[导读]HC-SR04是一款超声波测距模块。它的外观看起来像一双眼睛，这就是为什么它经常被安装在机器人汽车或机器昆虫上作为他们的“视觉”。 HC-SR04是一款超声波测距模块。它的外观看起来像一双眼睛，这就是为什么它经常被安装在机器人汽车或机器昆虫上 ...

HC-SR04 超声波测距模块可提供 2cm-400cm的非接触式距离感测功能，测距精度可达高达3mm；模块包括超声波发射器、接收器与控制电路。 基本工作原理： (1)采用 IO 口 TRIG 触发测距，给最少 10us 的高电平信呈。 (2)模块自动发送 8 个 40khz 的方波，自动检测是否有信号 ...

Default value for maximum measurement distance is 4m, since HC-SR04 sensor can't measure reliably beyond that. However, if you are using another sensor or if you you don't care about distances larger ...

超声波洗手液电路通过反射的超声波检测人手的存在，并暂时触发继电器电磁泵，将消毒液分配到用户的手上。 该项目使用流行的HC-SR04超声波传感器模块来实现所需的传感功能。 使用 HC-SR04 HC-SR04超声波传感器模块由几个专用超声波换能器组成，额定工作频率约 ...

Basic Crew: Three officers (pilot, co-pilot, combat system officer) and two enlisted loadmasters The HC-130J Combat King replaces HC-130P/Ns as the only dedicated fixed-wing Personnel Recovery ...

The PIR motion sensor consists of 3 pins-VCC, GND, and the Data Output Pin. VCC is the power pin of the module. Out is the data Output pin of the module.it goes high when motion is detected. GND is ...

发出 8 个 40kHz 周期电平并检测回波。一旦检测到有回波信号则输出回响信号 。 回响信号的脉冲宽度与所测的距离成正比 ...

This guide is meant for users who have just started using Windows 10 OS and will also help seniors who may be new to the PC. It will show you how to use Windows 10 – right from how to sign-in to how ...