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This project contains firware code and KiCad schematics/PCB files for simple door latch reminder.
Me and my wife forget to close our flat entrance door from time to time. What will you do about that? :)
This project is simple hardware solution to remind us about open door. It's not the simplest nor most elegant solution, but more like excuse for practicing skills in embedded software development and electrical engineering.
Solution is quite simple:
Complete BOM is in project files, but here are key parts used in a project:
You need to have standart AVR toolchain is installed (e.g. avr-gcc, avr-objcopy...). Beyond that building firmware is as simple as:
$ make
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