Unfortunatly there is no way of turning of the voice. Its included by default in the sdk and usually manufacturers dont change much and just compile in the default template because it saves money and they wont need to hire programming people. Also the sdk is not really fully documented well. Some boards that dont have usb sound card functionality can still have it implemented in the firmware and board layout (becauss again manufacturers are lazy to desugn their own thing and use premade schematics) but they just dont place a resistor or jumper disconnecting the usb data lines but leaving pads that can be bridged. I had some models like that. Also if you do plan on tinkering with the firmware, they can be programmed using usb in DFU mode. You have to put a specific signal across the usb pins to put it into dfu mode. The Dfu mode is burned into the bootrom of the ic so you wont erase the functionality. The chips also use UBOOT as their bootloader. They use JieLi's sdk to compile and flash the code onto the flash
@LeftyMaker
2 ай бұрын
Very useful info!
@Loujemouse
3 ай бұрын
Great video! I was thinking of upgrading my old speakers so they would work with bluetooth
@aromalm.s8105
Ай бұрын
I've used one of these, the stereo quality is good considering the price. But the low frequency is where I felt the difference in terms of audio quality between wired and wireless
@parsipax6337
3 ай бұрын
get the m18, it has key pinout for controls 😊
@DrFailov
3 ай бұрын
Good video and useful information
@vipulbhardwaj1537
Ай бұрын
I have red one and its connection sound is like black one. But there is one issue, whenever I play audio it transmits a hiss along with audio even when volume is zero. One way to avoid it is a RC filter at output but that reduces the high frequency performance.
@vishnuvardhan6384
6 күн бұрын
is there is any way to amplify the sound to 3.5mm because I'm using the kcx bt002 module that provide the sound with no actual base or anything just a mono audio with lowest sound..
@LeftyMaker
3 күн бұрын
I believe you have it connected wrong. There are three analog audio outputs: left, right, and ground. You connect your left channel to left and ground, and the right channel to right and ground. Right now it sounds like you have one channel connected to the left and right outputs, so they cancel each other out and you only hear the difference between the channels, which explains the lack of bass
@velixo3338
Ай бұрын
Hey, weird question ik, but do work as an engineer?
@LeftyMaker
Ай бұрын
No. That's just a hobby
@shadowhunterxxx5891
3 ай бұрын
There is many bluetooth module with amplifier that used common power supply without any noise but when used tow seprated module with LC filter and short wires still there is ground loop noise
@LeftyMaker
3 ай бұрын
Yes, I have come across good ones, but all I've tested with a JieLi Bluetooth chip have had beeping noises. The better the speakers, the more you can hear them. CSR BT modules are much less noisy and have never had lady voices too
@hippohoppa
Ай бұрын
If I attach a rechargeable battery to it, can it get charged through the micro USB?3
@LeftyMaker
Ай бұрын
No. You may even damage the battery by doing that
@hippohoppa
Ай бұрын
@@LeftyMaker Ohh so you can't solder a lithium battery to it! Thanks for letting me know
@mykflyst
2 ай бұрын
💯
@myshticaanimo2169
3 ай бұрын
Can't find these JL ic data sheet 😭
@LeftyMaker
3 ай бұрын
search JieLi on LCSC.com and one/some of the chips there are probably on these boards
@myshticaanimo2169
3 ай бұрын
@@LeftyMaker I will try Thank you😇 it work I was trying to find this manufacturer from long time
@309electronics5
2 ай бұрын
These ics dont really have any great documentation and it requires some digging. Also the number on the ics dont match with any datasheets and are likely firmware revisions and id number of the mfr. Most are from the JL ac69xxxx family
@myshticaanimo2169
2 ай бұрын
@@309electronics5 thanks❤️😇 But somehow almost every Bluetooth ICs are from them
@VandalIO
2 ай бұрын
You had the Bluetooth transmitter in the floor ! You should have tested the range when the transmitter was atlas 1.5 meters off the floor
@LeftyMaker
2 ай бұрын
is the floor lava or something?
@VandalIO
2 ай бұрын
@@LeftyMaker 🤦♀️
@VandalIO
2 ай бұрын
@@LeftyMaker comment was meant as constructive feedback ! It’s radio transmission 101, transmitters ideally need to be above ground or sea level to reduce *multi-path interference* and reduce *fresnel zone interference* having them higher than ground could have produced more meaningful result in real world scenarios
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