ADC0-ADC5 其实是作为 PC0-PC5 的第二功能存在的,分别对应 Arduino 定义 A0-A5。也正因为次,在 Arduino 的官方指南中提到,“The analog input pins can be used as digital pins, referred to as A0, A1, etc. ”。说的是,模拟输入口可以当数字口一样用。对于A0-A5来说,确实不错。但对于第一功能就...
digital input on pin 2 and prints the results to the serial monitor. The circuit: * Momentary switch attached from pin 2 to ground * Built-in LED on pin 13 Unlike pinMode(INPUT), there is no pull-down resistor necessary. An internal 20K-ohm resistor is pulled to 5V. This configuration...
We could add it to the circuit, but we can also use the Arduino Uno built-in LED, which maps to the digital I/O pin #13. We can write a program in this way:#define BUTTON_PIN 3 void setup() { pinMode(BUTTON_PIN, INPUT_PULLUP); pinMode(13, OUTPUT); digitalWrite(13, LOW);...
数字引脚(Digital pins)定义,INPUT和OUTPUT 数字引脚当作INPUT 或 OUTPUT都可以 。用pinMode()方法使一个数字引脚从INPUT到OUTPUT变化。 引脚(Pins)配置为输入(Inputs) Arduino(Atmega)引脚通过pinMode()配置为 输入(INPUT) 即是将其配置在一个高阻抗的状态。配置为INPUT的引脚可以理解为引脚取样时对电路有极小的...
pinMode(A5, INPUT); //Declare4-13 Digital Pins as Output Pins (For controlling 10 x ROHM LEDs) pinMode(4, OUTPUT); pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT);
All 6 analog input pins are available. They can also be used as digital pins (pins #14 thru 19) Digital pin 2, and 13 are not used. The following pins are in use only if the DC/Stepper noted is in use:Digital pin 11: DC Motor #1 / Stepper #1 (activation/speed control)Digital ...
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) ...
The wire for digital pin 4 is on the same side as the ground. The other side of the button is connected to VCC (5V) directly. When you run the program using pinMode(BUTTON_PIN, INPUT); Great! Now the default value when the button is not pressed is LOW. And in this example when...
将指定的引脚配置成输出或输入。详情请见digitalpins。 语法: pin Mode(pin, mode) 参数: pin:要设置模式的引脚 mode:INPUT或OUTPUT 返回 无 例子: led Pin=13//LED连接到数字脚13 voidsetup() { pin Mode(led Pin, OUTPUT) ;//设置数字脚为输出 } voidloop() { digital Write(ledPin, HIGH) ;//点...
6.数字输入输出引脚(Digital I/O Pins): 有14个数字输入/输出引脚,分别标记为 D0-D13,可以连接传感器和执行器等设备。 7.PWM引脚: 其中6个数字引脚(D3,D5,D6,D9,D10,D11)可以产生PWM信号,用于控制电机或LED的亮度。 8. 电源引脚(Power Pins): Arduino UNO R3有3个电源引脚,包括5V,3.3V和GND。