emergency push button ... it also plays the buzzer sound from the actual game, too ... (machine translation) and has built up an easy-to-implement version on Raspberry Pi, Arduino, and ESP8266 ...

In this version, you'll be using a keypad instead of a simple push button to deactivate the alarm. After the buzzer goes off, you need to press the star (*) button on the keypad before inputting ...

If you are just learning how to do Arduino projects or want to start, ... with only an Arduino UNO, ultrasonic sensor, force-sensitive resistor (or push button), and piezo buzzer.

But if you can push your button while your yellow LED is lit, ... Inside the cool laser-cut box is an Arduino Uno and a 9V battery, plus a current-limiting resistor and the all-important buzzer.

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 ...

If so, Make Projects user Clement Storck built a simple Arduino powered notification system that sends him a text message and an email with a photo every time someone rings the doorbell. The ...