Introduction: Water Conservation System
The Water Conservation System is installed underneath the sink and regulates water flow from the water source to the faucet. If the water is flowing for more than 10 seconds (can be adjusted in code) as detected by a flow meter, the water will shut off using a solenoid valve. A reset button must be pressed on the unit for water to begin flowing again. The purpose of this device is written below.
Dripping or accidentally running sinks are a major problem in the US, a dripping faucet can waste 2,082 gallons of water a year, dripping once per second according to The United States Geological Survey. This problem needs to be solved, to stop the waste of water in US homes as well as another problem, a sink that is left on accidentally, which can overflow and cause water damage to the home. These problems can be solved with my device. A device which detects when water is going through the faucet over a period of time and slowly shuts off the water over time when this is detected. This can save water to stop sinks that are left on or remind a person to shut off the water by slowing the flow over time. As an emergency if a pipe breaks or the sink overflows because of a clogged drain, there will be an emergency sensor on the floor which shuts off the water immediately. My device will stop the waste of water from dripping or running sinks as well as stop running sinks from overflowing.
- Arduino Uno
- Power Distribution Bar
- Three 9V Batteries
- DC Power Connector
- 9V Battery Pig Tails
- 9V Battery Connection Box
- TIP120 Transistor
- Prototyping Board
- Solenoid Valve
- Flow Meter
- Project Case
- Reset Button
- Power Switch
Construction Materials: Soldering Iron, Lead Free Solder, Heat Shrink Tubing, PVC Pipe Glue, Paint, Wood Glue, Screws
Place the solenoid valve and flow meter in the project box and connect them with PVC pipe, make sure to have an inlet and outlet for the water connections.
Connect the solenoid valve to a TIP120 circuit, this circuit being connected to a 9V battery to power the solenoid valve. Connect this circuit to the Arduino Uno.
Connect the data pin on the flow meter to the Arduino Uno.
The TIP 120 Circuit is outlined in the circuit diagram above.
Connect the power pins on the TIP120 circuit as well as the flow meter to the power bar.
Connect the power bar to the 5V and GND pins on the Arduino Uno.
Connect a switch to the project box, inline with another 9V battery and a DC jack to power the Arduino Uno and control whether the device is on or off.
Connect a reset button (Normally Off) to the Arduino Uno on another digital pin= and attach this switch to the project case
Step 6: Done!
Close the project box and upload the code (attached) to the Arduino Uno. (Be Sure to Assign the Correct Pins in Code Based on what you have connected)
You are good to go! Hook up the device to your water inlet and faucet and you are set!
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