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Conducting electronic sounds with PicoRuby (on ...

Conducting electronic sounds with PicoRuby (on Rails)

Avatar for Ryo Ishigaki

Ryo Ishigaki

April 18, 2026

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  1. About me •Ryo Ishigaki (石垣 良) •Member of Hamamatsu.rb •Embedded

    software engineer •Making synthesizers as a hobby 2/6
  2. PRMC-1 (type-4) •PRMC-1 is a simple MIDI controller using PicoRuby/R2P2

    • https://github.com/risgk/midi-controller-prmc-1 •See RubyKaigi 2025 LT for details • https://rubykaigi.org/2025/presentations/lt/ •Licensed under CC0 3/6
  3. PRA32-U2 v2 •PRA32-U2 is a polyphonic synthesizer for Raspberry Pi

    Pico 2 • https://github.com/risgk/digital-synth-pra32-u2 •Licensed under CC0 4/6
  4. Speaker •Sony SRS-XB32 is a portable wireless speaker • https://www.sony.jp/active-

    speaker/products/SRS-XB32/ •Having an analog audio input jack •Discontinued 5/6