CleanSlate
Overview
CleanSlate is an automated toilet-seat sanitation system designed to improve bathroom hygiene with a completely hands-free cleaning cycle. The system detects when a user leaves, automatically lowers the toilet lid, and performs a multi-stage cleaning process using soap, water jets, and UV-C LED disinfection.
A custom mechanical design integrates spray nozzles, a controlled water flow system, and a drying mechanism inside a redesigned toilet lid. Sensors monitor presence and ensure safe operation, while the automatic cycle provides consistent cleaning after every use.
The goal of CleanSlate was to create a reliable, affordable, and easy-to-install solution that improves hygiene, reduces contamination risk, and elevates the cleanliness standard of shared bathrooms without requiring user intervention.
Key Features
- Automatic User Detection – system activates when the user leaves
- Motorized Lid Control – automatic lowering/raising of the toilet lid
- Soap & Water Spray Cycle – targeted cleaning of the seat surface
- UV-C LED Disinfection – eliminates bacteria after washing
- Timed Dry Cycle – ensures the seat is clean and dry for the next user
- Compact Integrated Mechanism – all components housed inside the lid
- Hands-Free Operation – no contact required by the user
- Improved Hygiene & Safety – reduces contamination in shared restrooms
Challenge
Public and shared bathrooms often suffer from poor hygiene, surface contamination, and inconsistent cleaning. The challenge was to design a compact, fully automated system that could sanitize a toilet seat reliably without requiring any user involvement, while maintaining safety around water and electricity. The mechanism also needed to fit entirely within the toilet lid and operate quickly to avoid delaying the next user.
Solution
The system uses a presence sensor to detect when a user leaves. Once clear, the lid automatically lowers and begins a multi-stage sanitation cycle: -Soap and water spray to remove residue -Rinse cycle with clean water -UV-C LED disinfection for sterilization -Dry cycle, ensuring the seat is ready for the next user -Automatic reopening of the lid The internal structure was designed in CAD to efficiently house pumps, nozzles, UV elements, wiring, and the motorized lid mechanism — achieving a complete hygiene solution in a compact form.
Results
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