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  • Echo Park - Ultrasonic Parking Assistant

    A modern ultrasonic parking assistant is designed for older vehicles lacking sensors. Using a TDK USSM sensor and an ESP32-S3 MCU, the system provides visual and audible indicators for precise parking in a compact residential garage. Motivation I have…

  • Echo Park – Sound tube and Hardware Cleanup Post 5

    Sound tube I'll have to give some credit to beacon_dave again for cajoling me into trying a sound tube to make the ultrasonic sensor more directional. I had been complaining about latency I was getting from trying to use a moving average filter to reduce…

  • Echo Park – License Plate Recognition Post 4

    Software woes A feature that I wanted to add to my project is license plate recognition of the vehicle that just parked. No real need for it, but it looked straightforward and there are a few different project examples for an ESP32 based camera, so…

  • Echo Park – Hardware Design Post 3

    Hardware Description Features Ultrasonic Sensor measures vehicle position from 225cm to 50cm Visual indication of position in 25cm steps Audible and Visual feedback when position is less than 50cm Onboard display of measured distance Vehicle…

  • Echo Park – Sensor Characterization Setup Post 2

    Sensor Characterization Setup I have used a lot of the simple HC-SR04 Ultrasonic Ranging Modules that have similar range capabilities (2cm-4m). These modules use separate send and receive elements and provide the transmit and receive circuits but use…

  • Echo Park – Ultrasonic Parking Assistant Post 1

    Echo Park – Ultrasonic Parking Assistant Introduction This is my initial post in the In Reach! Ultrasonic Sensor Sensing Challenge. I have a requirement for a parking assistance indicator that will indicate when a vehicle is parked at the appropriate…