Changing the chinese voice of TPA3110 Sanwu Bluetooth Amplifier Board SW-HF47

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O

oxl

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Joined 2018
#1
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#2
In principle you can, by getting an eprom programmer, and hacking the bluetooth chip. Saying that this is a profoundly non trivial undertaking doesn't even touch the sides. The best way to fix this problem is to buy another board.
Not very diy, sure, but there comes a point where you have to do a sanity check.
 
#3
No, I was more thinking about ordering some from Sanwu without the horrible audio notifications. Sanwu's website claims:
"Customization is available for order >100 pcs:
1. Customs bluetooth device name
2. Customs audio notifications / Remove audio notification"
Is there a big enough interest for this ?
 
#4
The BT chip has no markings? If it's anything like the other BT chips, it should have some utilities to configure the things you're asking and/or AT commands via TTL serial.

Maybe you can poke around and see which pins outputs like 3.3V?
I looked at some other pics and I see JL marking Not Found
 
#5
Hello everybody,
the bluetooth chip on those amps is marked JL and it's a Zhuhai Jie Li AC4602 (datasheet http://img003.hc360.cn/m8/M05/24/ED/wKhQplXIRpOEYX7NAAAAAFTCggE353.pdf)
I even found an SDK for it ( https://pan.baidu.com/s/1gd4RcOj?fid=793451425422902) that can be used to compile the C++ programs and flash them to the chip.
The chip can be accessed via USB, soldering a cable to the 4 exposed pads on the bottom face of the board (just under the JL chip).
There's another thread talking about this
http://www.diyaudio.com/forums/class-d/301607-tpa3110-bluetooth-boards-ebay-2.html#post5474656
 
#7
Hey Lormat,

thanks for the data sheet,.. at least it gives a little insight in the spec of the chip


did you get anywhere with the SDK?
ATM I can't even get on to that web site,.. I'll keep trying, but it's be useful to know if there's any point
 
#8
Lormat said:
Hello everybody,
the bluetooth chip on those amps is marked JL and it's a Zhuhai Jie Li AC4602 (datasheet )
I even found an SDK for it ( https://pan.baidu.com/s/1gd4RcOj?fid=793451425422902) that can be used to compile the C++ programs and flash them to the chip.
The chip can be accessed via USB, soldering a cable to the 4 exposed pads on the bottom face of the board (just under the JL chip).
There's another thread talking about this
New tpa3110 Bluetooth boards on eBay - Page 2 - diyAudio
Click to expand...
Boa tarde meu amigo, você conseguiu usar o SDK, o qual você deixou o link para download?


:cop: This is an English language forum, please post in English or provide a translation of the post if you can't.

Good afternoon my friend, were you able to use the SDK which you left the download link for?
Click to expand...
 
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