME_FACTOR; // Time smoothingcoefficients(used to factor in previous data) ...
Arduino Pin APDS-9930 Board Function 3.3V VL 据说用作参考电压,得接上 3.3V VCC Power GND GND Ground A4 SDA I2C Data A5 SCL I2C Clock 2 INT Interrupt 10 - LED 1. 2. 3. 4. 5. 6. 7. 8. 9. 效果图 Arduino+APDS9930 实现手势控制灯亮灭、调光等 源码 通用部分 APDS9930.cpp /** ...
extractLetters(morseCode.substring(startPos1, endPos1)); // This function would extract Letter as name suggest and would convert code to text SIMPLE! startPos1 = endPos1 + 1; if (startPos1 == morseCode.length()) { break; } endPos1 = morseCode.indexOf('#', startPos1); ...
Input Arguments expand all port— Hardware port character vector | string array board— Name of Arduino enabled board character vector | string array btaddress— Bluetooth address of the Nano 33 BLE, Nano 33 BLE Sense, Nano 33 IoT, MKR1010, HC-05, HC-06, ESP32-DevKitV1 or ESP32-DevKit...
(buttonConnect,INPUT_PULLUP);pinMode(buttonOn,INPUT_PULLUP);pinMode(buttonCapture,INPUT_PULLUP);pinMode(connectLED,OUTPUT);pinMode(onLED,OUTPUT);pinMode(captureLED,OUTPUT);digitalWrite(connectLED,LOW);digitalWrite(onLED,HIGH);digitalWrite(captureLED,LOW);}voidloop(){switch(isButtonPressed()){...