Quick Sonic Pi script using MIDI in from a WX11 wind controller to control amplitude. Based on Robin Newman’s blogpost: https://rbnrpi.wordpress.com/2016/04/01/a-completely-different-way-to-use-sonic-pi-with-a-midi-controller/

spi_midi_wx11.txt

require 'drb/drb'
DRB_URI="drbunix:/var/tmp/sonic-pi-midiconnector"
@midi = DRbObject.new_with_uri(DRB_URI)

use_bpm 240

use_synth :dtri
note_node=play 60, release: 100, attack: 1
live_loop :ctl do
  control note_node, amp: @midi.k2/127.0
  sleep 0.19
end