二、本次主角:ESP8266-NodeMCU1.ESP8266-NodeMCU简介2.实物图解三、项目实践1、Arduino IDE搭建①软件下载:[官网IDE下载](://arduino.cc/en/software)②IDE配置2.板子驱动下载与安装3、代码实现及烧录上机总结 前言闲来无事想了解一下arduino,刚好之前屯了个板子( esp8266 arduino配置网页 mcu 嵌入式硬件 iot 物...
float x = 2.9; // A float type variable int y = x; // 2 If, instead, you want to round off during the conversion process, you need to add 0.5: float x = 2.9; int y = x + 0.5; // 3 or use the round() function: float x = 2.9; int y = round(x)...
float round_to_dp( float in_value, int decimal_place ) //begin { float multiplier = powf( 10.0f, decimal_place ); in_value = roundf( in_value * multiplier ) / multiplier; return in_value; } int getMedianNum(int bArray[], int iFilterLen) { int bTab[iFilterLen]; for (byte i ...
1. 使用的硬件 首先，我们需要选择一款PM2.5的传感器，通过淘宝搜索发现，PM2.红外测距是一种非直...
A Beginner's Guide to Arduino: After some years of experimenting with Arduino, I decided that the time has come to share the knowledge I've acquired. So I here it goes, a guide to Arduino, with the bare basics for beginners and some more advanced explana
long duration; float distanceCm; float distanceInch;The duration variable saves the travel time of the ultrasonic waves (time elapsed since transmission and reception of the pulse wave). The distanceCm and distanceInch, as the names suggest, save the distance to an object in centimeters and ...
My VS Code have a problem:identifier "Serial" is undefined but I upload program to my arduino nano OK. this is my arduino file: void setup(){ pinMode(LED_BUILTIN, OUTPUT); Serial.begin(9600); } void loop(){ digitalWrite(LED_BUILTIN, HIGH...
floatround_to_dp(floatin_value,intdecimal_place) { floatmultiplier=powf(10.0f,decimal_place); in_value=roundf(in_value *multiplier)/multiplier; returnin_value; } Code Explanation 1 2 3 #include <Wire.h> #include <LiquidCrystal_I2C.h> ...
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Thursday, March 3, 2016 5:32 PMHello,I am creating a script to auto-detect the arduino on the serial port. For some reason the code I found for this only displays ONE port even if there are TWO ports available. Arduino is on COM5. Any help will be greatly appreciated....