Touch Sensor with Piezo Buzzer - Arduino Tutorial

A TTP224 4-Channel Capacitive Touch Sensor controlled Buzzer using an Arduino UNO MCU is a system that uses the Tolako TTP224 4 Channel

7 Cool Touch Sensor Projects You Can Build With Arduino Uno

arduino uno - Multiple tones with one piezo buzzer - Arduino Stack Exchange

How to setup a buzzer on arduino nano

Arduino Distance Detector With a Buzzer and LED's : 7 Steps - Instructables

Overview, Using Piezo Buzzers with CircuitPython & Arduino

SIK Experiment Guide for Arduino - V3.3 - SparkFun Learn

Piezo Vibration Sensor Hookup Guide - SparkFun Learn

Smoke And Gas Detection Using Mq-2 Sensor And Piezo Buzzer

Passive Buzzer Module — SunFounder Ultimate Sensor Kit documentation