The range of detectors and sounders elektroakustycznych system of Grove modules from Seeed Studio, Arduino-compatible and a Raspberry Pi. Sensors allow you to build any applications that use audio signals to control (for example, switches acoustic), as well as the enrichment projects in the function of emission of a sound signal is triggered as a result of a specific event, for example, low battery level. In the proposal we have also modules of LEDs, which can operate with sensors and sound signalling devices.
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.
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 with passive buzzerem , allowing the low sound frequency adjustment the PWM. The buzzer can be used as alarm siren, and the maximum sound volume is 80 dB. The module is supplied with the voltage from 3 Volts to 5 Volts. On the Board is Grove connector for easy connection of the module with base plate.
Identity module voice based on Nuvoton ISD9160 with built-in microphone. There are some Grove connectors for easy connection pad of the Base Shield. Communicates via SPI interface. The module is supplied with the voltage from 3 V to 5 V.
Module sound recording on the basis of the layout ISD9160FI equipped with 2 MB of flash memory , making possible the preservation of the record length of 83 seconds. The Registrar can be used with a control module, such as the Arduino as a standalone device. Works with a voltage of 3.3 V.
Microphones are sensors working on the principle of proportional energy conversion of mechanical vibrations of the membrane magnetic into electrical energy as the voltage that causes current flow in the winding of the coil. The most common MICS used on estradach and in recording studios microphones are dynamic, ribbon and condenser. For popular microphones also apply to sensors operating based on piezoelectric and electrostatic phenomena that enable the detection of sound in various applications, industrial, medical, robotics, as well as in identifying and tracing objects, for example, by echolokacji. The design of these sensors allows the detection of sound waves whose frequencies are outside the spectrum range of hearing for humans. For example, ultrasonic sensors are used in the welding process of plastics, as an example: ultrasonic sensors are used in the audit process structure of materials with a low density of most metals, e.g., wood, concrete, or cement. On the measurements taken by such sensors does not affect the exposure of the environment, as this may take place when measuring the ambient light sensors and recognition of colors.
Buzzer is a small speaker that is influenced by the voltage on its findings, produces a clear signal. Most often, the design and operation of a buzzer, based on the shaking of piezoelectric material between two electrodes. To buzzer made a sound, its electrodes must submit an AC voltage, at the time, for example, in the form of a PWM signal output from the microcontroller. Buzzery find use in all applications that require a simple acoustic signal, such as, for example, a microwave oven with a buzzer to the heating of food, the device alarm and warning, and electronic toys. Buzzery they are used in the desktop computers of the PC class and make themselves known, in particular, in the course of warning the user about the enabling key assets. Due to its small size and low power consumption, also find application in gift playing cards.
Sensors of volume level is intended for the measurement of sound pressure level of the environment. Built-in electret microphone and the amplifier, the operating system, respectively, the filtering of the input signal from noise (bandwidth throttle depends individually from the model) and the potentiometer gain control of the output signal of the sensor (for the model on the basis of the layout of the LM2904), provide accurate calibration and use of these sensors in sensor applications for the detection of sound and measurement of its parameters. Sensors Arduino-compatible - their output is an analog signal voltage. The sensor output should be connected to the input of the Converter the analog to digital Arduino, and applications all pure hardware whose purpose is the detection of sound amplitude threshold, the sensor should be connected to one of the inputs of the comparator or amplifier is operating system, operating mode dyksryminatora window.