書いたコードが
現実を動かす

const servo = obniz.wired("ServoMotor", {
  gnd: 0, vcc: 1, signal: 2
});

await servo.angle(90);

const sensor = obniz.wired("SHT31", {
  sda: 0, scl: 1, vcc: 2, gnd: 3
});

const temp = await sensor.getTempWait();
console.log(temp + "°C");

<script src="https://unpkg.com/obniz"></script>
<button id="on">点灯</button>
<script>
  const obniz = new Obniz("OBNIZ_ID");
  obniz.onconnect = async () => {
    on.onclick = () => obniz.io0.output(true);
  };
</script>

import Obniz from "obniz";
import { Client } from "pg";

const obniz = new Obniz("OBNIZ_ID");
const db = new Client(); await db.connect();

obniz.onconnect = async () => {
  const t = await obniz.wired("SHT31").getTempWait();
  await db.query("INSERT INTO temps(v) VALUES($1)", [t]);
  obniz.sleepMinute(1); // 1 分スリープ → 起床して再接続 → onconnect 再実行
};