From Stack of Boards to Boombox (with Up2Stream Amp 2.1)

DIY Products&Projects DIY Product Projects
21

Just a quick update since there was no reply.

I tested the ADC_Key without the 0.1µF cap in the diagram on a breadboard and it worked for me on U2S AMP2.1. I then added it to my DIY button board and it works there, too. That is for the buttons I am using: Mode, Volume -, Volume +, Mute

22

Hello,
Great build!
Did you have any problems getting the audio source LEDs (WiFi, BT…) to work correctly? I am finding the WiFi LED and USB LED are not stable. WiFi LED will correctly turn on but eventually the USB LED will also turn on withing a few minutes. I am not using the USB port. Did you run into this issue?

Thanks,
Matty

23

Hi Matty,
No problems with status LEDs in my build. At any time, only one of the LEDs is turned on. Most of the time, I’m using either the BT or the WiFi mode. Occasionally, the boom box loses the connection and the status has to be reset again. No issues apart from that.
Regards, Sven

24

Thank you Sven,

WIN_20241003_07_25_57_Pro
WIN_20241003_07_25_57_Pro1455×783 131 KB

I just tried a reset. Same problem. Will keep playing with it. Odd used the 1k resistors and pulled power from PH2.0-9P. LED cathodes connected to pins 3-6.
Anyway, attached is a pic of my build so far. The speakers are transmission line. Sealed cabinet subwoofer.

Thanks again,
Matty

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