English
全部
搜索
图片
视频
地图
资讯
Copilot
更多
购物
航班
旅游
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最佳匹配
最新
新浪网
2 年
基于PIR传感器的安全警报
在这个简单的 DIY 项目中,我将向您展示如何设计和实现基于 PIR传感器的安全警报系统。我设计的这个电路使用 Arduino 作为主控制器,当然还有 PIR传感器本身。此外,我还使用了UM3561IC(警报器发生器IC),通过扬声器产生必要的警报声。 通常,在家庭、商店 ...
当前正在显示可能无法访问的结果。
隐藏无法访问的结果
今日热点
Florida's CAIR vows lawsuit
Court allows release of docs
High schooler killed in fight
Admin threatens funding
Flips GA state House seat
Sister-in-law died by suicide
Nnena Kalu wins Turner Prize
On campaign finance limits
Sykes stabbed to death
To launch new law firm
Names chief of revenue
Bringing zero-sugar cookies
FDA probes into adult deaths
Upper West Side building fire
Colts sign 44-yr-old QB?
Wins Miami mayor's race
ACLU sues DOJ
GA state senator resigns
Gave $7.1B to nonprofits
US jets fly near Venezuela
DOJ can unseal records
Released from prison early
Woman posed as heiress?
Ex-education secretary dies
France on team charters
Shooting at KY university
Buildings collapse in Morocco
SAVE plan to end soon?
Launches bid for Congress
$12B in aid for US farmers
To build $6B Alabama plant
Plane crash-lands on car
反馈