It runs on mains power and uses a 100dB piezo buzzer for ear-splitting effectiveness to alert [Adam] whenever the freezer is at 32°F/0°C or above. If the Arduino loses sight of the DHT22 ...

Customer using LM386 for piezo speaker target for mosquito application. He using LM386 as max gain 200, and input is 12V and output freq is max up to 100kHz, but sound level is a little bit low so ...

This script let's you play the Tetris Theme A through a Buzzer (Piezo) style speaker. Feel free to add more songs, a description on how to is in the commentary. Make sure to select the correct GPIO ...

YouTuber [MechnicalRedPanda] has recreated a DIY STM hack we covered about ten years ago, updating it to be primarily 3D-printed, using modern electronics, making it much more accessible to many ...

This are speakers are frequently used to generate sound in digital quartz watches and other electronic devices. Piezo has been used in this project to output sound when the push button is pressed.