/challenges-projects/design-challenges/pi-iot/b/blog/posts/a-raspberry-pi-self-cleaning-litter-box-for-my-cat-that-tweetsI removed the manufactures electronic circuit board and replaced it with a Raspberry Pi computer so that I could customize the operation of my cat's Litter Robot.My friend suggested that I also make it tweet. You can follow my cat's litter box usage en-USTelligent Community 12