LEAN TOYS Analog Sensory Manipulative Board Car LED Lights - Gravity Analog Sound Sensor Module with Electret Microphone, LM358 Amplifier, 3.3-5V DC, for Arduino, Raspberry Pi, ESP32

Unlike generic sound detection boards that only provide a digital on/off signal, the LEAN TOYS Analog Sensory Manipulative Board Car LED Lights (model 20653) delivers a true analog voltage output, giving your microcontroller the full waveform of ambient sound. This Gravity-series module from DFRobot pairs an electret condenser microphone with an LM358 operational amplifier, so you can capture everything from soft voice commands to sharp claps with adjustable sensitivity. Whether you are building an interactive art installation, a voice-activated robot, or a security system that reacts to noise, this board offers the precision and flexibility that simple digital sensors lack.

Highlights

• Analog sound sensor with on-board electret condenser microphone (ECM) for broad frequency response (50Hz–20kHz)
• LM358 op-amp amplifier with potentiometer for fine-tuning sensitivity to your environment
• Gravity 3-pin analog interface (A0 output) – plug-and-play with Arduino, Raspberry Pi, ESP32, and any ADC-equipped MCU
• Wide operating voltage range 3.3V–5V DC, low current consumption (<10mA) for battery-powered projects
• On-board power indicator LED and two M3 mounting holes for secure installation
• Compact, robust design suitable for prototyping and permanent installations

In daily use

Connect the module to your microcontroller's analog input and power it from 3.3V or 5V. Adjust the on-board potentiometer to set the trigger threshold for your application: turn it clockwise for higher sensitivity.

Full specifications

• Sensor Type: Analog Sound Sensor
• Microphone Type: Electret Condenser Microphone (ECM)
• Operating Voltage: 3.3V - 5V DC
• Output Signal: Analog Voltage
• Interface Type: Gravity 3-Pin (Analog)
• Amplifier Chip: LM358 Op-Amp
• Sensitivity Adjustment: On-board Potentiometer
• Frequency Response: 50Hz - 20kHz (approx.)
• Compatibility: Arduino, Raspberry Pi, ESP32, Microcontrollers with ADC
• Mounting Holes: 2x M3
• Operating Temperature: -10°C to +50°C
• Power Indicator: On-board LED
• Detection Capability: Ambient Sound, Voice
• Output Pin Designation: A0 (Analog Output)
• Current Consumption: <10mA (typical)
• Module Series: DFRobot Gravity
• Application: Sound detection, voice control, interactive projects, security systems

Final note

For reliable sound sensing with analog precision, the LEAN TOYS 20653 is a solid choice for hobbyists and professionals alike.