More than 1 year has passed since last update.

愛犬のご飯は困らせない！自動給餌マシンを作る！

Last updated at 2023-11-03Posted at 2023-11-03

コーギーをお迎えするために！

前回に引き続きコーギーと暮らす事を夢見て今日を生きる毎日。
ただ、システムエンジニアという仕事はピークがまちまちであり、こんな状態ではコーギーがさみしい思いをしていないか？ひもじい思いをしていないか？などと考えてしまい仕事が手につかなくなります（妄想ですけど）。

そんなタイミングで学んだのがIoTの技術！
これを使えば遠隔で愛犬の見守りと給餌を行う仕組みが作れるのではないか！？
と考えて自動給餌マシンを作ってみる事にしました！

自動給餌マシン完成品

さっそくですが完成品はこちら！！
ありもので作ったためマシンと呼ぶには手作り感がすごいですが、やりたい事は実現できました！
おまけで食欲を掻き立てるご飯が炊けた時の音も入れております！

（妄想の）愛犬のため、ありもので自動給餌マシーン？を工作しました！！ピタゴラスイッチかな？
これでいつ我が家にコーギーがきてもご飯の準備はOKだよー！！#protoout #obniz #犬好きさんと繋がりたい #犬のいる幸せ #エンジニアと繋がりたい #駆け出しエンジニアと繋がりたい pic.twitter.com/96uMm35pMh
— oooookawa (@ooooooooookawa) November 3, 2023

環境準備

今回使用した環境・モノは以下の通りです。

【環境】
・Node-RED（codespaces）
・LINE BOT（Messaging API）
・obnizノード

【モノ】
・obniz Board 1Y（上段左）
・サーボモータ（上段右）
・超音波距離センサ（下段左）
・ブレッドボード（下段中央）
・スピーカー（下段右）

実装開始

Node-REDフロー図

Node-REDのフローと書き出したJSONは以下の通りとなります。

■Node-REDフロー図

JSON

[{"id":"9db103df230548a6","type":"obniz-function","z":"8aa492ba5d2e627a","obniz":"37ad24e55808fdb7","name":"","code":"msg.payload = await obnizParts.hcsr04.measureWait();\nreturn msg;","x":360,"y":260,"wires":[["83931ede40576aa3"]]},{"id":"83931ede40576aa3","type":"switch","z":"8aa492ba5d2e627a","name":"","property":"payload","propertyType":"msg","rules":[{"t":"lt","v":"200","vt":"str"},{"t":"else"}],"checkall":"true","repair":false,"outputs":2,"x":530,"y":260,"wires":[["94fc581fcc0c6506"],["fb9d4bfeaea7d2f7"]]},{"id":"fb9d4bfeaea7d2f7","type":"template","z":"8aa492ba5d2e627a","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"近くにいないよ・・・","output":"str","x":720,"y":300,"wires":[["4630479f668841c5"]]},{"id":"94fc581fcc0c6506","type":"template","z":"8aa492ba5d2e627a","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"近くにいるよー！！","output":"str","x":720,"y":240,"wires":[["4630479f668841c5"]]},{"id":"91f55b030f15768b","type":"Webhook","z":"8aa492ba5d2e627a","name":"","url":"/webhook","x":100,"y":260,"wires":[["7d31739e4f75063a"]]},{"id":"7d31739e4f75063a","type":"switch","z":"8aa492ba5d2e627a","name":"","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"確認","vt":"str"},{"t":"eq","v":"ご飯","vt":"str"},{"t":"eq","v":"ごちそうさま","vt":"str"},{"t":"else"}],"checkall":"true","repair":false,"outputs":4,"x":130,"y":340,"wires":[["9db103df230548a6"],["dcf2ba70584d8069"],["dcf2ba70584d8069"],["ee9339579f87686b"]]},{"id":"dcf2ba70584d8069","type":"obniz-function","z":"8aa492ba5d2e627a","obniz":"37ad24e55808fdb7","name":"","code":"let degrees = context.get('degrees') || 90; \r\ncontext.set('degrees', degrees);\r\n\r\n//音用のスリープ時間定義\r\nconst sleep = (msec) => new Promise(res => setTimeout(res, msec));\r\n\r\nif (msg.payload === 'ご飯') {\r\n    // ご飯なら音を鳴らしてサーボモーター起動\r\n    degrees = 90.0;\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ド↓\r\n    obnizParts.Speaker.play(1046.5); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(500); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(00);\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // ファ↓\r\n    obnizParts.Speaker.play(698.45); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // ミ↓\r\n    obnizParts.Speaker.play(659.25); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // レ↓\r\n    obnizParts.Speaker.play(587.34); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // ミ↓\r\n    obnizParts.Speaker.play(659.25); await sleep(300); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ド↓\r\n    obnizParts.Speaker.play(523.23); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ド↓\r\n    obnizParts.Speaker.play(1046.5); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(500); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n    // ラ↓\r\n    obnizParts.Speaker.play(879.99); await sleep(400); obnizParts.Speaker.stop(); await sleep(100);\r\n\r\n    // ソ↓\r\n    obnizParts.Speaker.play(783.98); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // ファ↓\r\n    obnizParts.Speaker.play(698.45); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // ミ↓\r\n    obnizParts.Speaker.play(659.25); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // レ↓\r\n    obnizParts.Speaker.play(587.34); await sleep(200); obnizParts.Speaker.stop(); await sleep(50);\r\n    // ド↓\r\n    obnizParts.Speaker.play(523.23); await sleep(400); obnizParts.Speaker.stop(); await sleep(200);\r\n\r\n    \r\n} else {\r\n    // 終わりのメッセージならサーボモーターで蓋をする\r\n    degrees = 0.90;\r\n}\r\n\r\n// サーボを指定の角度まで動かす\r\nobnizParts.servo.angle(degrees);","x":338.99996185302734,"y":359.99997901916504,"wires":[[]]},{"id":"4630479f668841c5","type":"ReplyMessage","z":"8aa492ba5d2e627a","name":"","replyMessage":"","x":718.9999618530273,"y":419.99997901916504,"wires":[]},{"id":"ee9339579f87686b","type":"template","z":"8aa492ba5d2e627a","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"メニューからコーギーかご飯を選んでね！","output":"str","x":338.99996185302734,"y":419.99997901916504,"wires":[["4630479f668841c5"]]},{"id":"c7b24568b7a00d01","type":"comment","z":"8aa492ba5d2e627a","name":"超音波距離センサー","info":"","x":328.99996185302734,"y":219.99997901916504,"wires":[]},{"id":"8e44c19d11e26923","type":"comment","z":"8aa492ba5d2e627a","name":"スピーカー + サーボモータ","info":"","x":348.99996185302734,"y":319.99997901916504,"wires":[]},{"id":"37ad24e55808fdb7","type":"obniz","obnizId":"XXXX-XXXX","deviceType":"obnizboard","name":"","accessToken":"","code":"obniz.display.clear(); // 画面を消去\r\n\r\nobnizParts.hcsr04 = obniz.wired(\"HC-SR04\",{ gnd:0, echo:1, trigger:2, vcc:3 });\r\nobnizParts.Speaker = obniz.wired(\"Speaker\",{ signal:6, gnd:7 });\r\nobnizParts.servo = obniz.wired(\"ServoMotor\", { gnd: 9, vcc: 10, signal: 11 });"}]