https://blog.arduino.cc/2013/02/25/the-ultimate-cat-litter-box/
Showcase your project: ultimate cat litter box | Arduino Blog
Feb 25, 2013 - This project by Greg is about building a smart litter box for his cats: We have three cats and the litter is difficult to control. So I had been thinking...
showcase your projectcat litter boxultimatearduinoblog
https://youthtimemag.com/un-sdg-action-awards/embed/
UN SDG Action Awards: Showcase Your Project In New York
un sdg action awardsshowcase your projectnewyork