Open Source ATtiny3226 Arduino Calculator – Hardware, Case & Code Build
Автор: element14 presents
Загружено: 2025-08-14
Просмотров: 5387
Clem AKA @MAYERMAKES builds a fully open-source, battery-powered desktop calculator from scratch, powered by an ATtiny3226 microcontroller for efficient 3V operation. It features a 20x4 FORDATA LCD, Cherry MX key switches, and a custom PCB designed for matrix scanning with N-key rollover. The case combines a repurposed Multicomp Pro die-cast aluminum lid with 3D-printed PETG panels and keycaps. Programmed in Arduino using the Adafruit Keypad and LiquidCrystal libraries, the code handles basic four-function math while showing the limits of an 8-bit system. All design files and source code are free to download for modification: https://bit.ly/4lsGIAc
[06:33] Schematic
[10:32] The PCB
[12:33] Populating the PCB
[13:33] Assembly
[15:41] The Code
[18:35] Finishing Touches
[23:43] Conclusion
Engage with the element14 presents team on the element14 Community - suggest builds, find project files and behind the scenes video: https://bit.ly/3tmdewv
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