Alternatives

Products that do what SevenFortyFun, a transistor level op amp kit does

1. 1AA
   An attempt to rethink a music sequencer design▲305

   2017 · github.com

2. 2
   Audio Kit▲96

   Open-source audio synthesis, processing & analysis platform.

   2014

3. 3
   KRFT 1.5.0▲110

   A modular instrument for music production

   2017

4. 4TZ
   The ZynAddSubFX open source musical synthesizer▲53

   2018 · zynaddsubfx.sf.net

5. 5T3
   TB-303 Synth, Drum Machine and Sequencer in Web Audio▲238

   2016 · errozero.co.uk

6. 6OB
   Oscillator Bank / Spectral Synthesizer▲36

   2020 · github.com

7. 7AR
   A realtime node-based audio synth based on LLVM▲78

   2018 · github.com

8. 8AT
   A tiny portable MIDI looper▲35

   2020 · beeplab.one

9. 9PC
   PJON – Communications bus system for Arduino▲44

   2015 · github.com

10. 10
    Arduino▲111

    Build your own electronics

    2014

11. 11
    Spinbox▲76

    A DIY portable turntable kit

    2017

12. 128B
    8-bit Sounds – Studio2600 for the VCS (Atari 2600)▲78

    2018 · masswerk.at

13. 13CA
    CircuitLab, an in-browser schematic editor and circuit simulator▲46

    2012 · circuitlab.com

14. 14AJ
    A JavaScript emulator of the Synthi A synthesizer▲68

    2016 · alexnisnevich.github.io

15. 15AA
    An Actually-Tiny Basic for Arduino▲24

    2020 · github.com

16. 16T1
    TR-101 – A drum synth/sequencer made with Vue and the web audio API▲105

    2017 · inverted3.gitlab.io

17. 17PA
    PJON_ASK – Radio multimaster communications bus system for Arduino▲27

    2015 · github.com

18. 18PO
    PJON – Open-source Arduino multimaster communications bus system▲38

    2015 · github.com

19. 19PR
    Pylectronics – Reproduce digital electronics in Python▲29

    2021 · github.com

20. 20AH
    An HN-Style Site for Integrated Circuits Folks▲21

    2014 · clktok.efabless.com

21. 21OB
    Oscillator Bank / Spectral Synthesizer driven by graphics data▲23

    2021 · fsynth.com

22. 22NA
    Nighthawk: A stealthy, simple, unobtrusive music player▲64

    2018 · github.com

23. 23BV
    Bezie – Virtual MIDI controller for complex automation▲41

    2017 · bezie.io

24. 24BA
    BandFu, an experimental audio playground▲5

    2013 · bandfu.com

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