Figure an Arduino most matches the "Other" category. To be specific, it isn't an Arduino brand, it is a DigiSpark, but the trouble isn't with the device itself. The problem is with a buzzer. I got ...

This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

Arduino Scketch. int piezoPin = 8; // Declaring Piezo Buzzer on Pin 8 int ldrPin = 0; // Declaring LDR on Analog Pin 0 int ldrValue = 0; // Reading different values from the LDR void setup() { } void ...

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...