UPDATE: I added new safeguard​ features to the code so that the license plate can only retract while the car is parked (e.g., when washing the car, etc). Additionally, the system will automatically show the plate as soon as it detects that the car is in motion.
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Here's my retractable plate project with multiple ways to activate it: switch, touchscreen, remote, or geolocation. The goal of this slightly absurd project is to display the license plate during normal use (e.g., driving, parked), but retract the plate when desired. The config was a little overkill, but I wanted to show my kids a practical use of an Arduino with switches and relays. Unfortunately, the practical application stems from getting a fix-it ticket.

I prefer the tactile feel of a momentary switch, but the touchscreen controls match the minimalistic aesthetics of the Model 3. Plus, using HomeLink is convenient if you'd like to have the front plate extend and/or retract automatically at a specific geolocation.

The license plate frame is the "Show 'N Go" by Altec Products ([ Ссылка ]), but I customized it for my Tesla using a DPDT switch, Arduino (to properly work with HomeLink), RF transmitter, and 4ch relay.

On a side note, I have several childhood memories of helping my dad work on his car. After my dad passed away, I appreciate those "boring" learning experiences even more... whether it was fixing an engine together, replacing the brakes, or just mastering the fine art of holding a flashlight really still for him. :-) While it’s impossible to change the oil on an EV, I'm happy that I can do other types of work on my car with my kids... and have fun doing it!

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