@ic_china: 🤔 这是什么鬼东西？其实是个液位传感器 What is this weird thing? It’s actually a liquid level sensor 💧 三四块钱的小模块 A tiny sensor costing only a few dollars 📡 可以隔着容器检测液体位置 Detects liquid level through the container wall 🚨 液位低于警戒线就会报警 Triggers an alarm when liquid level is too low 🔔 一个蜂鸣器就能实现报警 A buzzer makes the alarm sound 🧠 再配一个主控板 Add a controller board 🛠 就成了液位报警系统 And it becomes a liquid level alarm system 💰 全部成本十几块钱 Total cost is only around a few dollars ⚡ 原理简单却很实用 Simple principle but very practical 🤓 好玩的电子项目很多 There are many fun electronics projects 📩 喜欢玩的老铁欢迎加入一起玩 DIY lovers are welcome to join WhatsApp 👉 https://wa.me/85252099651 #电子DIY #传感器 #smarthome #DIY #IoT

朱曉敏(Mina - IC/China)

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Friday 06 March 2026 15:29:52 GMT