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邱老师
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Posts: 186

开发板实验首页 Dec 23, 2020 14:07:40 GMT

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LED闪烁
程序：blink
板载LED接了上拉电阻，所以低电平才能点亮，也就是说13口输出低电平时，LED才会亮，这与ARDUINO板载13口LED正好相反
另一个办法是，直接把LED接口接地，LED就能点亮。
arduino教程链接开发板教程链接

舵机
程序：sweep
板载两只舵机接口，接ARDUINO D9接口
注意舵机控制信号是PWM信号，只能接PWM拉口
arduino教程链接开发板教程链接

无源蜂鸣器
程序：tonePitchFollower
示例用的是光敏传感器，这里用了可调电位器
蜂鸣器的插座在继电器的左侧插座最上面一个，名字叫B1
可调电阻是W3和W4
arduino教程链接开发板教程链接

按键
程序：DigitalInputPullup
LED的正极通过上拉电阻接到5V电压，正极呈高电平，按下按钮后，LED负极接地，导通，LED点亮，ARDUINO内置上拉电阻，可以通过设置D口的工作模式启用
pinMode(2, INPUT_PULLUP);arduino教程链接开发板教程链接

A口输入参数控制LED亮度
程序：AnalogInOutSerial
转动电位器，LED的亮度会改变
arduino教程链接开发板教程链接

呼吸灯：PWM应用
程序：fading
通过输出pwm信号，使灯产生渐变
arduino教程链接开发板教程链接

Last Edit: Feb 18, 2021 18:48:43 GMT by 邱老师

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