Aquarium automation keeps the fish fed and the lights on

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Anyone who owns a fish tank knows that a good amount of care is required to keep fish happy, healthy, and most of all – alive. [Vicente Jiménez] usually has no problem keeping up on the day to day maintenance such as feeding and switching the tank light, but he wanted to automate these processes for times when he can’t be home to take care of the fish (Translation).
His aquarium automation project is meant to cover three separate parts of the operation: light control, feeding, and pump regulation during feeding times. [Vincente] picked up an STM8L Discovery board to control his system, which enabled him to easily control the automation of all three.
He constructed the feeding mechanism using an old cassette player motor, which turns his food drum (an old film canister), twice a day at specified feeding times. Before the drum is turned to dispense food, the STM8L turns off the aquarium’s pump via a relay to ensure it doesn’t get clogged in the process. During the day he keeps the tank illuminated, but once night falls, the microcontroller shuts the lights off so the fish can get their rest.
There’s no video of the system in action, but [Vincente] has detailed its construction pretty thoroughly in his blog, so be sure to check it out if you are in need of something similar.

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