ESP32 Ultrasonic Water Level Sensor Housing (with HC-SR04 Mount & Cutout Template)
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Robust housing for ESP32 and HC-SR04 to measure water tank level e.g. with ESPHome and Home Assistant.
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- Creative Commons — Public Domain
This 3-part 3D printable housing system allows you to install an ESP32 and HC-SR04 sensor into a waterproof container or tank lid for use as a smart fill level sensor. It’s perfect for home automation projects using ESPHome and Home Assistant.
🧩 Parts Included:
Inner Housing: Holds the ESP32 and ultrasonic sensor.
Outer Housing: Encloses and protects the sensor unit from outside elements.
Mounting Template: Used to mark and cut a matching hole in the tank lid.
🔩 Hardware Required:
M5 bolts and nuts (e.g., 4x M4 bolts + 4x M4 nuts)
🔧 Installation Steps:
Print all three parts.
Use the cutout template to mark and cut the mounting hole in the tank lid.
Insert the sensor module with the ESP32 and HC-SR04.
Secure the assembly with M5 screws and nuts.
Flash the ESP32 with ESPHome and configure it to read the HC-SR04 sensor data.
🎥 A complete build tutorial (in German) is available here: