是将数字输入引脚设置为INPUT。模拟口当数字口使用时，有另外的引脚编号的。LED_BUILTIN 是内建的函数， 默认是13引脚。Built-in LED indicator light或 Built-in LED pilot lamp内置LED，通常是13。新版arduino IDE里面LED_BUILTIN函数 UNO默认为pin13了
当您打开Arduino IDE时,为了正确设置IDE,请转到:工具》端口》……,然后选择带有Arduino Uno名称的端口。 对于Windows,它应该类似于“ COM4(Arduino/Genuino Uno)”。 对于Linux,它类似于“/dev/ttyACM0(Arduino/Genuino Uno)”。 ,对于操作系统“/dev/cu.usbmodem1461(Arduino/Genuino Uno)”。 然后转到工具...
* Note: Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is ...
- Note: Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is ...
- Note: Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used.
LED: 13. There is a built-in LED driven by digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. TWI: A4 or SDA pin and A5 or SCL pin. Support TWI communication using the Wire library. The Uno has 6 analog inputs, labeled A0 through ...
登录后复制#defineDATA_PIN 3//此处需要改为你所接的UNO控制引脚 修改灯带类型: 登录后复制#defineLED_TYPE WS2811//将原来的WS2811改为WS2812 修改使用的灯带的灯珠数量: 登录后复制#defineNUM_LEDS 64//此处修改为实际的LED数量 完整代码形式: 登录后复制#include< FastLED.h >FASTLED_USING_NAMESPACE// Fas...
利用pinMode()、digitalWrite()和digitalRead()功能,Uno上的14个数字引脚都可用作输入或输出。它们的工作电压为5V。每个引脚都可以提供或接受最高40 mA的电流,都有1个20-50 kΩ的内部上拉电阻器(默认情况下断开)。此外,某些引脚还具有特殊功能:· 串口:0(RX)和1(TX)。用于接收(RX)和发送(TX)TTL串口数据。
回顾:用arduino电量led首先需要pinmode函数,pinmode(LED_BUILTIN,OUTPUT),为其配上小电源;接下来需要开关,则用digitalwrite函数,digitalwrite(LED_BUILTIN,HIGH)HIGH相当于开关闭合。 1-10 数字输出1 - 学用LED P11 - 01:27 LED=Light Emitting Diode
LED: 13. There is a built-in LED driven by digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. TWI: A4 or SDA pin and A5 or SCL pin. Support TWI communication using the Wire library. The Uno has 6 analog inputs, labeled A0 through ...