Sonic Pi Soundboard controlled from your phone

soundboard.md

• Install Control on your phone (for Android, but it, or something similar, is probably available for iOS).
• Run it, tap on "menu", then "Destinations", and then the "+" symbol. For the destination URL enter the IP address of your computer running Sonic Pi, and for the destination port enter 5005, then click "Add".
• In your terminal, run the soundboard.sh script (or just copy and paste the last line). This listens on a public port and forwards any UDP packets to Sonic Pi (because Sonic Pi only listens on localhost).
• Copy and paste the soundboard.rb code into a Sonic Pi buffer and run it.
• In the Control app, tap on "Interfaces" and select "Monome Emulation".
• Tap the grid, and you should hear sounds.
• The sliders adjust volume and low-pass cutoff.

soundboard.rb

set_sched_ahead_time! 0.01

with_fx :lpf do |fx|
  
  live_loop :sample do
    x, y, i = sync "/mlr/press"
    if i > 0
      g = sample_groups[x]
      s = sample_names(g)[y]
      puts x, y, g, s
      sample s
    end
  end
  
  live_loop :amp do
    a = sync "/slider1"
    control fx, amp: 2*a[0]
  end
  
  live_loop :cutoff do
    a = sync "/slider2"
    control fx, cutoff: 50 + 70*a[0]
  end
  
end

soundboard.sh

#!/bin/bash

nc -u -l 5005 >/dev/udp/127.0.0.1/4559