Problem with leds on ReSpeaker Mic Array v2.0

[Bergoglio]

Good afternoon,

I installed wyoming-satellite on this hardware :

• raspberry pi 5
• ReSpeaker Mic Array v2.0

I applied this tutorial , satellite and local wake word detection work good but I have problems with Led service.

When I launch 4mic_service.py, I receive an error and, so, 4mic_leds.service cannot start :

I don't understand what is the problem (I'm quite a noob).

Can You help me ?

[Bergoglio]

Ok, now I understand more : Respeaker 4Mic HAT is not ReSpeaker Mic Array v2.0 .........
So, 4mic_service.py is for a different hardware from mine.

But the problem, now, is how can I pilot the ReSpeaker Mic Array v2.0 leds ?

[tech-kev]

I also use the ReSpeaker Mic Array v2.0 and you can find out how to control the LEDs in the docs here.

I created the following 4 scripts and then integrated them into my systemd service:

detection.py:

#!/usr/bin/env python3
import time
from pixel_ring import pixel_ring

if __name__ == '__main__':
    pixel_ring.change_pattern('echo')
    while True:
        try:
            pixel_ring.wakeup()
            break
        except KeyboardInterrupt:
            pixel_ring.off()
            break

off.py:

#!/usr/bin/env python3
import time
from pixel_ring import pixel_ring

if __name__ == '__main__':
    pixel_ring.change_pattern('echo')
    while True:
        try:
            pixel_ring.off()
            break
        except KeyboardInterrupt:
             pixel_ring.off()
             break

stt-stop.py:

#!/usr/bin/env python3
import time
from pixel_ring import pixel_ring

if __name__ == '__main__':
    pixel_ring.change_pattern('echo')
    while True:
        try:
            pixel_ring.think()
            time.sleep(3)
            pixel_ring.think()
            break
        except KeyboardInterrupt:
             pixel_ring.off()
             break

tts-start.py

#!/usr/bin/env python3
import time
from pixel_ring import pixel_ring

if __name__ == '__main__':
    pixel_ring.change_pattern('echo')
    while True:
        try:
            pixel_ring.speak()
            time.sleep(3)
            pixel_ring.set_brightness(5)
            break
        except KeyboardInterrupt:
             pixel_ring.off()
             break

After that add the following to your wyoming-satellite.service, reload deamon and restart the service.

        --startup-command /home/USERNAME/PATH_TO_SCRIPTS/off.py \
        --detection-command /home/USERNAME/PATH_TO_SCRIPTS/detection.py \
        --stt-stop-command /home/USERNAME/PATH_TO_SCRIPTS/stt-stop.py \
        --tts-start-command /home/USERNAME/PATH_TO_SCRIPTS/tts-start.py \
        --tts-played-command /home/USERNAME/PATH_TO_SCRIPTS/off.py \

Now the ring lights up like Alexa. Other things can be integrated using the docs, such as different brightness/colors etc.

You can also use other actions and call your own scripts for other functions, see here.

[Bergoglio]

@tech-kev : thank You very much !!!

Your reply is perfect for a noob like me.

[lbouriez]

Hell, I installed pixel_ring using sudo pip install pixel-ring --break-system-packages
the tts-start work, I get the blue led but the off for example gives me

Traceback (most recent call last):
  File "/home/lbouriez/wyoming-satellite/script/off.py", line 3, in <module>
    from pixel_ring import pixel_ring
  File "/usr/local/lib/python3.11/dist-packages/pixel_ring/__init__.py", line 13, in <module>
    pixel_ring = PixelRing()
                 ^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/pixel_ring/apa102_pixel_ring.py", line 22, in __init__
    self.dev = APA102(num_led=self.PIXELS_N)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/pixel_ring/apa102.py", line 90, in __init__
    self.spi.open(bus, device)  # Open SPI port 0, slave device (CS) 1
    ^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory

What am I missing ?