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October 29, 2013
about a year ago
Any chance this could also be offered with the BC127-APTX?
It includes a license for the APTX codec, but I’m not going to pretend that I understand the logistics of that. It would be awesome to have though.
Thanks for clarifying! Definitely not complaining. I was also just worried that it might have been getting phased out since I plan to keep buying more of these. I built one into my car and plan to do it to more cars as needed.
Price drop and low stock? Does that mean a new respin is coming (that hopefully switches the left and right channels on the audio input and output jacks)?
I don’t think it was adding any noise. However, it was hard to tell because the only way I was listening to it was on the other end of a phone call, so the audio quality is bound to be terrible because it has gone through a phone call. I would probably just run the audio into both the left and right input channels on the BC127 just to make sure that it gets through. But if the BC127 is ever listening to only one of the two channels, I think it’s always the left channel.
about a year ago
When I had the BC127 directly connected to my computer and was playing music from my phone to the BC127, I could see the AVRCP song info automatically being printed from the BC127 to the computer. If you haven’t already, try to get that working and see the printouts to confirm that the BC127 is doing its job with that. You might not be reading the printouts properly with the Arduino.
For phone calls, it only uses the audio signal coming into the left mic channel (which would normally be the tip of a 3.5mm connector, but it’s switched with the right channel on the connector on the board). When I was testing it, I used a mono to stereo adapter to plug a mic into the board so that the mic signal would be connected to both the left and right channels. It didn’t seem to add any significant noise, but my mic signal was very weak/quiet so it was hard to tell. Not sure how you’re planning on using the line in, but I hope this helps a little!
about 2 years ago
When using a microphone with the BC127, it is very quiet and not sensitive enough. I have to have the mic ON my mouth for it to work. The bias circuit that I built worked great for the RN-52, but the same exact circuit yields very low mic sensitivity with the BC 127. What can be done to fix this?
about 2 years ago
Looks like no audio was getting through because plugging a mono mic into the connector on the board doesn’t connect to the left microphone input. The mic needs to be plugged into at least the left channel input.
However, the microphone is very quiet and not sensitive enough. I have to have the mic ON my mouth for it to work. The bias circuit that I built worked great for the RN-52, but the same exact circuit yields very low mic sensitivity with the BC 127. What can be done to fix this?
When I’m making phone calls, the other person can’t hear a single thing I’m saying. No audio is making it from my microphone to the other end of the call. The microphone does work, however, for all other voice inputs to the phone such as voice commands. Is anybody else having this issue? I emailed BC to ask them about it.
Thanks again. Last question, I promise: Is this level shifting circuitry on the Purpletooth Jamboree board as well?
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