LEDs ReSpeaker Mic Array v2.0

[tobuh]

Hi

I have problems when running the LED examples for my ReSpeaker device. My setup:

• Pi Zero 2 W with ReSpeaker Mic Array v2.0: https://wiki.seeedstudio.com/ReSpeaker_Mic_Array_v2.0/
• Running LVA bare metal
• Running examples/ReSpeaker Mic Array v2.0 (USB)

My LVA runs fine and smooth, until I start the LED example. When I start the python script, the LED show up full white, and LVA does not react any more on voice. I noticed, the sound device is not present any more, I needed to reconnect the USB to the ReSpeaker.

I also run the pixel_ring example project (https://github.com/respeaker/pixel_ring) in parallel to LVA, without any interference to LVA while the LEDs blink. So I do not think this is a power problem.

Before:

$ sudo arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: ArrayUAC10 [ReSpeaker 4 Mic Array (UAC1.0)], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

After start of the script:

$ sudo arecord -l
**** List of CAPTURE Hardware Devices ****

Here is what happened during connect of LEDs in LVA service:

Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:= connection is CONNECTING
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< GET / HTTP/1.1
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< Host: localhost:6055
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< Upgrade: websocket
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< Connection: Upgrade
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< Sec-WebSocket-Key: VXpx54wYWK33D8n4FVWK/A==
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< Sec-WebSocket-Version: 13
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< User-Agent: Python/3.13 websockets/16.0
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> HTTP/1.1 101 Switching Protocols
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> Upgrade: websocket
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> Connection: Upgrade
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> Sec-WebSocket-Accept: KsR/5n81Ga4gTa4GeCp2+1oVD1g=
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=12; client_max_window_bits=12
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> Date: Fri, 17 Jul 2026 15:12:22 GMT
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> Server: Python/3.13 websockets/12.0
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: INFO:websockets.server:connection open
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:= connection is OPEN
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: INFO:linux_voice_assistant.peripheral_api:Peripheral client connected: ('127.0.0.1', 58106)
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> TEXT '{"event": "snapshot", "data": {"muted": false, ...t 26,4 Grad Celsius."}}' [210 bytes]
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> TEXT '{"event": "idle"}' [17 bytes]
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< TEXT '{"command": "register_light", "data": {"name": ...rts_brightness": true}}' [197 bytes]
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: DEBUG:linux_voice_assistant.peripheral_api:Peripheral command received: register_light
Jul 17 16:12:22 voice-1 docker-entrypoint.sh[934]: INFO:linux_voice_assistant.peripheral_api:Light registered: led_ring (effects=['Voice Assistant'])
Jul 17 16:12:42 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:% sending keepalive ping
Jul 17 16:12:42 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> PING 14 57 23 cd [binary, 4 bytes]
Jul 17 16:12:42 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< PONG 14 57 23 cd [binary, 4 bytes]
Jul 17 16:12:42 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:% received keepalive pong
Jul 17 16:12:42 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:< PING fb 73 8c c0 [binary, 4 bytes]
Jul 17 16:12:42 voice-1 docker-entrypoint.sh[934]: DEBUG:websockets.server:> PONG fb 73 8c c0 [binary, 4 bytes]

Here is the startup of the LED script:

2026-07-17 16:12:22,319  DEBUG     asyncio  Using selector: EpollSelector
2026-07-17 16:12:22,398  INFO      respeaker-usb  ReSpeaker Mic Array v2.0 found (USB 2886:0018, bus 1, addr 3)
2026-07-17 16:12:22,400  DEBUG     respeaker-usb  LED animation → twinkle
2026-07-17 16:12:22,401  INFO      respeaker-usb  ReSpeaker Mic Array v2.0 controller started – connecting to ws://localhost:6055
2026-07-17 16:12:22,401  INFO      respeaker-usb  Connecting to LVA at ws://localhost:6055 …
2026-07-17 16:12:22,906  DEBUG     websockets.client  = connection is CONNECTING
2026-07-17 16:12:22,909  DEBUG     websockets.client  > GET / HTTP/1.1
2026-07-17 16:12:22,909  DEBUG     websockets.client  > Host: localhost:6055
2026-07-17 16:12:22,910  DEBUG     websockets.client  > Upgrade: websocket
2026-07-17 16:12:22,910  DEBUG     websockets.client  > Connection: Upgrade
2026-07-17 16:12:22,911  DEBUG     websockets.client  > Sec-WebSocket-Key: VXpx54wYWK33D8n4FVWK/A==
2026-07-17 16:12:22,911  DEBUG     websockets.client  > Sec-WebSocket-Version: 13
2026-07-17 16:12:22,912  DEBUG     websockets.client  > Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
2026-07-17 16:12:22,912  DEBUG     websockets.client  > User-Agent: Python/3.13 websockets/16.0
2026-07-17 16:12:22,970  DEBUG     websockets.client  < HTTP/1.1 101 Switching Protocols
2026-07-17 16:12:22,970  DEBUG     websockets.client  < Upgrade: websocket
2026-07-17 16:12:22,971  DEBUG     websockets.client  < Connection: Upgrade
2026-07-17 16:12:22,971  DEBUG     websockets.client  < Sec-WebSocket-Accept: KsR/5n81Ga4gTa4GeCp2+1oVD1g=
2026-07-17 16:12:22,972  DEBUG     websockets.client  < Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=12; client_max_window_bits=12
2026-07-17 16:12:22,972  DEBUG     websockets.client  < Date: Fri, 17 Jul 2026 15:12:22 GMT
2026-07-17 16:12:22,973  DEBUG     websockets.client  < Server: Python/3.13 websockets/12.0
2026-07-17 16:12:22,975  DEBUG     websockets.client  = connection is OPEN
2026-07-17 16:12:22,976  INFO      respeaker-usb  Connected to LVA peripheral API
2026-07-17 16:12:22,977  DEBUG     websockets.client  > TEXT '{"command": "register_light", "data": {"name": ...rts_brightness": true}}' [197 bytes]
2026-07-17 16:12:22,980  DEBUG     websockets.client  < TEXT '{"event": "snapshot", "data": {"muted": false, ...t 26,4 Grad Celsius."}}' [210 bytes]
2026-07-17 16:12:22,982  DEBUG     respeaker-usb  Event: snapshot  data={'muted': False, 'volume': 0.7, 'ha_connected': True, 'last_stt_text': 'Wie viel Grad sind es im Wohlzimmer?', 'last_tts_text': 'Im Wohnzimmer sind es derzeit 26,4 Grad Celsius.'}
2026-07-17 16:12:22,984  DEBUG     websockets.client  < TEXT '{"event": "idle"}' [17 bytes]
2026-07-17 16:12:22,985  DEBUG     respeaker-usb  Event: idle  data={}
2026-07-17 16:12:22,986  DEBUG     respeaker-usb  LED animation → idle

Do you have any idea what could go wrong here?

My first impression: Some part of the communication to the LEDs crashes the whole ReSpeaker device.

[omaramin-2000]

Hi, as I don't have experience with that board, I asked Claude about this issue, and based on what it mentions, it's a mismatched constant in the LED driver. So try changing the _CTRL_INDEX = 0x1C back to _CTRL_INDEX = 0x8001 and if that fixes your issue, then open a PR to update it.

[tobuh]

This change causes Errno 32 Pipe error

2026-07-19 19:07:29,324  DEBUG     asyncio  Using selector: EpollSelector
2026-07-19 19:07:29,430  INFO      respeaker-usb  ReSpeaker Mic Array v2.0 found (USB 2886:0018, bus 1, addr 2)
2026-07-19 19:07:29,433  DEBUG     respeaker-usb  LED animation → twinkle
2026-07-19 19:07:29,434  INFO      respeaker-usb  ReSpeaker Mic Array v2.0 controller started – connecting to ws://localhost:6055
2026-07-19 19:07:29,434  INFO      respeaker-usb  Connecting to LVA at ws://localhost:6055 …
2026-07-19 19:07:29,435  WARNING   respeaker-usb  USB write error: [Errno 32] Pipe error – attempting reconnect
2026-07-19 19:07:29,539  DEBUG     respeaker-usb  LEDs [simulated]: rgb(145, 0, 0), rgb(25, 0, 0), rgb(129, 0, 0), rgb(121, 0, 0), rgb(203, 0, 0), rgb(93, 0, 0), rgb(255, 0, 0), rgb(71, 0, 0), rgb(33, 0, 0), rgb(84, 0, 0), rgb(61, 0, 0), rgb(53, 0, 0)
2026-07-19 19:07:29,596  DEBUG     respeaker-usb  LEDs [simulated]: rgb(124, 0, 0), rgb(22, 0, 0), rgb(110, 0, 0), rgb(102, 0, 0), rgb(255, 0, 0), rgb(79, 0, 0), rgb(216, 0, 0), rgb(255, 0, 0), rgb(255, 0, 0), rgb(71, 0, 0), rgb(51, 0, 0), rgb(45, 0, 0)
2026-07-19 19:07:29,656  DEBUG     respeaker-usb  LEDs [simulated]: rgb(105, 0, 0), rgb(18, 0, 0), rgb(93, 0, 0), rgb(255, 0, 0), rgb(255, 0, 0), rgb(67, 0, 0), rgb(184, 0, 0), rgb(216, 0, 0), rgb(255, 0, 0), rgb(255, 0, 0), rgb(44, 0, 0), rgb(38, 0, 0)
2026-07-19 19:07:29,712  DEBUG     respeaker-usb  LEDs [simulated]: rgb(89, 0, 0), rgb(15, 0, 0), rgb(79, 0, 0), rgb(255, 0, 0), rgb(216, 0, 0), rgb(57, 0, 0), rgb(255, 0, 0), rgb(184, 0, 0), rgb(216, 0, 0), rgb(216, 0, 0), rgb(37, 0, 0), rgb(32, 0, 0)
2026-07-19 19:07:29,763  DEBUG     websockets.client  = connection is CONNECTING
2026-07-19 19:07:29,764  DEBUG     respeaker-usb  LEDs [simulated]: rgb(76, 0, 0), rgb(13, 0, 0), rgb(67, 0, 0), rgb(216, 0, 0), rgb(255, 0, 0), rgb(48, 0, 0), rgb(216, 0, 0), rgb(156, 0, 0), rgb(255, 0, 0), rgb(184, 0, 0), rgb(31, 0, 0), rgb(27, 0, 0)

It might be the best to ask the AI about the differences in the pixel_ring project. I might have myself the time to check this out in a couple of days. But my priorities are a little bit different currently.

It might be even worth a thought about directly calling the pixel_ring module?

[litinoveweedle]

fixed here: #357, enjoy and thanks for the peripheral API. ;-)

[tobuh]

Great! Tested and worked! 🥳