Audio module for playing MP3 files from MicroSD (TF) (up to 16GB) or USB flash drive (up to 32GB).
The board has a mono 2W power amplifier for a 4Ohm speaker (when powered from 5V, the power can reach 3W). For ease of installation, the amplifier output is fed to the terminal blocks. There is also a 3.5 jack stereo jack for connecting headphones.
Playback control is performed using these buttons.
The device can be powered in two ways: either by connecting the power supply through the microUSB socket, or through the nicknames on the BAT+and BAT- board. Supply voltage 5.5-3.7V. You can use a Li-ion or Li-pol battery to power the device.
Main characteristics:
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Audio amplifier mono up to 2W for 4Ohm speaker (when powered from 5V, power up to 3W).
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Stereo 3.5mm jack output for connecting headphones.
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MicroUSB socket for powering the device from charging for mobile devices.
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Ability to connect a li-ion battery as a power source.
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Support for reading MicroSD (TF) memory cards and USB flash drives.
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Supply voltage: 3.7 ~ 5.5V
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Dimensions: 50 * 36 * 12 mm
Button operation instructions:
Button "Prev/V--": "Short press" to switch to the previous song, "Long press" to decrease the volume.
Button "Next/V++": "Short press" to switch to the next song, "Long press" to increase the volume.
Button "P/P/Mode": "Short press" to switch "Play/Pause", "Long press" to switch between microSD and USB.
Button "Repeat": "Short press" to to switch between one song/all songs repeat modes. ("all songs" repeat mode is set by default)
Note: "Long press" is pressing and holding the button for about 2 seconds.
Features and notes:
It is not allowed to connect the battery and power supply via microUSB at the same time; since the contacts are paralleled, the battery charge current can exceed the norm, which can lead to its failure or even fire. To solve this problem, you can use the charge controller module for li-ion batteries presented on our website.
Playback starts automatically when power is applied to the device. The playback indicator is a blinking red LED.
When turned on, read from the microSD card is initialized first. If there is no card, it automatically searches for a USB flash drive. If both devices are installed, you can manually switch between them. (See the section "Button operation instructions")
If you are using a USB flash drive, it is desirable that the power supply is 5V, since some flash drives do not work with a reduced power supply.
The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
