HC-SR04 Ultrasonic Sensor Mounting Bracket

An HC-SR04 sensor with no mount tends to end up hot-glued to a chassis or dangling on its own wires, which is fine for a bench test and a liability once the robot actually starts moving. This bracket cuts that problem out entirely: an acrylic mount shaped specifically for the HC-SR04's two round transducer housings, with mounting holes sized to bolt straight onto a standard robot chassis.

Being acrylic keeps it light enough not to add meaningful weight to a small robot build, while still holding the sensor rigidly in place - loose or wobbling mounting is exactly what introduces false distance readings on a moving robot, since the sensor's aim shifts with every vibration.

Standard hardware for any obstacle-avoidance or distance-sensing robot build using an HC-SR04, keeping the sensor aimed consistently forward instead of drifting with vibration or its own wire weight.