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01Home 02Light Show 03Lock Sound 04USB Guide 05Account

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Write to me

A question about the tools, a bug, or a problem with your account. I reply within a day or two.

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Email address Where my reply goes.

Message If it is a bug, say which page and what your car is.

Most of it is already answered on the FAQ.

Start here

Two tools, one USB stick

Neither one is finished yet.

Start a light show Make a lock sound

Sonlit

Light shows and lock sounds for Tesla vehicles, authored in the browser. Your audio stays on your device unless you ask it not to.

06Tools

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Light Show
Lock Sound
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07Project

About Sonlit
Credits and sources
Tesla’s light-show repository

08KeoCodes

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09Legal

Sonlit privacy
Sonlit terms
KeoCodes privacy
KeoCodes terms
Copyright
Accessibility

Build: Phase 1, Lock Sound. Neither tool is usable yet.
Vehicle: Model Y 2020–2024 first.
Grid: 48 channels at 20 ms a frame.
Uploads: None. Your audio stays on your device unless you ask.

Disclaimers

Light show file format, channel definitions and vehicle behaviour are documented by Tesla, Inc. at github.com/teslamotors/light-show and in Tesla’s owner documentation. Tesla and Model Y are trademarks of Tesla, Inc., used here only to identify the vehicles these tools support. This is an independent project by Derrick Keo and is not affiliated with, endorsed, sponsored or approved by Tesla, Inc. The car drawings on this site are my own stylized diagrams, not Tesla artwork.

Cybertruck is also a trademark of Tesla, Inc. No Tesla logo, lettering or nameplate appears anywhere on this site, and nothing here is licensed by Tesla, Inc.

This site runs no analytics, sets no tracking cookies and loads no third-party scripts, fonts or images. The one cookie it sets, on every page, is the session cookie that keeps a signed-in account signed in and protects the forms from cross-site posts; it holds a random identifier and nothing else, so there is nothing here to consent to and no banner asking you to.

© 2026 Derrick Keo. All rights reserved.