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Graphing Scientific Calculator Based on the ESP32

github.com

11–13 of 13 posts

Re: Graphing Scientific Calculator Based on the ESP32

#11
post #4

The site is broken, "Read the manifesto" and "View specs" links don't work. THE MOAT 100% OPEN Open Source Hardware and software that belongs to everyone. And misleading. Also, what's up with all the junk in readme? The project structure, random stats, tables. How bloating readme should help? upd: Okay, there is a tiny disclaimer that the project is vibe-coded. https://github.com/El-EnderJ/NeoCalculator/blob/a7712be5…

The licensing information is very conflicting

> Hardware and software that belongs to everyone. Waiting to be OSHWA certifie

> Hardware & Industrial Design All rights reserved. The hardware design, including but not limited to Are proprietary and the intellectual property of Juan Ramón. No commercial use or reproduction of the hardware is permitted without express authorization.

Same for software, the comparison table says MIT, other parts say GPL v3.

Also the whole concept of exam mode which is in any way effective seems contradictory with GPLv3. Any hardware means which would limit the ability to use modified version of software would violate GPLv3.

Re: Graphing Scientific Calculator Based on the ESP32

#12
If you want a serious OSS calculator, a great choice is the Free42 project by Thomas Okken, which is a GPL-licensed project that is entirely compatible with the HP-42.

https://thomasokken.com/free42/

Not really a graphing calculator (although you can plot a bit) but is a proper old-school rpn scientific calculator with programming, numerical integration and solver, amazing complex number support etc, and has stood the test of time. All the things you would expect if you've used an HP-42 or similar.

Re: Graphing Scientific Calculator Based on the ESP32

#13

If you want a serious OSS calculator, a great choice is the Free42 project by Thomas Okken, which is a GPL-licensed project that is entirely compatible with the HP-42. https://thomasokken.com/free42/ Not really a graphing calculator (although you can plot a bit) but is a proper old-school rpn scientific calculator with programming, numerical integration and solver, amazing complex number support etc, and has stood th…

And you can get hardware that runs Free42 from Swiss Micros (DM42).
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