After almost 30 years, HP got out of calculator business in the late 1990s. It was making the best quality machines at the time. A few years later, it decided to get back into manufacturing calculators again. The talent that made those machines had been let go, and the result is machines which can't come close to the older 1990's units. Read more on this here

Many fans of the old machines have made HP calculator emulators, programs that run on your computer and display all the buttons and the screen of a virtual HP calculator. Using keyboard and mouse, one can use the virtual calculator like the real item. Using a mouse to run a calculator is not easy.

My idea is to design a simple calculator that can be downloaded and 3D printed. This can be done by anyone who has access to a 3D printer. Just download my CAD files, modify them if necessary to suite your needs and email them to a 3D print shop. The plastic parts will be at your door in a few days.

We need an electronic person to design the circuit board, it should be cheap and easy, since it will be very similar to a keyboard on your desk.

The circuit maker can sell his product cheaply online, the end user, makes his 3D plastics parts, and downloads a free emulator software to assemble and run this USB calculator.

Please fight the urge to compare this to a mobile phone. This is designed to sit on your desk not on your face, it needs to be easy to assemble; and must remain ergonomic and economical to build.

1- You can customize colors
2- You can customize the text or translate it. Key can be made to have Russian, Spanish or even Mayan alphabet on them.
3- You can save your calculator data on the hard drive of your PC, print it or email it to your colleagues.
4- You can save your calculator programs and edit them on your computer screen
5- Your emulator runs as fast as your PC processor, which is orders of magnitude faster than the original calculators.
6- You can upgrade your Cad files to improve on the design. Or simply reprint the same parts when you break the calculator.
7- You can run an RPN calculator which is more logical that the common algebraic units.
8- No silk screening is required.

I am making my work “Open Source”, which means I have the copyright, but it is open to everyone to change the design, but can not sell it. Free for all. I retain the right to control the templates.

I am looking for volunteers to design the circuit and prototype it. Meanwhile, I will complete the case and the buttons.

3D printing experts are encouraged to contact me for suggestions.

Solids are for reference only DO NOT print them yet.


Discuss this model in the 3D-Printing-Community