人を検知して音楽を再生させたい
今回は、Arduino+赤外線センサーからシリアルとMaxに送信し、
センサーで動くものを検知したら音楽を再生し、人がいなくなってしばらく経過したら、
音楽を止めるというMaxスケッチを作ったのでメモしておく。
用意するもの
- Max
- Arduino UNO
- 赤外線センサー
- ケーブル３本
- ブレッドボード
配線
真ん中が信号線なので、Arduinoのデジタル２番PINに接続(緑色の線)。
あとは、5V(赤色)とGRD(黒色)を接続する。接続はシンプルですね。
※こちらの赤外線センサー、ブレッドボードに真っ直ぐ刺さらなかったので、ペンチで無理やり曲げました。
Arduino
2番ピンにモーションセンサーからの情報が0 - 1でやってくる。
赤外線センサーの信号が来てる時は、13番ピンでLEDが点灯するようにした。
int motionPin = 2;
int motionStatas;
void setup() {
Serial.begin(9600);
pinMode(13, OUTPUT);
}
void loop() {
String message = "";
motionStatas = digitalRead(motionPin);
if (motionStatas == 1){
message = "status 1";
digitalWrite(13, HIGH);
} else {
message = "status 0";
digitalWrite(13, LOW);
}
Serial.println(message);
delay (200);
}
Max
シリアルを受け取れるようにして、ステータスに応じて、トグルスイッチを再生モードとスタンバイモードにするようにした。最後の検出からの経過時間に応じて、スタンバイモードになるように時間設定できるようにした。
以下をコピーして、Max画面に貼り付けると、今回のスケッチが再現されるはずです。
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"maxclass" : "message",
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, {
"patchline" : {
"source" : [ "obj-16", 0 ],
"destination" : [ "obj-17", 0 ]
}
}
, {
"patchline" : {
"source" : [ "obj-17", 0 ],
"destination" : [ "obj-10", 0 ]
}
}
, {
"patchline" : {
"source" : [ "obj-10", 0 ],
"destination" : [ "obj-1", 0 ],
"order" : 1
}
}
, {
"patchline" : {
"source" : [ "obj-2", 0 ],
"destination" : [ "obj-1", 0 ]
}
}
, {
"patchline" : {
"source" : [ "obj-4", 0 ],
"destination" : [ "obj-5", 0 ]
}
}
, {
"patchline" : {
"source" : [ "obj-5", 0 ],
"destination" : [ "obj-6", 0 ]
}
}
],
"appversion" : {
"major" : 8,
"minor" : 2,
"revision" : 2,
"architecture" : "x64",
"modernui" : 1
}
,
"classnamespace" : "box"
}
まとめ
赤外線センサーで人を感知して、メディアを再生するというのは、
結構汎用的なので、今後、展示やパフォーマンスとかでも何かに役立ちそうな気がします。