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/* LiquidCrystal Library - Hello World Demonstrates the use a 16x2 LCD display. The LiquidCrystal library works with all LCD displays that are compati 阅读全文
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#include <Adafruit_NeoPixel.h> #define PIN 2 // input pin Neopixel is attached to #define NUMPIXELS 12 // number of neopixels in strip Adafruit_NeoPix 阅读全文
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/* Ping))) Sensor This sketch reads a PING))) ultrasonic rangefinder and returns the distance to the closest object in range. To do this, it sends a p 阅读全文
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/* Pitch follower Plays a pitch that changes based on a changing analog input circuit: * 8-ohm speaker on digital pin 9 * photoresistor on analog 0 to 阅读全文
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/* Multiple tone player Plays multiple tones on multiple pins in sequence circuit: * 3 8-ohm speaker on digital pins 6, 7, and 8 created 8 March 2010 阅读全文
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/* Melody Plays a melody circuit: * 8-ohm speaker on digital pin 8 created 21 Jan 2010 modified 30 Aug 2011 by Tom Igoe This example code is in the pu 阅读全文
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/* Keyboard Plays a pitch that changes based on a changing input circuit: * 3 pushbuttons from +5V to analog in 0 through 3 * 3 10K resistors from ana 阅读全文
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/* Sweep by BARRAGAN <http://barraganstudio.com> This example code is in the public domain. modified 8 Nov 2013 by Scott Fitzgerald http://www.arduino 阅读全文
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/* AnalogReadSerial Reads an analog input (potentiometer) on pin 0, prints the result to the serial monitor. OPEN THE SERIAL MONITOR TO VIEW THE OUTPU 阅读全文
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/* DigitalReadSerial Reads a digital input on pin 2, prints the result to the serial monitor This example code is in the public domain. */ int buttonS 阅读全文
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/* Arduino通过analogRead()函数读取模拟引脚0上的电位器读数控制LED闪灯频率 电路原理图： *电位器的中心引脚到连接到模拟输入0号引脚 *任意一侧接地，另一侧接5V */ int sensorValue = 0; void setup() { pinMode(A0, INPUT 阅读全文
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/* State change detection (edge detection) 状态变化检测（边缘检测） Often, you don't need to know the state of a digital input all the time, but you just need to 阅读全文
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/* 去抖动 每次输入引脚从LOW变为HIGH时（例如由于按钮按），输出引脚从LOW切换到HIGH或从HIGH切换到LOW。有两次触发之间的最小延迟以消除电路抖动（即忽略噪声）。 电路： * LED从引脚13接地 * 按钮连接到引脚2至+ 5V * 10K电阻从引脚2接地 *注意：在大多数Ardui 阅读全文
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项目地址：https://www.tinkercad.com/things/fxAUiYvu7aG /* Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a 阅读全文
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项目地址：https://www.tinkercad.com/things/fuEoV1EqLvS /* 渐显渐隐 Arduino使用analogWrite函数在9号引脚上产生PWM脉冲宽度调制，使得发光二极管LED渐显渐隐， 如果你想换一个引脚，请使用具有PWM输出能力的引脚，在多数板子上以波浪号 阅读全文
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项目地址：https://www.tinkercad.com/things/e83v3mZL4Ua 阅读全文
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项目地址：https://www.tinkercad.com/things/fxAUiYvu7aG const int buttonPin = 2; //定义GPIO2输入开关按钮电平 const int ledPin = 7; //定义GPIO7为电平输出 int buttonState = 0; 阅读全文