When you could have three cats and three people, you could have one drawback: feeding them on a schedule with out over or underneath feeding them. Even if there was just one human within the equation, the Cat-o-Matic 3000 would nonetheless be a great tool.
The brains of this operation is an ATmega88PA leftover from one other venture. There’s a no-name voltage regulator that steps up the 2 AA cells to five volts. Timing comes from a 32 kHz crystal that enables the microcontroller to remain in power-saving sleep mode for lengthy durations of time.
Creator [0xCAFEAFFE] says the firmware was cobbled collectively from different initiatives. Essentially, it wakes up as soon as per second to increment the uptime counter after which goes again to sleep. Short-pressing a button exhibits the feeding standing, and long-pressing it can reset the timer.
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