Desktop music module

The multifunctional desktop music module (verified) using Jerry AC6955F as the main controller
has Bluetooth connection to play music,
U disk playback, sd card playback, USB playback function
uses an external antenna, not only has a good signal but is also very cool
. The charging chip uses tp4054 , the charging indicator light was connected wrongly, so
the charging current was about 300mA.
Here are two details!
1. The TF card holder is retracted to prevent it from becoming a guillotine.
2. The DC blocking capacitance of the audio output will reduce the weakening of the bass.
The manual gives 10uF, but I used 20u.
3. After my actual testing, the power supply voltage of the U disk needs to be about 3.3v or more to work properly,
but the lithium battery voltage is about 2.6-4v, so the U disk function cannot be used normally when the voltage is low,
so I use the sx1308 chip. The boost circuit boosts the voltage to 5 volts to ensure the normal operation of the USB flash drive.
It is recommended that after welding the boost circuit, test that the output voltage is within the normal range before connecting the USB flash drive to prevent burning the USB flash drive.
2023.3.15 - Modified sound There are errors
 
and some information is in the attachment. Please download it yourself.
The writing is not good, so I just wrote this much. If you have any questions, you can leave a message in the comment area
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