betaflight VS epsilon

Compare betaflight vs epsilon and see what are their differences.

epsilon

Modern graphing calculator operating system. (by numworks)
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betaflight epsilon
149 12
7,885 1,680
2.2% 0.8%
9.4 9.9
7 days ago about 1 month ago
C C++
GNU General Public License v3.0 only GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

betaflight

Posts with mentions or reviews of betaflight. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-02-02.

epsilon

Posts with mentions or reviews of epsilon. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-01-04.
  • Do you know any C++ open source firmware projects for a device, RTOS or no-OS based?
    4 projects | /r/embedded | 4 Jan 2023
  • NumWorks: An open-source graphing calculator (with Python and Rust support)
    3 projects | news.ycombinator.com | 26 Aug 2022
    I've engaged in debates on HN about the definition of "open source" in the past, so there might be some disagreement about the meaning of the title.

    I've settled on using "OSI open source" to avoid this, since those discussions are uniformly tiring and unproductive.

    That said, I agree with parent: the repo specifically has a section regarding copyright and it simply says that all rights are reserved[0]. This is proprietary software, disallowing copying, distribution, and derivative works. It's weird, since even cloning the repo appears to be a violation of their stated terms, though they supply instructions for building the software yourself that of course requires copying the code to your machine first[1].

    Copyright is weird.

    [0]: https://github.com/numworks/epsilon#copyright

    [1]: https://www.numworks.com/resources/engineering/software/buil...

  • Phi – Jailbreak for new locked-down Numworks calculators
    1 project | news.ycombinator.com | 27 Mar 2022
    They still are open source [1].

    If I had to guess, the reason they locked the bootloader is the same reason they removed the symbolic math functionality (which is re-added in Omega [2]), test accreditation.

    They want to create a calculator to provide a good and viable alternative to TI. They can only do that if their calculator is allowed on tests like the ACT, SAT, etc.

    [1]: https://github.com/numworks/epsilon

  • Epsilon on raspberry pi?
    1 project | /r/numworks | 14 Dec 2021
    Yes, you can compile it yourself from source, but the Python app isn't very stable since some file is only adapted to x86-64 and not ARM. E.g. mandelbrot(20) crashes directly. https://github.com/numworks/epsilon/issues/1642
  • Port Epsilon to another microcontroller?
    1 project | /r/numworks | 24 Nov 2021
    Yes : https://github.com/numworks/epsilon/pull/534
  • Characters found using ordinary print() and chr() from module builtins - same as in kandinsky
    1 project | /r/numworks | 2 Nov 2021
    Jokes aside, the epsilon firmware that's powering the NumWorks calculators is Unicode-capable. Specifically, https://github.com/numworks/epsilon/blob/master/kandinsky/fonts/code_points.h is the list of codepoints supported by the firmware. Some of them have special purposes, for example codepoints around 0x300-0x36F are combining diacritical marks meant to be combined with other codepoints.
  • I would like to make a request
    1 project | /r/numworks | 16 Oct 2021
  • NumWorks – An open source Graphing Calculator
    2 projects | news.ycombinator.com | 12 May 2021
    That is beautiful. I wish the company great success.

    > Epsilon is a high-performance graphing calculator operating system.

    > It includes eight apps that cover the high school mathematics curriculum.

    https://www.numworks.com/resources/engineering/software/

    https://github.com/numworks/epsilon

    Looks like this single codebase is used to build for the calculator device, and all targets for the simulator: Android, iOS, macOS, Windows, and the web.

    > NumWorks Epsilon is released under a CC BY-NC-SA License.

    Attribution-NonCommercial-ShareAlike 4.0 International - https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode

  • Midterms
    1 project | /r/numworks | 29 Mar 2021
    Indeed, for the equation graph, it should be possible in v17 according to https://github.com/numworks/epsilon/issues/1787
  • Graph a circle
    1 project | /r/numworks | 21 Feb 2021
    You can't plot implicit graph yet, but that's in numworks mind (see the link). Currently, the only solution you have is to convert it to parametric, and change the setting of the function.

What are some alternatives?

When comparing betaflight and epsilon you can also consider the following projects:

inav - INAV: Navigation-enabled flight control software

Omega - Omega 1.22, the next evolution of Epsilon! Now available for your Numworks calculator!

QUICKSILVER - Flight Controller Firmware

mbed-os - Arm Mbed OS is a platform operating system designed for the internet of things

betaflight-configurator - Cross platform configuration tool for the Betaflight firmware

crazyflie-firmware - The main firmware for the Crazyflie Nano Quadcopter, Crazyflie Bolt Quadcopter and Roadrunner Positioning Tag.

blheli-configurator - Cross-platform application for BLHeli firmware flashing and configuration

EmuFlight - EmuFlight is flight controller software (firmware) used to fly multi-rotor craft.

ExpressLRS - STM32/ESP32/ESP8285-based High-Performance Radio Link for RC applications

spaceflight-autopilot - 🚀 A series of scripted spaceflight maneuvers for a rocket simulator

unified-targets - Target configurations for Betaflight Unified Targets

BLHeli - BLHeli for brushless ESC firmware