Arduino Modulino® Buzzer

Arduino Modulino^® Buzzer is a versatile audio output module, powered by an on-board STM32C011F4 microcontroller (MCU), that helps users add simple tones and sound effects to projects. The module features a PKLCS1212E4001 piezoelectric buzzer capable of producing a wide range of tones and sound effects, making it ideal for alerts, notifications, and interactive audio feedback in embedded projects. The module includes an onboard microcontroller that handles sound generation, allowing users to trigger tones using simple I²C commands without burdening the main board’s processing power. With a compact form factor, solderless connectivity, and compatibility with other Modulino components, the Modulino Buzzer is a user-friendly solution for adding sound to educational, prototyping, and hobbyist applications.

Features

PKLCS1212E4001 buzzer controlled by an STM32C011F4 microcontroller over I²C (Qwiic)
Operates at 3.3V (in line with Qwiic standards, 2.0V to 3.6V MCU range)
SWD header for optional reprogramming or custom sound logic
I²C Qwiic cable included
Plug-and-play connectivity

Robust, ready-to-use design
Effortless expansion
Seamless Arduino ecosystem integration
Ideal for alarm tones, status beeps, or simple audio feedback
CE/RED (Europe), UKCA (UK), FCC (USA), IC (Canada), RoHS, REACH, and WEEE certified

Applications

Audible alerts
Alarm and security systems
Interactive learning tools

Specifications

PKLCS1212E4001 buzzer
STM32C011F4 MCU, 2.0V to 3.6V supply range
3.3V nominal operating voltage via Qwiic
~6.4mA typical current consumption when buzzer is active
I²C (Qwiic) and SWD communication, optional UART if reprogrammed

Board dimensions
- 41mm x 25.36mm size
- 1.6mm (±0.2mm) thickness
- 4x ø3.2mm mounting holes
- 16mm vertical, 32mm horizontal hole spacing
-40°C to +85°C operating temperature range