As a resident of California I'm conscious of the water that is wasted around the house. Approximately 20% of household water consumption comes from showering. By capturing clean water that is normally wasted as the shower heats up we can create a reservoir for use watering plants, cleaning or as emergency potable water.
The automated system is intended to fit in standard showers, be solar charged and battery powered for safety reasons, and have redundant failure modes to protect your house from leaks.
This project was created partially to participate in the Hackaday prize 20222 Save the World Wildcard challenge.
I assembled the pipe and valve and tested using a bench power supply. The valve actuated and the system seemed to work as intended. No water left from the shower head while the valve was open. I tested at 12V and saw 0.323A (3.87W) power consumed.
I need to create a waterproof enclosure for the electronics and solenoid and consider how to fix this to the shower wall.
I also need to test the battery system for the following:
Power consumption while holding solenoid open (predicting 1.1A at 3.6V)
Approximate discharge curve/battery capacity (expecting well under 2300 mAh)
Charge rate in various ambient lighting conditions