Tuesday, June 18, 2024

USB MP3 Player

If you go to the market to buy an USB MP3 player, it will cost around 500 rupees or more. But you can assemble one for yourself for 150 rupees or less. All the components, including the module, are readily available as a kit form with many electronics spares shops.

In this article you will find instructions to assemble and use the USB MP3 module supplied by Shenzhen Vire Silicon & Technology Co. Ltd, China. The module comes with a remote control also for users’ convenience.

Fig. 1: Removing the front cover
Fig. 1: Removing the front cover
Fig. 2: The USB module with its various connection points
Fig. 2: The USB module with its various connection points

This versatile module features USB player, SD card player, FM player and an auxiliary input. Besides the USB MP3 module you get two 3.5mm female jack sockets, USB female cable or port, IR receiver and 5V regulated DC supply in the kit for this DIY project.

Just connect the components as mentioned in the text below.

Here we shall be discussing all the features which has been tried and tested successfully except the SD card holder connections, as this feature is rarely used. Connect the below-mentioned points to the USB female connector:

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GND – Ground
DP – Data Plus (+)
DM – Data minus (-)
5V – 5V supply

Connect audio out and IR receiver portion as indicated below:
L – Left channel audio out
AG – Analogue ground
R – Right channel audio out
G – Ground for IR receiver
IR – IR out of the IR receiver
3.3V – 3.3V supply for IR receiver

Fig. 3: The author’s prototype
Fig. 3: The author’s prototype of the USB Mp3 Player

Almost all the IR receivers have their IR, GND and Vcc pin-outs facing the receiver from front. The manual switch connections are optional; these can be connected using tactile switches to ground:
V+ – Volume Plus
Mode – Mode( USB/Aux/FM)
V – Volume Minus
P – Play/Pause
Connect a regulated +5V to the point 5V and GND. Connect the aux in connection as shown:
L – Left channel audio in
G – Analogue ground in
R – Right channel audio in
An antenna can be connected to the point shown for the FM reception.
Just make the connections, as indicated above, and connect the output to any PC multimedia speaker and enjoy the music.

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The author is a B.Tech in electronics and communication engineering. Currently, he is an R&D manager at BB Power Tech, India. He likes exploring new circuits


  1. What you need that is PlayList which is programmed one’s requirement. Further you can store audio files (mp3) in alphabetical order like A1, A2, A3,… B1, B2, B3 etc. All the songs will be played sequence-ally one-after another..

  2. This type of module fails after short time of usage. I purchased 3 such kits for my home use but all those started having problems mainly Failing to detect usb drives while the FM and Aux in functions remained Ok. I found that the Panel type modules have better longivity and all the connections to the board comes completed. Also the display is bigger with Time elapsed function. One has to only connec Power and Audio wires.

  3. I have purchased more than 30 such kits and made full working with USB and bt. now recently i got 15 nos out of which 5 got problem with this there is no voltage at IR(3.3 normally) display does not work i have cheked voltage at USB which is correct 5v means up to 5 volt system is workin but than after display and IR is not working. Can anyone help me for repair

  4. i have a old module having square SOC A166101.1 1250TRZ, w/o bt everything works fine, but now sometimes when i insert sony walkman usb mp3 player it shows usb-PC on the led display, what does mean,can i use this module as a usb sound card, i even connected a straight usb cable to module & pc didn’t see that message on the module.

    • Comparatively this board is old but the new VIRE board available in the market can be operated without IR remote. However, the use of IR remote is much more convenient and can access the full functionality of the board.


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