RPN four arithmetic calculator on ATtiny85 & Arduino IDE
This is a tiny form factor, tiny program(sketch) and tiny function RPN (Reverse Polish Notation) calculator.Its functions are +-*/ only. Four (4) level stack, ENG (engineering) mode display and auto sleep are implemented.
Development environment is Arduino IDE(1.8.13) and ATtinyCore.
I reffered these sites. Thanks to all!
SpenceKonde/ATTinyCore:
https://github.com/SpenceKonde/ATTinyCore
RPN calculator part - ARC by deetee aka zooxo:
https://github.com/zooxo/arc/find/master
One I/O Keypad reader part - web app by synapse:
https://synapse.kyoto/calc/ResDiv/page001.html
Sample of sleep mode with PCINTn (not INT0):
https://okiraku-camera.tokyo/blog/?p=7567
I wrote blog about this item in Japanese. Please access if you need.
https://pado.tea-nifty.com/top/2021/01/post-2c053f.html