Conducting electronic sounds with PicoRuby (on Rails)

Lightning Talks on Hakodate Tram at RubyKaigi 2026 https://smarthr.connpass.com/event/385269/ #rubykaigi2026_smarthr

URLs in the slides:
- PRMC-1 https://github.com/risgk/midi-controller-prmc-1
- RubyKaigi 2025 LT https://rubykaigi.org/2025/presentations/lt/
- PRA32-U2 https://github.com/risgk/digital-synth-pra32-u2
- SRS-XB32 https://www.sony.jp/active-speaker/products/SRS-XB32/

Transcript

1. Conducting electronic sounds with PicoRuby (on Rails) Lightning Talks on Hakodate Tram at RubyKaigi 2026 Ryo Ishigaki
2. About me •Ryo Ishigaki (石垣 良) •Member of Hamamatsu.rb •Embedded software engineer •Making synthesizers as a hobby 2/6
3. 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
4. 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
5. 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
6. Live performance! 6/6