Active Buzzer is an integrated structure electronic transducers, DC voltage supply, widely used in computers, printers, copiers,
alarms, electronic toys, automotive electronic equipment, telephones, timers and other electronic products for sound device.
This bluetooth audio receiver comes bundled with amplifier, making it ready to receive your audio streams wirelessly on any speaker.
3.7V Micro USB Car Bluetooth Phone Call Hands Free Audio Receiver Board Wireless Stereo Sound Module
Electronic brick of microphone can be connected to the analog I / O port, when speaking to the microphone, the analog value will be changed. A recorder can be made by reading and saving the analog value.
This is a simple yet enjoyable twig to use. The piezo can be connected to digital outputs, and will emit a tone when the output is high. Alternatively it can be connected to an analog pulse-width modulation output to generate various tones and effects.
Grove - Recorder is based on ISD1820P, which can record 8~20 sec by set resistor and cycle play. It can offers true single-chip voice recording, no-volatile storage. Grove - Recorder is 100K and the total 10s for Recorder. This module is very easy to control, which can direct control by push button on board or by microcontroller.
Grove-Serial MP3 Player is a kind of simple MP3 player device whose design is based on a high-quality MP3 audio chip---WT5001. It can support 8KHZ~44.1KHZ sampling frequency MP3 and WAV file formats. This product has several peripheral ports: a standard UART Grove interface, a dual track headphone jack, an external interface and also a Mini SD card...
The Grove - Speaker is a module consist of power amplification and voice outputs. The loudness can be adjusted by the on-board potentiometer. With different input frequency, the loud-speaker generated different tones. Coding the music into arduino, DIY your own music box!