# Pi5 default sound from Fusion Hat i2s

**URL:** <https://forum.sunfounder.com/t/pi5-default-sound-from-fusion-hat-i2s/4616>\
**Category:** General\
**Created:** [May 5, 2026, 11:07pm UTC](https://forum.sunfounder.com/t/pi5-default-sound-from-fusion-hat-i2s/4616 "2026-05-05T23:07:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![danman32](https://avatars.discourse-cdn.com/v4/letter/d/34f0e0/32.png) [@danman32](https://forum.sunfounder.com/u/danman32)\
**Post date:** [May 5, 2026, 11:07pm UTC](https://forum.sunfounder.com/t/pi5-default-sound-from-fusion-hat-i2s/4616/1 "2026-05-05T23:07:12Z")

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I would like to get OS audio on Pi5 to go to the i2s audio built into the Fusion Hat.  
The GoogleVoiceHat is already the device selected when right-clicking on the speaker icon on the desktop.  
Right after boot, no sound comes out if say I play a youtube video.  
However I will get sound from applications if I run a python script that does TTS first.

Ideas on how to activate audio on the fusion Hat that can be used by other apps without having to run a python script after boot?

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**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\
**Post date:** [May 6, 2026, 7:33am UTC](https://forum.sunfounder.com/t/pi5-default-sound-from-fusion-hat-i2s/4616/2 "2026-05-06T07:33:24Z")

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We can create a startup script to activate the Fusion HAT audio chip.

1. Create the service file:  
Run the following command:  
sudo nano /etc/systemd/system/wake-fusion-audio.service  
Then paste the following content into the file:

[Unit]

Description=Wake up Fusion HAT audio chip

After=sound.target multi-user.target

Wants=sound.target

[Service]

Type=oneshot

ExecStart=/usr/bin/python3 -c “from fusion\_hat import device; device.enable\_speaker()”

RemainAfterExit=yes

[Install]

WantedBy=multi-user.target

1. Run these three commands to enable the script to start automatically on boot:  
sudo systemctl daemon-reload  
sudo systemctl enable wake-fusion-audio.service  
sudo systemctl start wake-fusion-audio.service

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**Author:** ![danman32](https://avatars.discourse-cdn.com/v4/letter/d/34f0e0/32.png) [@danman32](https://forum.sunfounder.com/u/danman32)\
**Post date:** [May 9, 2026, 2:55pm UTC](https://forum.sunfounder.com/t/pi5-default-sound-from-fusion-hat-i2s/4616/3 "2026-05-09T14:55:10Z")

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Seems crude to have to use Python to enable the speaker, but it does work.