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HydroFloat

Piezoelectric Submersible Level Sensor using ESP32 X4 Relay board.

Relays are triggered at configurable water levels

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  • Use Wifi Access Point, default AP: HydroFloat, default PW: 12345678. Browse 192.168.4.1 and go to Configuration Page to set the levels.

    • Works with a Submersible Level 4-20ma Pressure Sensors.

    ESP32 X4 Relay Board
    Piezoelectric Submersible 4-20mA Level Sensor

    Wiring

    Device Pin ESP32
    FloatLevel red 24VDC
    Use 135Ω (2 X 270Ω in parallel) from A0 to GND
    FloatLevel black A0

    Used the following development tools;

    • Visual Studio Code with the PlatformIO extension.

    License

    
 Copyright (c) 2025. ClassicDIY

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.