Some resources to help you getting started with STM32 programming.
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Decoder board radio sensitivity is low, only receive strong radio station.
U disk TF card supports MP3 rate 32-320kbps; lossless WAV bit rate 1411kbps the following, pay attention to download the suffix file (LRC file) should be synchronized to download; if DTS WAV format music, this music decoder board is the default Can not play, can only issue rustle, because DTS is multi-channel, to add plug-ins (like computer player class) to play. Ordinary two-channel WAV format music files are supported
This product does not support folder playback, put the audio file on the root directory of TF card or U disk, otherwise it will cause the slow read data and slow response.
This product from other work mode to TF card or U disk playback, because to re-read the disk, so there will be a short time does not respond to the phenomenon, this is a normal phenomenon.
Home conversion, the router can not use the power! Do not use the charger power supply! Can be used in the 7V-12V power supply between the family must be full-wave rectifier, the use of more than 2200UF capacitor filter can be used to decode board. If the amplifier board to take power, please note that power amplifier board if the dual power supply, it can not be connected to the dual power supply circuit in any way the power supply to the decoder board. Will also damage the decoder board! Please power the decoder board separately.
Decoder board power supply Proposed in the CD circuit board in the regulated power supply (not connected to the CD machine machine behind the terminal), decoders can work stable, but also can avoid common ground interference. Please do not connect to the cigarette lighter or battery, easy to change the size of the throttle caused by the voltage changes, and damage to the decoder board.
Press the MODE key on the panel or the remote control, the screen will switch to BLUE and the speaker will beep twice, indicating that the Bluetooth mode switch is successful. Then in the phone settings to find the Bluetooth option, search for Bluetooth devices, search for BT-SPEAKER (this product Bluetooth name), and connect the pair, the individual phone to enter the password (0000) to pair. A successful beep will sound a beep.
Panel Key Instructions:
Remote Control Key Instructions: