🚶🏽 👴🏻 😭 我如何做一个智能水族馆（后端） 👨🏼‍🚒 🙋🏻 👇🏻

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在莫斯科一家成功的大型公司中担任程序员的时候，我从未停止提高自己的编程技能，并在Udemy平台上修了各种课程。

当然，只是看着课程并在作者感到无聊之后再重复一遍，由于当时的无能，有些时刻我不明白。您需要根据课程作者提供的内容进行项目设计-我认为，当然我是对的。只有真正的困难及其解决方案才能为您提供宝贵的经验，这是真正的学习。

web , . Full-stack , , , . JavaScript Express, Appolo GraphQL ( , - REST ), Apollo GQL Vue.

, , , , . , , , " ", "The Facebook", "Instagram" .. , , .

, , , ? ...

, 15 3 . , " , , , ". . "" — , , , .

, . - , . - . .

, " " — 20-50 , "" . , (, , , ), , RGB . , . . . . . . , , .

Arduino. , , .

—

NodeMCU — "" WI-FI (ESP 8266), , Arduino nano wi-fi , .. NodeMCU, .

Arduino IDE ( Windows 10, ), WI-FI. , , . , , Lua( , Micro python, )

, , , C++ Arduino JS Python(). :

init.lua

print ( "Waiting ...")
tmr.register (0, 5000, tmr.ALARM_SINGLE, function (t) tmr.unregister (0); print ( "Starting ..."); dofile ( "main.lua") end)
tmr.start (0)

main.lua

--WiFi Settup
wifi.setmode(wifi.STATION)
local cfg={}
cfg.ssid="wifi_point_name"
cfg.pwd="point_pass"
wifi.sta.config(cfg)
cfg = nil
collectgarbage()

=wifi.ap.getip()

WI-FI , , begin end. esp-8266 , . , Micro python, , lua .

esptool

pip install -g esptool

esptool.py --port COM3 --baud 460800 write_flash --flash_size=detect 0 esp8266-20191220-v1.12.bin

IDE EsPy "" .

, , :

boot.py — , . , Wi-Fi WebREPL;
main.py — , boot.py, .

WebREPL — ssh raspberri, , EsPy esptool, . — WI-FI — .

boot.py

import network
import time

'''    WiFi '''
wlan_id = "my_point"
wlan_pass = "strong_pass"

wlan = network.WLAN(network.STA_IF)
wlan.active(True)

if wlan.isconnected() == False:
    wlan.connect(wlan_id, wlan_pass)
    while wlan.isconnected() == False:
        time.sleep(3)
        print("Connection Fail...")
print('Device IP:', wlan.ifconfig()[0])

main.py , , asyncio, ( ).

main.py

from app import app_start

app_start()

MicroPyServer ( ), - ( ). .

app.py

from micropyserver import MicroPyServer

import ujson

server = MicroPyServer()

def send(self, **kwargs):
        '''
             
        '''
        server.send(
            ujson.dumps(kwargs),
            content_type="Content-Type: application/json",
            #    CORS 
            extra_headers=["Access-Control-Allow-Origin: *"]
        )
        gc.collect()

def healthcheck():
    send(success=1, healthcheck='green')

server.add_route("/healthcheck", healthcheck)

def app_start():
    server.start()

() , , . .

main.py
boot.py
app.py
micropyserver.py

, http://192.168.1.70/ . , http://192.168.1.70/healthcheck, — ,

// Json from chrome browser
{
    "success": 1,
    "healthcheck": "green",
}

hardware ( , LED-, LCD- .. ), , , . , , .

app.py

from heater import Heater

# ...  

class HttpHelper:
    """
          GET 
    """
    def __init__(self):
        pass

    def parse(self, request):
        '''
               
        '''
        lines = request.split("\r\n")

        result = {
            'lines': lines,
            'method': ure.search("^([A-Z]+)", lines[0]).group(1),
            'path': ure.search(
                "^[A-Z]+\\s+(/[-a-zA-Z0-9_.]*)", lines[0]
            ).group(1),
        }

        param_split = ure.sub("\/([a-z]+_?)+?\?", '', lines[0].split(" ")[1])
        result['params'] = self.get_params(param_split.split("&"))

        return result

    def get_params(self, params_as_array):
        '''
               query 
        '''
        params = {}

        for element in params_as_array:
            splited = element.split("=")

            params[splited[0]] = splited[1]

        return params

    def send(self, **kwargs):
        '''
             
        '''
        server.send(
            ujson.dumps(kwargs),
            content_type="Content-Type: application/json",
            extra_headers=["Access-Control-Allow-Origin: *"]
        )
        gc.collect()

# ...  

def get_water_temperature_C(request):
    '''
           
    '''
    try:
        water_heater.get_water_tmp_C()

        http_helper.send(
            success=1,
            water_temperature_c=water_heater.water_tmp
        )

    except Exception as e:
        print(e)
        http_helper.send(success=0, error=e)

# ...  

server.add_route("/healthcheck", healthcheck)
server.add_route("/get_water_tmp", get_water_temperature_C)

# ...

heater.py

import machine
import onewire
import ds18x20

HEATER_PIN = 2

class Heater:
    def __init__(self):
        self.water_tmp = 0.00
        self.heater_pin = machine.Pin(HEATER_PIN)
        self.sensor = ds18x20.DS18X20(onewire.OneWire(self.heater_pin))

    def get_water_tmp_C(self):
        rows = self.sensor.scan()

        self.sensor.convert_temp()

        for rom in rows:
            self.water_tmp = self.sensor.read_temp(rom)

        return self.water_tmp

LED . , . 5 :

32 , (24V) . , , " ", , , . , . -, , 100% . , .

, API.

LCD , IP , ip . frontend , .

IOT , . MicroPyServer, . , , , try except, .

micropyserver.py

# ...  

def _get_request(self):
        """ Return request body """
        #   4096 ,     MemoryError
        return str(self._connect.recv(1024), "utf8")

使照明工作自动化，以便他本人可以检查房间中的照明情况，并营造出日落和黎明以及夜晚月光的效果。
自动化水分析
自动加热水
自动化流量泵
自动进纸器
自动填充

我如何做一个智能水族馆（后端）

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