GMOD-BUZ-PIEZO, Piezo Buzzer

General-purpose piezo buzzer for audible alerts and tone generation in 3.3V and 5V microcontroller systems. Available in Active (fixed tone, digital ON/OFF) and Passive (variable pitch, PWM-controlled) variants. Compatible with direct GPIO drive on ESP32 and GLYPH-C6 platforms. Passive variant requires the ESP32 LEDC peripheral for PWM tone generation, Arduino tone() is not supported on ESP32.