![]() ![]() Figure 2 shows the components and the general wiring diagram. The speakers (not shown in figure 2) are plugged with male jack connectors into the female sound outlet jacks soldered onto the base board. All these components, except the speakers, are mounted on a base soldering board with dimensions 120×85 mm (43×30 perforations). The Music Machine described here has the following five main components: Arduino Nano, MP3 player, stereo amplifier, speakers, and auxiliary power supply. The card reader fully supports the FAT16 and FAT32 file systems. This MP3 player is, for its low price, quite a performer. Pin layout of a stereo mini-SD card MP3 player for Arduino. That makes a total of 2,550 pieces of music!įigure 1. The amount of music controlled is 100 folders each containing up to 255 songs (maximum supported capacity is a 32 GB SD card). Output is to an earphone (SPK_1, SPK_2, see figure 1) or an amplifier (DAC-R, DAC_L). The MP3-TF-16 MP3 player is a versatile, low cost device that can be operated standalone or with an Arduino, with two-channel (stereo) output under software volume control. Here we experiment with a 16 GB micro-SD card and a MP3-TF-16 MP3 player that is equipped with a SD card slot. These are cheap and they offer gigantic amounts of storage. A popular external storage device is the SD card. A solution is as old as computer science: use external storage. Playing music is not directly possible because even a short stereo music track in MP3 format has a size of close to 2 MB, or far too much exceeding the amount of memory available in the Uno or Nano. At the same time it limits what can be achieved with this microprocessor board. Memory constraint is nevertheless a charming aspect because it forces the user to be very efficient and creative with programming. The ATmega328 chip has a minuscule 32 kB of addressable RAM memory available plus 2kB of SDRAM. The Arduino Uno and its little brother Nano are microcontroller boards equipped with a very limited amount of on board memory. A connected PAM 8403 mini amplifier powers two mini speakers. Here we discuss a Music Machine consisting of a simple stereo MP3 player that is controlled by an Arduino Nano. Connecting a SD card based MP3 player to an Arduino overcomes the memory limitation and opens the world of real digital audio. Can be done through simple serial commands specified music player, as well as how to play music and other functions, without the cumbersome underlying operating, easy to use, stable and reliable.(26) Music Machine – An Arduino MP3 player with amplifier and two speakersīecause of working memory space constraints in Arduino microcontroller boards, production of sound with these boards is normally limited to creative application of beeps. While the software supports TF card driver to support FAT16, FAT32 file system. The module itself perfectly integrated hardware decode MP3, WAV, WMA. Module with battery power, speaker, and the keypad can be used alone, or through the serial port control, as the UNO or any microcontroller with a serial port module. ![]() 30 level adjustable volume, six adjustable EQĭFPlayer Mini is a compact and inexpensive MP3 module can be directly connected to the speaker.The audio data is sorted by folder supports up to 100 folders, folders can be assigned to every 255 Tracks.Advertising finished playing background sound continues to play back Radio spots language function, you can pause the background music being played.IO control, serial port, AD button control mode ![]() A variety of control modes are available.Fully supports FAT16, FAT32 file system, maximum support 32G TF card, support U disk to 32G, 64M bytes NOR FLASH.24-bit DAC output, support range: 90dB, SNR support: 85dB. ![]()
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