azimuth = compass.getAzimuth(); byteb = compass.getBearing(azimuth); } 要获取传感器指向方向的12点文字表示,可以致电getDirection(azimuth);。这将产生一个char数组[3],其中的字母代表每个方向。由于我们无法返回数组,因此需要通过引用传递值。 1 2 3 4 5 voidloop(){
String lndSpeed_old;//速度 String gpsTime_old;
Learn how to use relay with Arduino, how relay works, how to connect relay to Arduino, how to code for relay, how to program Arduino step by step. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to
lastTime = 0; float dt; //微分时间 int16_t ax, ay, az, gx, gy, gz; //加速度计陀螺仪原始数据 float aax=0, aay=0,aaz=0, agx=0, agy=0, agz=0; //角度变量 long axo = 0, ayo = 0, azo = 0; //加速度计偏移量 long gxo = 0, gyo = 0, gzo =...
floatelapsedTime,currentTime,previousTime;intc=0;voidsetup(){Serial.begin(19200);Wire.begin();// Initialize comunicationWire.beginTransmission(MPU);// Start communication with MPU6050 // MPU=0x68Wire.write(0x6B);// Talk to the register 6BWire.write(0x00);// Make reset - place a 0 into ...
// Wait a few seconds between measurements. 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"); ...
// Check whether we keep receving data, or we have a connection between the two modulescurrentTime = millis();if( currentTime - lastReceiveTime >1000) {// If current time is more then 1 second since we have recived the last data, that means we have lost connectionresetData();// If...
float time = 0.0; int sample = 0; float totalCharge = 0.0; float averageAmps = 0.0; float ampSeconds = 0.0; float ampHours = 0.0; float wattHours = 0.0; float amps = 0.0; int R1 = 11660; // Resistance of R1 in ohms int R2 = 4620; // Resistance of R2 in ohms ...
/*Time:20211127Author: 2345VOR项目示例:通过MQTT协议发送on或off控制开关,温湿度上传巴法云参考文献:https://www.cnblogs.com/bemfa/p/14590133.html*/#include <ESP8266WiFi.h>//默认,加载WIFI头文件#include "PubSubClient.h"//默认,加载MQTT库文件#include <ESP8266httpUpdate.h>//自动升级库 https://bb...
The sketch in this recipe uses a separate line of source code for each print statement. This can make complex print statements bulky. For example, to print the following line: At 5 seconds: speed = 17, distance = 120 you’d typically have to code it like this: Serial.print("At ");...