This project implements a simple alarm clock using an Arduino, a DS1307 real-time clock (RTC), and a buzzer. The current time is displayed on a 16x2 LCD screen, and an alarm is set to activate the ...

This is a basic fire alarm system built using an LM35 temperature sensor, LEDs, and a buzzer, all connected to an Arduino Uno. The system triggers an alarm when a high temperature is detected. Red ...

Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

今回はヘッダーについて学びながら、パッシブブザーを使って音色を奏でます。 パッシブブザーとは、PWMの説明で使用した矩形波と呼ばれる形の電圧を入力することによって、デューティー比に対応した音を発生させるブザーです。 Arduinoでは、パッシブ ...