Technic Compatible HC-SR04 sensor holder

This is a simple mounting plate for the HC‑SR04 ultrasonic sensor, designed to fit neatly onto technic‑compatible robotics builds. It snaps into standard pin‑hole beams, and once the sensor is in place it stays solid on the front or side of a model, which is great for obstacle‑avoidance or autonomous projects. I made it because I wanted a clean, reliable way to mount the sensor without using tape or glue. The model uses light supports to keep the X‑ and Y‑axis holes perfectly round, so it connects to pin‑hole beams the way it should.