lm35.js

const ambient    = require('ambient-lib');
const SerialPort = require('serialport');
const port       = new SerialPort('/dev/cuaU0');
const Readline   = require('@serialport/parser-readline');
const parser     = new Readline();

port.pipe(parser);
ambient.connect(00000,'xxxxxxxxxxxxxxxx');

parser.on('data', line => {
    ambient.send({d1: line}, (err, res, body) => {
        if (err) { console.log(err); }
        console.log(res.statusCode);
    });
});