When fixed to a metallic diaphragm and excited with an alternating voltage, the diameter of the disc varies by a small amount, this causes dishing of the diaphragm which gives a much louder sound.

Create a folder in your Arduino libraries folder called Melody and clone this repo into that folder. The root of your Melody folder should contain Melody.h and the other files from this repo. Restart ...

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 ...

Determine --- according to the specifications packed with the tweeter --- what frequency range and type of piezo you have. Most direct-diaphragm automotive or small-speaker piezos have a bottom-end ...

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 ...

The LEDs are arranged in two rows as you would expect, representing hours and minutes. A small piezo speaker serves as the alarm buzzer, which should be sufficient to wake up most people ...

The BLDC part requires SimpleFOC arduino library to do the FOC (3 phase) control and requires specific hardware The Piezo should work with little speakers or Piezo (you may need to add a 100ohm ...

I am considering TI part DRV8662 to drive a 20nF piezo bender/speaker at 25Vp-p and 4kHz ... This part is the LM48560 – it is quite small, costs less than the DRV8662 and has frequency response curves ...