I have a Raspberry Pi 4, and have installed Amazon Voice Services on it. I am using a ReSpeaker USB Mic Array. It is working so far. The only thing is, the light ring on the ReSpeaker stays on all the time.
I tried looking through the documentation, and saw it looked like I could create a VAD.py to adjust it, but it didn’t seem to do anyting. I’m very new to this, so not sure what I’m doing wrong, but am pretty sure I am…
I was able to turn off the led ring with this repo: https://github.com/respeaker/pixel_ring.git
The document is here: http://wiki.seeedstudio.com/ReSpeaker-USB-Mic-Array/#control-the-leds
But it is strange that the led ring is always on, it should be off when your room is quiet.
LOL my room is never quiet. Looking at it, the light does turn off when the room is quiet (after the kids go to bed lol)
I will try that repo and see what happens.
Is there a way to make it so the LED ring responds with alexa? I see I can edit the UI in alexa which allows me to create trigger sounds for different things. I didn’t know if I could add a command of some kind that would trigger the light ring to turn on and off. If not its no big deal, I will just leave it off. 
I updated the firmware to 6_channels_firmware.bin. When I did this Alexa stopped responding unless I was right on top of the mic. I tried 6_channels_firmware_6.02.bin and it didn’t help. I tried the 12db gain version but it said it didn’t exist.
My question is, what is the factory firmware and how can I set it back to factory settings to try and start over so to speak?
also, does updating the firmware to one of the db gain ones, turn off auto gain?
The factory firmware is 6_channels_firmware.bin indeed, and you need to be careful about which channel is captured by Alexa. And 1_channel_firmware is recommended if those raw audio data is not necessary for your application.
And updating the firmware to one of the dB gain ones won’t turn off Automatic Gain Control.