WAV zenelejátszó modul Audio lejátszó hangsugárzó modul az Arduino számára
WAV Music Player Module Audio Player Voice Broadcast Module for Arduino
Description
The module is a WAV player module based on 12bit DA converter chip MDP4921. SD card can complete play mono, not more than 22.1K sampling rate and not more than 16-bit way format file with the main control board.
And it is with low SNR, and the noise is little big when it works at a low volume, so we should adjust the volume to a half circle above when we use it. If we use external power amplifier and make it works better.
We can adjust the volume on the amplifier, especially for some places which don't have high requirement for the sound quality like subway, ATM machine, electronic clock and other places with sound prompts.
Features
It can play WAV music and audio;
Power supply 4.75~5.25V;
Interface: 5V or 3.3V;
4 x M2 screws positing holes which is easy for installation
Interface
Control Interface: A total of six pins (GND, VCC, SDI, SCK, CS, LDAC), GND to ground, VCC is the power supply, and the remaining four for the signal input / output pin. 
DA conversion: conversion circuit based MCP4921 12-bit DA. 
Volume control potentiometer: to increase the volume reorientation should dial potentiometer (volume control) to the semi-circle above, in order to hear more clearly. 
Voltage follower: enhance DA converter output signal to drive the load capacity of the headset. 
Speaker Interface: You can pick 8Ω/0.5W small speakers, but the volume is smaller. 
Headphone Jack: Plug in headphones to listen wav audio playback effect. 
Positioning holes: 4 M2 screws positioning hole diameter is 2.2mm, the positioning of the module is easy to install, to achieve inter-module combination.
Photos
Part List ( Schematics and program can be sent via e-mail,Please contact us)
1 x  Wav player module
               
Please Note That (Note: After you buy the product, the documents can be send, Please contact us)
1834524909 - opensmart