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#include <PMS.h>

#include "PMS.h"
#include <SoftwareSerial.h>
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display

//SoftwareSerial Serial1(10, 11); // RX, TX

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关于串口（UART）：

1. 波特率表示每秒钟传输多少bit信息，如9600，则一bit约0.1ms，及100微秒左右，可以在示波器中看到
2. 信息格式为0 + 8bit信息 + 奇偶校验位（可选），信息传输顺序为从低位到高位， 10000010 即为 01000001，即16进制的41，10进制的65，即字符A
3. Arduino 只有一个串口Serial，想使用Serial1就要用SoftwareSerial
4. 如果串口（0， 1）接了传感器，有可能会上传代码失败，这是把接的设备去掉即可
5. 操作LCD设备，发现只有LiquidCrystal_I2C这个好用些，如果在循环在某一行中写数据，需要先clear，否则会重影

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光驱位装了个ssd，光驱位是盘位5，而gen8 只能顺序的从1-5来启动，所以做一些设置才可以

1. 安装启动信息到u盘或者sd卡，从这里引导到ssd的启动信息
2. 将盘位5单独配置成一个raid 0，然后就可以设置从这个raid 0启动

参考:

• https://www.admfactory.com/hp-microserver-gen8-boot-from-ssd-install-on-odd-bay/
• https://www.mobibrw.com/?s=gen8

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install ubuntu

https://github.com/rcasero/doc/wiki/Ubuntu-linux-on-Dell-XPS-15-(9560)

fix touchpad problem

https://www.dell.com/support/article/cn/zh/cnbsd1/sln308258/precision-xps-ubuntu-general-touchpad-mouse-issue-fix?lang=en

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const puppeteer = require('puppeteer');
const url = process.argv[2];
//console.log(url);

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto(url, {waitUntil: 'networkidle0'});

	await page.waitFor(1500);

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BGP and ANYCAST

how anycast work. https://www.slashroot.in/what-anycast-and-how-it-works

https://www.incapsula.com/blog/how-anycast-works.html

https://www.cloudflare.com/learning/cdn/glossary/anycast-network/

https://blog.thousandeyes.com/using-anycast-for-internet-services/

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My setup:

• NUC
• AORUS gtx 1070 gaming box

It took me several days to install cuda, I have to reinstall nvidia driver、cuda、even  os serveral times. So I have some tips:

• Read nvidia's cuda installation guide, Do not miss anything
• Do not use the deb version of cude, Just use run file.
• Install nvidia-390 driver first, then install cude by run file, it will ask you to install driver, say NO

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/* Fri 11 Aug 2017 10:20:00 UTC */ ! function e(t, r, n) {
    function a(i, c) {
        if (!r[i]) {
            if (!t[i]) {
                var u = "function" == typeof require && require;
                if (!c && u) return u(i, !0);
                if (o) return o(i, !0);
                var d = new Error("Cannot find module '" + i + "'");
                throw d.code = "MODULE_NOT_FOUND", d
            }

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#!/bin/bash


# if ethernet DOES NOT connected, remove route table
ifconfig en6 | grep 'inet 10.200.' || {
    echo cleanup
    sudo route delete 10.0.0.0/8 10.200.33.1
    networksetup -setdnsservers Wi-Fi 114.114.114.114
    networksetup -setsearchdomains Wi-Fi ''
    exit 0

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awk 'BEGIN{
        split("<10 10-100 100-500 500-100 >1000",b)
    }{
        if($2<10)a[1]++;
        else if($2<100)a[2]++;
        else if($2<500)a[3]++;
        else if($2<1000)a[4]++;
        else a[5]++
    }END{