We may earn commission from links on this page, but we only recommend products we love. Promise. LED face masks have become the most popular at-home skincare tools—and for good reason. Red-light ...

This project demonstrates a low-cost intelligent traffic signal system using Arduino and ultrasonic sensors to reduce congestion caused by fixed-timer traffic lights. Four HC-SR04 sensors detect ...

Learn how to install the Harbor Freight Solar LED Security Light quickly and easily with this step-by-step guide. Perfect for DIY enthusiasts and anyone upgrading home security. #SolarSecurityLight ...

Star-favored, board-certified aesthetics physician Dr. Glenicia Nosworthy explains how to choose the right high-tech tool for every skin concern. By Natalie Alcala, Danielle Directo-Meston, Erin ...

当环境光线变亮时，又自动关闭灯带。 连接 Arduino ↔ LDR 分压 ↔ 继电器模块 ↔ 12V 灯带。 热熔胶枪（可选） 用于固定 LDR 位置或整理线材，提升结构可靠性。 A0 点的电压随光照变化而变化，Arduino 通过 analogRead(A0) 读到 0–1023 之间的数值，即可反映当前亮度。

This system uses a colour-changing LED (RGB LED/tri-colour LED) that switches to a new colour every 5 seconds. Simultaneously, the colour name is displayed on an OLED mini screen (SSD1306). This ...

Building IoT projects with touchscreens used to be a headache, involving numerous components, messy wiring, and endless troubleshooting. But the ESP32-S3 Box-3 makes things way easier. It is an all-in ...