Sound sensors, acoustic wave sensors with a microphone and vibration sensors are a group of transducers that detect vibrations in the form of waves of different frequency, converting them into an electrical signal. In Botland store, you will find sensors suitable for the application you are building .. Offer of sound sensors and electroacoustic signalling devices of the Grove module system from Seeed Studio, compatible with Arduino and Raspberry Pi. The sensors enable the construction of any applications that use sound signals for control (e.g. acoustic switches), as well as enriching the projects with the function of emitting a sound signal triggered by a specific event, e.g. low battery level. We also offer LED modules that can work with sensors and sounders. Another type of sensors we offer are vibration detecting sensors, i.e. operating in the frequency band from 1mHz to even 1GHz, so it can be used in a wide range of devices, e.g. in anti-burglary systems, motion detection systems in space, as well as switches.
The sound level meter is compatible with Arduino. For measurements, it uses the circuit instrument and the microphone with a low noise level that allows to accurately measure the sound level in the environment. It measures the sound in the range of 30 DBA to 130 DBA. It is powered with the voltage from 3.3 V to 5 V.
Module from the Grove series, based on the system LM2904 and a microphone. It can be powered with a voltage ranging from 3.5 V to 10 V. The output is the analog signal. The sensor can detect the strength of the environment's sound. It has an analog output that makes it compatible with most of the commissioning modules, including Raspberry Pi and Arduino.
Module from the Grove series, based on the LM386 system and electret microphone. It can be powered with any voltage from 4 V to 12 V. The output is an analog signal. The sensor can detect the sound strength in the environment. It has an analog output what makes it compatible with most commissioning modules, including Raspberry Pi and Arduino.
Tile for the development of ESP-EYE is used to detect and image recognition, and signal processing of speech. ESP-EYE has a built-in chip ESP32, equipped with a camera 2 MPx, digital microphone, flash memory 4 MB memory 8 MB PSRAM. Powered 5 volt via microUSB cable.
Audio detector powered with the voltage ranging from 3.5 to 5.5 V. The module is easy to use, it has three outputs: an analog - to measure the intensity of the signal, digital - is changing the status when exceeding a certain level and the audio output.
Sound module with built-in decoder VS1003B. It has line input and line output for connecting a microphone and headphones. The board has also a simple microphone. The module communicates using the SPI bus, it is powered with the voltage of 3.3 V.
Module with silicon microphone, MEMS type, which does not require amplifier. It detects sound with frequency from 100 Hz to 10 kHz and converts it into an analog output signal that can be read using the A/D converter. The device operates with a voltage from 3.3 V to 5 V.
Vibration sensor with flexible plastic piezoelectric sensor LDT0-028. It is supplied with 5V, works with modules from Arduino, Raspberry Pi and other microcomputers/controllers. Flexible sensor leads to the generation voltage. Range (0.001 Hz to 1000 MHz) can be adjusted using the built-in potentiometer. The kit also includes a cable Grove.
Audio detector powered with the voltage ranging from 3.3 V to 5 V. The module is easy to use, it has two outputs: analog - to measure the intensity of the signal and digital - changing the status when exceeding a certain level.
Tile development minikomputera BBC micro:bit, thanks to which kids will learn the major issues in the realm of nature. Has built-in different kinds of sensorsthat were marked with drawings on the tiles in the form of a tree. The module simulates a scenery consisting of a cottage between the tree and the top.
Overlay for Raspberry Pi is equipped with a sensor of temperature, pressure and humidity BME280, light sensor and proximity LTR-559, analog gas sensor MICS6814, Converter ADC ADS1015, a MEMS microphone and a color LCD display. The Board also has a connector for the sensor PMS5003.
Microphones are sensors operating on the principle of proportional conversion of the energy of the mechanical vibrations of the magnetic diaphragm into electricity, in the form of a voltage causing the current flow in the coil winding. The most common microphone designs used on stage and in recording studios are dynamic, ribbon and condenser microphones. In addition to popular microphones, sound sensors based on piezoelectric and electrostatic phenomena are also used, which enable sound detection in various industrial, medical and robotics applications, as well as in identifying and tracking objects, e.g. by echolocation. The design of such sensors allows the detection of sound waves, the frequencies of which fall outside the spectrum of the human audibility band. For example, ultrasonic sensors are used in the process of welding plastics, and infrasound sensors are used in the process of inspecting the structure of materials with a lower density than most metals, such as wood, concrete or cement. Measurements made with such sensors are not affected by environmental illumination, as can be the case with measurements with light intensity and colour recognition sensors.
The buzzer is a small loudspeaker that produces a clear sound signal by applying a voltage to its terminals. Most often, the design and operation of a buzzer are based on the vibration of piezoelectric material between two electrodes. For the buzzer to generate sound, its electrodes should be fed with a voltage that changes in time, e.g. in the form of a PWM signal from the microcontroller output. Buzzers are used in all applications that require sources of a simple acoustic signal, such as microwave ovens with sound signalling of the end of heating a meal, alarm and warning devices, as well as electronic toys. Buzzers are also found in PC desktops and make themselves felt, among others when the user warns about enabling the Sticky Keys function. Thanks to their small dimensions and low energy consumption, they are also used in playing gift cards.
The sound level sensors are designed to measure ambient sound pressure levels. The built-in electret microphone and operational amplifier adequately filtering the input signal from interference (the bandwidth depends individually on the model) and the potentiometer for adjusting the gain of the output signal from the sensor (applies to the model based on the LM2904 chip), enable precise calibration and use of these sensors in sensory applications for sound detection and measuring its parameters. The sensors are compatible with Arduino - their output receives an analogue signal in the form of voltage. The sensor output should be connected to the input of the analogue-to-digital converter in Arduino, while in purely hardware applications, the purpose of which is to detect sound with a threshold amplitude, the sensor should be connected to one of the comparator inputs or an operational amplifier operating in the window discriminator mode.