DIY Garage Parking Sensor

This is a DIY ultrasonic parking sensor that helps you park your vehicle in the exact spot every time.
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updated November 14, 2025

Description

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This is a DIY ultrasonic parking sensor that helps you park your vehicle in the exact spot every time.  

The LEDs turn blue when it senses a vehicle within about 8 feet.  Then green lights gradually move toward the middle as vehicle gets closer.  When vehicle reaches parking spot, the LEDs turn red.

This project is based on a simple ESP8266 microprocessor.  It includes everything you need to make this project including schematic, circuit board, software, and electronics.  It is open sourced so you can learn how everything works.

I like to create 3D models that follow these criteria:

  • Do not require supports – I HATE supports.
  • Print quickly – optimized for 0.4mm nozzle diameter with 2 exterior wall thickness
  • Are easy to access for maintenance – I like to upgrade parts, but I hate to disassemble the entire model just to change out one part.
  • Are chamfered on the bottom layer – this helps those who don't have a perfectly aligned bed and may still have “elephant foot” artifacts.
  • Do not waste plastic – many designers make parts that are WAY thicker than are required for structural strength.  This just makes the parts bulky and take longer to print.

Notes

  • NO SUPPORTS REQUIRED
    • All parts print without supports.

Building Instructions

Model origin

The author marked this model as their own original creation.

License