Seeed Studio Studio Grove Loudness Sensor - Analog Output, Gain Adjustable
The Seeed Studio Studio Grove Loudness Sensor is an analog sound intensity module designed for Arduino, Raspberry Pi, and other Grove-compatible microcontroller platforms. It provides a 0-1023 analog output proportional to environmental sound pressure levels, featuring an adjustable gain potentiometer and built-in signal conditioning.
Features
- Analog output signal range from 0 to 1023 for direct ADC reading.
- Adjustable sensitivity via on-board screw potentiometer for gain control.
- Wide operating voltage range from 3.5V to 10V DC, compatible with 3.3V and 5V logic systems.
- Integrated two-stage high-pass filter based on LM2904 op-amp for stable signal conditioning.
- Standard Grove 4-pin connector for plug-and-play integration with Seeed Studio Studio ecosystem boards.
Out of stock
The Grove Loudness Sensor utilizes an electret microphone element coupled with a precision operational amplifier circuit to convert acoustic pressure waves into a measurable analog voltage. The core signal path employs an LM2904 op-amp configured in a two-stage, high-pass filter topology, which amplifies the microphone’s high-frequency signal and outputs a positive envelope waveform suitable for microcontroller analog-to-digital conversion.
This design effectively minimizes low-frequency noise and DC offset, providing a clean signal that corresponds directly to sound intensity. The module includes a manual trimmer potentiometer for precise adjustment of the amplifier gain, allowing calibration for different acoustic environments and sensitivity requirements from -48 dB to 66 dB. The built-in filtering ensures reliable performance in the 50 Hz to 2 kHz frequency band, which covers most typical environmental and machine noise signatures.
Additional Information
| Weight | 0.004 kg |
|---|---|
| Dimensions | 2.4 × 2 cm |
