SmartElex Micro:Bit Gator Microphone Accessory Board
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SmartElex Micro:Bit Gator Microphone Accessory Board SmartElex Micro:Bit Gator Microphone Accessory Board is a compact audio input module designed for sound-based projects using the BBC micro:bit. It enables students, hobbyists, and educators to capture and measure sound levels, making it easier to explore audio interaction, environmental monitoring, and voice-triggered responses. This board helps simplify sound detection tasks without complex circuitry, making it ideal for classroom STEM learning, beginner prototyping, and creative electronics projects where ease of use matters. This gator microphone micro:bit accessory integrates seamlessly with the micro:bit ecosystem through alligator clip connections, allowing quick setup for sound-reactive experiments, robotics projects, and IoT prototypes. It provides a reliable interface for building projects such as noise meters, sound-activated indicators, interactive art, or classroom activity monitors. Whether used in a school environment or by independent makers, it offers a straightforward way to introduce audio sensing to microcontroller projects while encouraging hands-on learning and innovation. Features: Fully compatible with gator:bit and micro:bit audio projects Built-in ADS1015 ADC for accurate sound level measurement Supports multiple modes: Single-Shot, Continuous Conversion, and Duty Cycling Single-ended analog input configuration with adjustable full-scale range 12-bit differential / 11-bit single-ended resolution for precise signal capture Sample rate options from 128 Hz to 3.3 kHz for varied recording needs Low-power operation with typical draw between 150μA–200μA Communicates via I2C with default address 0x48 Integrated electret microphone with omnidirectional pickup pattern Frequency response range of 20 Hz to 16,000 Hz for everyday sound detection Includes LMV324 Op-Amp for stable and amplified audio signal processing Wide operating voltage support from 2.0V to 5.5V, suitable for microcontrollers Designed for STEM classrooms, prototyping, IoT sensing, and audio experiments
- Microphone accessory board designed for BBC micro:bit
- Detects ambient sound and measures noise levels
- Omnidirectional pickup for general audio sensing
- Simple alligator-clip connection for quick setup
- Ideal for STEM learning and sound-reactive projects
- Great for classrooms, prototypes, and maker experiments
- Frequency Response 20 to 16,000 Hz
- Directivity Omnidirectional
- Supply Current (mA) 0.3
- Operating Voltage (V) 1.5
- Operating Temperature (°C) 40 – 125
- Sample Rate (Hz) 128 Hz – 3.3 kHz