/
riff.pde
198 lines (178 loc) · 5.46 KB
/
riff.pde
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/*
* The RIFF (Randomly Influenced Finger Flute) for Arduino - SuperAwesome Version
* by TechNinja and SuperAwesomeSylvia - First release: September 2010
*
* Part of Sylvia's Super Awesome Maker Show! - Episode 3
* http://tn42.com/maker-show
* http://tn42.com/riff
*
* Fork this on GitHub:
* http://github.com/techninja/riff-superawesome
*
* --------------------------------------------------------------
* = Licensed under the CC-GNU GPL version 2.0 or later =
* = http://creativecommons.org/licenses/GPL/2.0/ =
* --------------------------------------------------------------
*
* Plays tones at a given interval, from a given list of notes based
* on the value of an analog input, intentionally not connected to anything
* so that random fluctuations in it's value can be influenced by physically
* touching the various pins on the underside of the Arduino.
*
* Things needed to build it:
* - Arduino (duh!)
* - Speaker
* - A dashing sense of musical adventure
*
* Build steps:
* - Hook one of the speaker wires to ground, and the other to pin 10
* - Upload this sketch
* - Touch the Analog pin 0, and with your other fingers, touch ground, or 5v
* - Enjoy your own little symphony of random sound!
*
*
* References:
* http://arduino.cc/en/Tutorial/AnalogInput
* http://arduino.cc/en/Tutorial/Tone3
* http://code.google.com/p/tinkerit/wiki/Auduino
*/
/*************************************************
* Note Constant Table (by by Brett Hagman via http://arduino.cc/en/Tutorial/Tone3 )
*************************************************/
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978
// Handy reminder for the number of steps from analogRead (0 to 1023)
#define analog_read_number_of_steps 1024
/******* -----=====!! EASY STUFF TO MESS WITH !!=====------ ******/
// Array of notes to be played, in order, taken from the defined notes above.
int notes[] = {NOTE_C3,
NOTE_D3,
NOTE_E3,
NOTE_F3,
NOTE_G3,
NOTE_A3,
NOTE_B3,
NOTE_C4,
NOTE_D4,
NOTE_E4,
NOTE_F4,
NOTE_G4,
NOTE_A4,
NOTE_B4,
NOTE_C5,
NOTE_D5};
// ^^ Two octaves of the C Major scale, starting at middle C ^^
// How many notes do we have in the array to play?
// (Make sure this is the same number of notes that you have above)
int number_of_notes = 16; // Two octaves (16)
// Which digital I/O pin is the speaker hooked up to?
int speaker_pin = 10;
// How long should each note play before reading for a new one (in milliseconds)?
int note_duration = 200; // 200ms = 5 notes per second (if constantly changing)
// Which analog pin should we read for the value?
int analog_read_pin = 0;
/******* -----=====^^ EASY STUFF TO MESS WITH ^^=====------ ******/
// Divide the number of analog read steps (1024) by the number of notes in the list (16).
// We do this calculation here to save processing time within the main loop.
int analog_steps_per_note = (analog_read_number_of_steps / number_of_notes);
// Initialize the number to hold our note index.. isn't used till we get to the main loop
int note_index = 0;
void setup() {
// Code to run at startup.. none yet.
}
void loop() {
// Read the wobbly value from the analog_read_pin
// then divide it by the number of steps per note to get a number from 0 to 15
note_index = analogRead(analog_read_pin) / analog_steps_per_note;
// Play the note from the given note_index
tone(speaker_pin, notes[note_index]);
// Delay for the note duration
delay(note_duration);
}