RPN Calculator ( Like the old HP calculators )
thingiverse
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. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator 2 Rafts: No Supports: No Resolution: Standard Infill: 20%
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