Very simple thermostat written in Node.js

thermostat.js

const sensor = require('ds1820-temp');
const gpio = require('rpi-gpio');

const CHECK_INTERVAL = 30 * 1000 // every 30s
const GPIO_PORT = 13;
const SENSOR_ID = '0000067bdac4';

setInterval(checkTemperature, CHECK_INTERVAL);

async function checkTemperature() {
    const currentHour = (new Date()).getHours();
    const sensorData = await sensor.readDevice(SENSOR_ID);

    const currentTemperatureCelsius = sensorData.value;
    let targetTemperatureCelsius = 16;

    if (
        (currentHour > 7 && currentHour < 9) ||
        (currentHour > 18 && currentHour < 23)
    ) {
        targetTemperatureCelsius = 22;
    }

    gpio.write(GPIO_PORT, currentTemperatureCelsius < targetTemperatureCelsius);
}