BK8000L Bluetooth Module: Changing Receiver Name for Custom Wireless Speaker Project

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#1 16281872 15 Feb 2017 21:43

Anonymous Anonymous

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Post #1
16281872 15 Feb 2017 21:43

Welcome.
I am working on a wireless bluetooth speaker. I need a receiver module, I found cheap BK8000L modules (1.5 $) on aliexpress, but I wonder if it is possible to change the name of the module displayed on the device? By default, the module is visible as "BK8000L", but you can program it.

Have any of you tried to work with this system?
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#2 16282920 16 Feb 2017 12:54

Anonymous Anonymous

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Post #2
16282920 16 Feb 2017 12:54

Refresh.
Maybe some other reasonably cheap module will allow you to change the name?
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#3 16543934 22 Jun 2017 00:44

uboot571 uboot571

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Post #3
16543934 22 Jun 2017 00:44

Hello, have you found the right module and tested it yet?
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#4 16544723 22 Jun 2017 14:32

Anonymous Anonymous

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Post #4
16544723 22 Jun 2017 14:32

Ultimately, I decided on this BK8000L because it was the cheapest.
Works fine, range up to 10m, but I still don't know if there is any way to configure the name.
#5 16545382 22 Jun 2017 20:34

uboot571 uboot571

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Post #5
16545382 22 Jun 2017 20:34

You saw his catalog notes under the link - link . The only thing I noticed was the ability to read his name. Anyway, the PIN can only be read, not changed.
I wanted to use this module to recognize the owner's phone, but one user made me aware that the module after the loss of bluetooth connection is broadcast for other devices. The subject is here: link
Can you describe your listening experience, sound quality? Have you used any RC filter on the audio output?
I also searched similar audio modules and the description of AT commands is repeated. Such cheap modules cannot be fully configured. The only one I've found is a bit more expensive but offering much more from Kamammi

Quote:
ESP-WROOM-32 module from the ESP32 family - Wi-Fi / Bluetooth BLE
#6 16789524 30 Oct 2017 16:06

kuba2k2 kuba2k2

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Post #6
16789524 30 Oct 2017 16:06

Hello,
With a little practice and light SMD soldering skills you can easily change the name, for example I changed to "Bluetooth Audio". Just make a memory dump, look for BK8000L in it, then change it to anything, and upload the software back. This is a standard 25qXX flash, it can be easily connected to Arduino and program there. If you are interested I can send the program to Arduino which will allow you to easily change the name.
#7 17240437 25 May 2018 19:25

gradek83 gradek83

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Post #7
17240437 25 May 2018 19:25

SPI FLASH system can be ripped with a programmer but I do not know what it depends on me to rip I had to desolder the chip, otherwise he did not want to rip. I send two dunks. I wonder why UART TX RX communication does not work on this module.

Attachments:

BK8000L.flash.bin Download (512 KB)

dump BK8000L.bin Download (512 KB)
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#8 19005662 28 Oct 2020 17:21

Anonymous Anonymous

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Post #8
19005662 28 Oct 2020 17:21

Hello after a long break.
I am just writing to confirm that it is possible to change the name of this BT module without much problem.
Here is the programmer: https://pikabu.ru/story/programmator_2425_fleshek_na_arduino_5193861
It should only be remembered that the 25Q40 memory has 4Mbit of memory (in this Russian program, select the third position from the end) and is powered from 3.3V, so you need to use voltage dividers on the data lines because the Arduino gives 5V on the outputs.
#9 19006695 29 Oct 2020 07:36

Anonymous Anonymous

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Post #9
19006695 29 Oct 2020 07:36

One more thing: what did you dump your flash with? Because this Russian programmer has no option anywhere to save the read array.
Second thing; is information about the currently set module volume stored in the memory (and if so, where)?
#10 19007038 29 Oct 2020 11:22

gradek83 gradek83

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Post #10
19007038 29 Oct 2020 11:22

Select all HEX, copy and paste to HxD program and save as bin. I recommend the EZP2010 programmer
#11 19007342 29 Oct 2020 14:33

Anonymous Anonymous

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Post #11
19007342 29 Oct 2020 14:33

Okay, what about the volume?
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Topic summary

The discussion revolves around the BK8000L Bluetooth module, specifically regarding the possibility of changing its default name displayed on connected devices. Users share their experiences with the module, noting its affordability and functionality, with a range of up to 10 meters. Some participants confirm that it is indeed possible to change the module's name by performing a memory dump and modifying the firmware using an Arduino setup. However, there are challenges related to UART communication and the need for specific programming tools. Recommendations for programmers and methods to extract and modify the module's memory are provided, along with inquiries about volume settings stored in memory.
Summary generated by the language model.