Wireless sensor networks are nothing new to Hackaday, but [Felix]’s wireless PIR sensor node is something else entirely. Rarely do we see something so well put together that’s also so well designed ...

SmartGate is an Arduino-based automatic door opening system that uses a PIR (Passive Infrared) motion sensor to detect human presence and automatically open or close a door via a servo motor. This ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

Halloween is coming up faster than you think: time to dust off the gravestones and the zombie lawn decorations! This year you may want to add a little something extra to give the trick-or-treaters a ...

定年後の趣味として諸先輩方の製作記事を読み、電子工作を始めました。子供の頃に戻ったようで楽しく気が付けば、5年が過ぎていました。 最初に手掛けたのが、当時流行っていたオンプレミスIoTでした。 現在では、IoTという言葉はすっかり影を潜めて ...

Sometimes, projects start in somewhat unlikely places. This one began when [Istvan Raduly] scored a fake raven at a neighbor’s garage sale and decided to turn it into a thunder-and-lightning ...