Cat Litter Cleaning Reminder (Arduino Nano)

thingiverse

Hi,\r\n\r\nI wanted to share this cool cat litter cleaning reminder I created for myself.\r\nI need to clean our cats litter box every two days, so I came up with a fun way to remember.\r\n\r\nThe process works like this:\r\nAs soon as the Arduino is reset or turned on, it goes into sleep mode for 48 hours.\r\nAfter that, the servo arms move down and up.\r\nNext, the Clean LED flashes, and the buzzer sounds.\r\nThen, I wait 30 minutes and repeat the whole process.\r\n\r\nYou can check out a video showing how it works (I shortened the time periods):\r\nhttps://youtu.be/m_NYlKAETmA\r\n\r\nThe LED I used sometimes appears dim, so I added a buzzer to make sure I notice it.\r\nBefore you start building, remove the ISP connectors from your Arduino Nano.\r\nI hot-glued a reset switch on the left side of the board.\r\n\r\nThere's space at the top for an RTC (which I didn't use) and the buzzer, but unfortunately, I only had access to a large piezo speaker in the images, so I double-sided taped it to the back.\r\n\r\nI encountered some issues with the servo arms because there seems to be variation between different brands; you'll need to adjust yours accordingly.\r\n\r\nYou can find my Arduino code attached, and please keep in mind that this was my first Arduino project, so be gentle with your feedback ;)\r\n\r\nHere's what you need to glue:\r\nFor the front face, print the screw mounts and superglue them on.\r\nFor the arms, print the servo mount and guide rail, then superglue them on.\r\n\r\nYou'll likely need supports from your build plate for most items since you need space for the mounting holes.\r\nThe screw/servo mounts and guide rail will require some extra care when printing.