About this item

The ELECROW Crowtail‑Buzzer (model CT0003BU) is a simple, low‑cost audio output module designed to generate sound in electronics projects. Using a piezoelectric buzzer, it converts electrical pulses into audible tones. This module is ideal for alarms, notifications, user feedback, and simple melodies. It integrates seamlessly into the Crowtail system, with a standard 3‑pin Crowtail connector (Signal, VCC, GND), so wiring is minimal and tidy. You can drive it from any digital output pin of a Crowtail Base Shield, Microcontroller, or Arduino; applying a logic HIGH (or PWM) turns the buzzer on. By using PWM (pulse‑width modulation) you can generate different frequencies and thus different tones, enabling melody generation or timed beeps. The module runs off 5V supply, which is common in many Crowtail and Arduino‑style boards. The resonant frequency means it tends to sound loudest around its natural frequency. Physically compact, the module is about 20 mm × 20 mm in footprint and under 10 mm in height. It has a fairly loud output (≥85 dB), so it works well for alert tones and audible signals even in noisy environments