15LED Positive3V3 / 5V3V3 / VIN背光LED灯引脚正极 16LED NegativeGNDGND背光LED灯引脚负极 不带I2C...
To build the circuit, connect one end of the resistor to pin 13 of the board. Connect the long leg of the LED (the positive leg, called the anode) to the other end of theresistor. Connect the short leg of the LED (the negative leg, called the cathode) to the board GND, as shown...
Arduino 语法手册 #Arduino 语法 setup() 初始化函数 loop() 循环体函数 控制语句类似于C //if if...else for switch case while do... while break continue return goto 扩展语法类似于C //;（分号） {}（花括号） //（单行注释） /* */（多行注释） #define #include 算数运算符类似于C //=（...
Atmega引脚可以向其他设备/电路提供(提供正电流positive current )或倒灌(提供负电流 negative current )达40毫安(mA)的电流。这使 得它们利于给LED供电,而不是读取传感器。输出(OUTPUT引脚被短路的接地或 5V电路上会受到 损坏甚至烧毁。Atmega引脚在为继电器或电机供电时,由于电流不足,将需要一些外接电路来实现 供电...
9.6 &= (compound bitwise and) 9.8 |= (compound bitwise or) 变量部分 十、常量 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 integer constants(整数常量) 10.5 floating point constants(浮点常量) ...
Atmega引脚可以向其他设备/电路提供(提供正电流positive current)或倒灌(提供负电流negative current)达40毫安(mA)的电流。这使得它们利于给LED供电,而不是读取传感器。输出(OUTPUT)引脚被短路的接地或5V电路上会受到损坏甚至烧毁。Atmega引脚在为继电器或电机供电时,由于电流不足,将需要一些外接电路来实现供电。 返回...
Arduino 的程序可以划分为三个主要部分:结构、变量(变量与常量)、函数。 Arduino 的程序可以划分为三个主要部分:结构、变量(变量与常量)、函数。 结构部分 一、结构 1.1 setup() 1.2 loop() 二、结构控制 2.1 if 2.2 if...else 2.3 for 2
这使得它们格外利于读取传感器,而不是为LED 供电。引脚(Pins)配置为输出(Outputs)引脚经过pinMode()配置为 输出(OUTPUT) 即是将其配置在一个低阻抗的状态. 这意味着它们能够为电路提供充分的电流 .Atmega 引脚能够向其他设备 /电路提供(提供正电流positive current)或倒灌(提供负电流negative current)达 40 毫安(...
Brown County Library WARNING: Please read these instructions entirely before using the Arduino and components found in this kit. Plugging in components incorrectly can result in damage and possible injury. If any components begin to feel warm, unplug power source immediately and re-check your work...
Connect the long leg of the LED (the positive leg, called the anode) to the other end of the resistor. Connect the short leg of the LED (the negative leg, called the cathode) to the GND. In the diagram below we show an UNO board that has D13 as the LED_BUILTIN value. 如果想...