Splash back is a scourge of our archaic crapping technology. As alternative to perching several feet above the bowl comes the Arduino Toilet Foamer -- permitting a user to create a more splash-resistant, sanitary and refreshing bowl environment.
Bowels a-grumblin'? Activate the Arduino Toilet Foamer from your phone app -- triggering the Arduino relay(s) for the aerator and solenoid value which injects a specified dosage of glycerin and soap in to the bowl water where it becomes en-frothed by gyrating bubbling action. Exhume waste as necessary.
Ingredients 1. Arduino Uno 2. 1/8ID 1/4OD Vinyl Tube 3. TIP120 (2) 4. 2.2K R (2) 5. 4001 Diode (2) 6. 5V Relay 7. Aerator (40 Gal) 8. 1/8 Tee for Two 9. 12V Solenoid Valve 10. Plastic Container 11. 1/8 Check Valve 12. 12V Power Supply 13. Glycerin 14. Liquid Dish Soap 15. Aerator Bubbler 16. Bluetooth or WiFi (Optional) Adafruit Neopixel Strip 1Knf C 47 R
Notations 1. Advice to straighten vinyl tubing is to boil water and quickly submerge. Dry in the desired angle. Cure shorter pieces by submerging in cold water. 2. Do not use concentrated liquid dish or hand soap -- aka "Ultra" brand. 3. Would-a could-a shd-a larger aerator, (2) more valves and a variant bubbler to increase foaming efficiency. 4. Hypothetically, water reduction could be obtained by foaming water in a toilet. Elon Musk, you can send a check or money order to... 5. Bubble Recipe: Soap 4:1 Glycerin