RPN Calculator ( Like the old HP calculators ) by jimlee

Last crawled date: 3 years, 1 month ago

I wanted a RPN calculator like the old Hewlett Packard ones. So I made my own.
Here's a link to the writeup with instructions for building your own: http://leftcoast.biz/iWeb/Left_Coast/The_calculator.html
A link to it running : https://www.youtube.com/watch?v=s-vngUi7-kw
The touchscreen : https://www.adafruit.com/product/1947
The power system : https://www.adafruit.com/products/1944
The power switch : https://www.adafruit.com/products/805
The battery : https://www.adafruit.com/products/1578
The processor : https://www.adafruit.com/products/2756
The beeper : https://www.adafruit.com/products/160
Fine 24-30 awg silicon wire. You need it fine and flexible.
The code?
See the writ up for instructions and links to the code.
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1/1/21 : UPDATE Better case available : https://www.thingiverse.com/thing:4706082
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