Fixing file locations

README.md

@@ -1,2 +1,29 @@
 # world-o-techno
 Location-based techno with Sonic Pi and gpsd
+
+Getting started:
+
+Check this out into /home/pi
+
+Install gpsd (thanks to http://blog.retep.org/2012/06/18/getting-gps-to-work-on-a-raspberry-pi/) with
+pi@raspberrypi:~$ sudo apt-get install gpsd gpsd-clients python-gps
+and start it with
+pi@raspberrypi:~$ sudo gpsd /dev/ttyUSB0 -F /var/run/gpsd.sock
+
+Check it works with
+pi@raspberrypi:~$ cgps -s
+
+Install sonic-pi-cli to give Sonic Pi a command line (via https://github.com/Widdershin/sonic-pi-cli)
+
+pi@raspberrypi:~$ gem install sonic-pi-cli
+
+Make your pi start Sonic Pi and play our tune on boot (thanks to
+https://rbnrpi.wordpress.com/autoboot-for-telegram-and-sonic-pi-jukebox/)
+
+pi@raspberrypi:~$ sudo vi /etc/xdg/lxsession/LXDE-pi/autostart
+
+and add these lines at the end:
+
+@sonic-pi
+lxterminal --command "/home/pi/world-o-techno/startup.sh"
+

acid2.rb

@@ -1,76 +0,0 @@
-# Welcome to Sonic Pi v2.6
-# Acid
-# Coded by Sam Aaron
-# Hacked around by RJS & JHR
-
-require '/home/pi/gps/gps.rb'
-
-gps = Gps::Receiver.create('gpsd',:host => 'localhost', :port => 2947)
-
-gps.start
-
-sleep 2
-
-puts gps.latitude
-
-
-
-use_debug false
-load_sample :bd_fat
-
-8.times do
-  sample :bd_fat, amp: (line 0, 5, steps: 8).tick
-  sleep 0.5
-end
-
-live_loop :drums do
-  sample :bd_fat, amp: 5
-  sleep 0.5
-end
-
-live_loop :acid do
-  cue :foo
-  4.times do |i|
-    long = (gps.longitude.abs * 10**9) % 100
-    use_random_seed long
-    16.times do
-      use_synth :tb303
-      play chord(:e5, :minor).choose, attack: 0, release: 0.1, cutoff: rrand_i(50, 90) + i * 10
-      sleep 0.125
-    end
-  end
-
-  cue :bar
-  use_synth :tb303
-  32.times do |i|
-    gspeed = gps.speed.modulo(1)
-    puts gspeed
-    play chord(:b4, :minor).choose, attack: 0, release: 0.05, cutoff: rrand_i(70, 98) + i, res: gspeed
-    sleep 0.125
-  end
-
-  cue :baz
-  with_fx :reverb, mix: 0.3 do |r|
-    32.times do |m|
-      control r, mix: 0.3 + (0.5 * (m.to_f / 32.0)) unless m == 0 if m % 8 == 0
-      use_synth :prophet
-      play chord(:e6, :minor).choose, attack: 0, release: 0.08, cutoff: rrand_i(110, 130)
-      sleep 0.125
-    end
-  end
-
-  cue :quux
-  in_thread do
-    use_random_seed 668
-    slat = (gps.latitude.abs * 10**7).modulo(1)
-    with_fx :slicer, mix: 0.75, wave: 3, phase: slat do
-      16.times do
-        use_synth :tb303
-        play chord(:d3, :major).choose, attack: 0, release: 0.1, cutoff: rrand(50, 100)
-        sleep 0.25
-      end
-    end
-  end
-
-  sleep 4
-end

startup.sh

@@ -1,6 +1,13 @@
 #!/bin/bash -x
 
+# wait for sonic-pi to start
 sleep 20
+
+# set the default audio output to be the headphone jack
 amixer cset numid=3 1
+
+# set audio volume to full
 amixer sset PCM 100%
-cat acid2.rb|sonic_pi
+
+# play our tune
+cat /home/pi/world-o-techno/world-o-techno.rb|sonic_pi