Bluetooth audio receiver chip or module - suggestions please

Go To Last Post
14 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi I am looking for suggestions for a single-chip bluetooth audio receiver - chip or module.

In the past I have used these modules from Sierra (aka Bluecreation) the BC127 they are good quality and have I2S output - but they are expensive at £16 each.

 

There are loads of items on Aliexpress such as these and these - they are low cost, but very difficult to figure out what IC is on there or to get data for them.

 

So my requirements are:

1. An embeddable Bluetooth audio receiver: 'stamp' module, or IC

2. I2S output 

3. U.FL Antenna - not built in patch antenna.

4. Low cost. 

5. Available and documented.

6. UART control interface

 

So have you ever used anything like this, and/or have any recommendations?

 

*edit* Added UART Control interface requirement.

SpiderKenny
@spiderelectron
www.spider-e.com

 

Last Edited: Tue. Mar 24, 2020 - 12:01 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

SpiderKenny wrote:
UART Control interface requirement

Does it have to be UART, or could you do SPI or I2C ... ?

 

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

awneil wrote:

Does it have to be UART, or could you do SPI or I2C ... ?

 

Thanks for the reply.

Yes, I could do SPI or I2C.

SpiderKenny
@spiderelectron
www.spider-e.com

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

 

Thanks for the reply. Unless I'm mistaken - none of the chips on that page have I2S audio output :-(

SpiderKenny
@spiderelectron
www.spider-e.com

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

awneil wrote:

This one claims to:  https://www.microchip.com/wwwproducts/en/IS2064

 

Thanks again - however the IS2064 - no stock at any of the usual distributors, and not available on Microchip Direct. :-(

 

SpiderKenny
@spiderelectron
www.spider-e.com

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Something like a BTM303 module:  Bluetooth I2S on Ali Express for about $4?

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Simonetta wrote:
on Ali Express for about $4

But, as stated in the OP, the trouble with Ali Express is that you have no real idea what you're getting; no documentation; no support.

 

That is why they're cheap!

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

ESP32 has all the building blocks, but I can't say whether the necessary software parts are joined-up. There are certainly hobbyist-level projects that can be googled, e.g. https://hackaday.io/project/1661...

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Thanks everyone - it's interesting how difficult this is to find a suitable part. You'd think it would be easier.

It has to be a reliable source - its for a product being designed for a large UK manufacturer, and so has to come via a respected distributor.

I think the Microchip one is probably the best bet - but I think I need to speak to them direct to build a relationship before they will sell the part. They will want forecasts of unit sales.

 

 

SpiderKenny
@spiderelectron
www.spider-e.com

 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

SpiderKenny wrote:
They will want forecasts of unit sales.
Reminds me of a question asked when I forecast sales of a certain product; "where are they getting the money?"

Ross McKenzie ValuSoft Melbourne Australia

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

SpiderKenny wrote:
 its for a product being designed for a large UK manufacturer, ...
Dialog is HQ'd in Reading; Dialog made an attempt at acquiring Atmel.

Wireless Audio ICs | Dialog Semiconductor

edit :

Wearables | Dialog Semiconductor

 

"Dare to be naïve." - Buckminster Fuller

Last Edited: Wed. Mar 25, 2020 - 02:36 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1

gchapman wrote:

Dialog is HQ'd in Reading; Dialog made an attempt at acquiring Atmel.

Wireless Audio ICs | Dialog Semiconductor

edit :

Wearables | Dialog Semiconductor

 

Yeah the DA14195 - only available if you comit to buy 3000+ - which might not be a problem, but I bet the price is $$

I have some good contacts in China. They suggest I use the BK3266 and are trying to source me a DevKit and SDK - unit price is less than $1

 

SpiderKenny
@spiderelectron
www.spider-e.com