Created
March 6, 2014 14:01
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[wearscript] Neopixel + bluetooth
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<html style="width:100%; height:100%; overflow:hidden"> | |
<body style="width:100%; height:100%; overflow:hidden; margin:0"> | |
<canvas id="canvas" width="640" height="360" style="display:block"></canvas> | |
<script> | |
function NeoPixel(bluetooth) { | |
this.bluetooth = bluetooth; | |
this.buffer = ['arduinoneopixel']; | |
this.concat = function (x) { | |
this.buffer = this.buffer.concat(x); | |
} | |
this.setPixelColor = function (led, r, g, b) { | |
this.concat([255, 0, led, r, g, b]); | |
} | |
this.setBrightness = function (l) { | |
this.concat([255, 1, l, 0, 0, 0]); | |
} | |
this.show = function () { | |
this.concat([255, 2, 0, 0, 0, 0]); | |
} | |
this.delay = function (l) { | |
this.concat([255, 3, l, 0, 0, 0]); | |
} | |
this.startLoop = function () { | |
this.concat([255, 4, 0, 0, 0, 0]); | |
} | |
this.finishLoop = function () { | |
this.concat([255, 5, 0, 0, 0, 0]); | |
} | |
this.send = function () { | |
if (!this.bluetooth) | |
WS.publish.apply(WS, this.buffer); | |
else { | |
var data = this.buffer.slice(1).map(function (x) {return String.fromCharCode(x)}).join(''); | |
WS.bluetoothWrite(this.bluetooth, data); | |
} | |
this.buffer = ['arduinoneopixel']; | |
} | |
} | |
function HSVtoRGB(h, s, v) { | |
var r, g, b, i, f, p, q, t; | |
if (h && s === undefined && v === undefined) { | |
s = h.s, v = h.v, h = h.h; | |
} | |
i = Math.floor(h * 6);h | |
f = h * 6 - i; | |
p = v * (1 - s); | |
q = v * (1 - f * s); | |
t = v * (1 - (1 - f) * s); | |
switch (i % 6) { | |
case 0: r = v, g = t, b = p; break; | |
case 1: r = q, g = v, b = p; break; | |
case 2: r = p, g = v, b = t; break; | |
case 3: r = p, g = q, b = v; break; | |
case 4: r = t, g = p, b = v; break; | |
case 5: r = v, g = p, b = q; break; | |
} | |
return { | |
r: Math.floor(r * 255), | |
g: Math.floor(g * 255), | |
b: Math.floor(b * 255) | |
}; | |
} | |
function change() { | |
// NOTE(brandyn): Set this to undefined if you want to use serial | |
var bluetooth = '00:14:01:21:13:71'; | |
var pixel = new NeoPixel(bluetooth); | |
pixel.setBrightness(BRIGHT); | |
var color = HSVtoRGB(ANGLE / 360, 1, 1); | |
ctx.fillStyle = 'rgb(' + color.r + ',' + color.g + ',' + color.b + ')'; | |
ctx.fillRect(0, 0, 640, 360); | |
offset = Math.round(Math.random() * 256); | |
for (var i = 0; i < 1; i++) { | |
pixel.setPixelColor(i, color.r, color.g, color.b); | |
} | |
pixel.show(); | |
pixel.send(); | |
} | |
function server() { | |
BRIGHT = 100; | |
ANGLE = 0; | |
MODE = false; | |
WS.sensorOn('orientation', .25, function (data) { | |
// Changes canvas color with head rotation | |
ANGLE = data['values'][0]; | |
change(); | |
}); | |
change(); | |
WS.gestureCallback('onGesture', function (name) { | |
if (name == 'SWIPE_LEFT') { | |
BRIGHT = Math.max(0, BRIGHT - 30); | |
WS.say('Bright ' + BRIGHT) | |
} else if (name == 'SWIPE_RIGHT') { | |
BRIGHT = Math.min(100, BRIGHT + 30); | |
WS.say('Bright ' + BRIGHT) | |
} | |
}); | |
} | |
function main() { | |
if (WS.scriptVersion(1)) return; | |
ctx = document.getElementById('canvas').getContext("2d"); | |
WS.serverConnect('{{WSUrl}}', server); | |
} | |
window.onload = main; | |
</script></body></html> |
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#include <Adafruit_NeoPixel.h> | |
#include <SoftwareSerial.h> | |
#define PIN 6 | |
// Parameter 1 = number of pixels in strip | |
// Parameter 2 = pin number (most are valid) | |
// Parameter 3 = pixel type flags, add together as needed: | |
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) | |
// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) | |
// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products) | |
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) | |
Adafruit_NeoPixel strip = Adafruit_NeoPixel(30, PIN, NEO_GRB + NEO_KHZ800); | |
uint8_t *data; | |
uint8_t loop_data[512]; | |
int loop_pos = 0; | |
int loop_state = 0; // 0: no loop, 1: saving loop data, 2: looping | |
int i, j; | |
SoftwareSerial mySerial(3, 2); // RX, TX | |
void setup() { | |
strip.begin(); | |
strip.show(); // Initialize all pixels to 'off' | |
Serial.begin(9600); | |
mySerial.begin(9600); | |
pinMode(13, OUTPUT); | |
} | |
void loop() { | |
data = loop_data + loop_pos; | |
if (Serial.available() < 6 && mySerial.available() < 6) { | |
if (loop_state != 2) | |
return; | |
} else { | |
if (loop_state == 2) { | |
// If data comes in while we loop, clear the loop | |
loop_state = 0; | |
loop_pos = 0; | |
} | |
if (Serial.available()) | |
data[0] = Serial.read(); | |
else | |
data[0] = mySerial.read(); | |
if (data[0] != 255) | |
return; | |
for (i = 0; i < 5; i++) { | |
if (Serial.available()) | |
data[i] = Serial.read(); | |
else | |
data[i] = mySerial.read(); | |
} | |
} | |
if (loop_state != 0) | |
loop_pos += 5; | |
switch (data[0]) { | |
case 0: | |
strip.setPixelColor(data[1], data[2], data[3], data[4]); | |
break; | |
case 1: | |
strip.setBrightness(data[1]); | |
break; | |
case 2: | |
strip.show(); | |
break; | |
case 3: | |
delay(data[1]); | |
break; | |
case 4: // start loop | |
loop_state = 1; | |
loop_pos = 0; | |
break; | |
case 5: // finish loop | |
loop_state = 2; | |
loop_pos = 0; | |
break; | |
} | |
} |
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