10. Reed Switch Sensor Preparation Six different colored DuPont wires (male to female) Reed switch sensor module Bi-color LED module (Note: For the list of Raspberry Pi and related accessories, please refer to previous articles on the public account.) Experiment Content Use the reed switch sensor module as an input device for the Raspberry Pi. … Read more
In 2019, I purchased the “Xiaomi Mijia Smart Home Kit,” which I truly started using in early 2020. At one point, I noticed on the app: “Door Magnet Sensor” — “Battery” — “Battery Low”; so I quickly bought a battery to replace it, but the app still indicated low battery; however, in the “Device Consumables” … Read more
01 Introduction A reed switch, also known as a reed relay, is a type of sensor that controls the opening and closing of a switch through the application of a magnetic field. It was invented at Bell Labs in 1936, consisting of two ferromagnetic metal strips placed within a glass tube filled with inert gas. … Read more
The bathroom is a place we visit every day. Turning the light on and off when entering and exiting can be quite a hassle. Sometimes, we forget to turn off the light, wasting electricity. Here, we introduce a door-controlled switch circuit that is simple to make. After installing this door-controlled switch in your home bathroom, … Read more