🏠 Keyestudio Smart Home with Python: switch the light, open the door, read the sensors · Keyestudio Smart Home ด้วย Python: เปิดไฟ เปิดประตู อ่านค่าเซนเซอร์ · 用 Python 控制 Keyestudio 智能小屋：开灯、开门、读取传感器

1 Put MicroPython on the board · ใส่ MicroPython ลงบนบอร์ด · 把 MicroPython 装到开发板上

python -m pip install esptool mpremote

python -m mpremote devs

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python -m esptool erase-flash
python -m esptool --baud 460800 write-flash 0x1000 firmware.bin

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python -m mpremote exec "print('hello from the house')"

2 led.py: switch the light · led.py: เปิดปิดไฟ · led.py：开灯和关灯

led.py

import time

from machine import Pin

# The yellow light of the house is on pin 12.
led = Pin(12, Pin.OUT)

for count in range(3):
    led.value(1)
    print("light on")
    time.sleep(1)
    led.value(0)
    print("light off")
    time.sleep(1)

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python -m mpremote run led.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

light on
light off
light on
light off
light on
light off

3 sensors.py: read the house · sensors.py: อ่านค่าจากบ้าน · sensors.py：读取小屋的数据

sensors.py

import dht
from machine import Pin

# A button reads 1 when nobody touches it, and 0 while it is pressed.
left_button = Pin(16, Pin.IN, Pin.PULL_UP)
right_button = Pin(27, Pin.IN, Pin.PULL_UP)
# The motion sensor reads 1 when somebody moves in front of it.
motion = Pin(14, Pin.IN)
# One part measures both the temperature and the humidity.
climate = dht.DHT11(Pin(17))

climate.measure()
print("left button:", left_button.value())
print("right button:", right_button.value())
print("motion:", motion.value())
print("temperature:", climate.temperature(), "C")
print("humidity:", climate.humidity(), "%")

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python -m mpremote run sensors.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

left button: 1
right button: 1
motion: 1
temperature: 31 C
humidity: 62 %

4 door.py: open the door · door.py: เปิดประตู · door.py：打开门

door.py

import time

from machine import Pin, PWM

DOOR_CLOSED = 25    # the duty that turns the motor to 0 degrees
DOOR_OPEN = 128     # the duty that turns the motor to 180 degrees

# The motor of the door is on pin 13. It wants 50 pulses a second.
door = PWM(Pin(13))
door.freq(50)

door.duty(DOOR_OPEN)
print("door open")
time.sleep(2)
door.duty(DOOR_CLOSED)
print("door closed")

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python -m mpremote run door.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

door open
door closed

5 wifi.py: the house joins your Wi-Fi · wifi.py: บ้านเชื่อมต่อ Wi-Fi ของคุณ · wifi.py：小屋连上你的 Wi-Fi

wifi.py

import time

import network

WIFI_NAME = "your-wifi-name"
WIFI_PASSWORD = "your-wifi-password"

wifi = network.WLAN(network.STA_IF)
wifi.active(True)
wifi.connect(WIFI_NAME, WIFI_PASSWORD)
while not wifi.isconnected():
    time.sleep(0.5)

# ifconfig() gives four addresses. The first one is the address of the house.
print("address:", wifi.ifconfig()[0])

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python -m mpremote run wifi.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

address: 192.168.1.50

6 house.py: the house waits for requests · house.py: บ้านรอรับคำขอ · house.py：小屋等待请求

house.py

import json
import socket
import time

import dht
import network
from machine import Pin, PWM

WIFI_NAME = "your-wifi-name"
WIFI_PASSWORD = "your-wifi-password"
PORT = 8080
DOOR_CLOSED = 25    # the duty that turns the door motor to 0 degrees
DOOR_OPEN = 128     # the duty that turns the door motor to 180 degrees
FAN_SPEED = 700     # 0 is stopped and 1023 is the fastest

led = Pin(12, Pin.OUT)
motion = Pin(14, Pin.IN)
left_button = Pin(16, Pin.IN, Pin.PULL_UP)
right_button = Pin(27, Pin.IN, Pin.PULL_UP)
climate = dht.DHT11(Pin(17))
door = PWM(Pin(13))
door.freq(50)
# The fan motor has two wires. It turns when only one of them has power.
fan_a = PWM(Pin(19), 10000)
fan_b = PWM(Pin(18), 10000)


def join_wifi():
    wifi = network.WLAN(network.STA_IF)
    wifi.active(True)
    wifi.connect(WIFI_NAME, WIFI_PASSWORD)
    while not wifi.isconnected():
        time.sleep(0.5)
    return wifi.ifconfig()[0]


def read_house():
    climate.measure()
    return {
        "temperature": climate.temperature(),
        "humidity": climate.humidity(),
        "motion": motion.value(),
        "left_button": left_button.value(),
        "right_button": right_button.value(),
        "light": led.value(),
    }


def do(path):
    if path == "/read":
        return read_house()
    if path == "/light/on":
        led.value(1)
    elif path == "/light/off":
        led.value(0)
    elif path == "/door/open":
        door.duty(DOOR_OPEN)
    elif path == "/door/close":
        door.duty(DOOR_CLOSED)
    elif path == "/fan/on":
        fan_a.duty(0)
        fan_b.duty(FAN_SPEED)
    elif path == "/fan/off":
        fan_a.duty(0)
        fan_b.duty(0)
    else:
        return None
    return {"done": path}


def answer(visitor):
    # A request begins with a line such as "GET /read HTTP/1.1".
    words = visitor.recv(1024).decode().split(" ")
    if len(words) < 2:
        # A browser sometimes connects and sends nothing.
        visitor.close()
        return
    path = words[1]
    print("asked for", path)
    reply = do(path)
    status = "200 OK"
    if reply is None:
        status = "404 Not Found"
        reply = {"error": "the house does not know " + path}
    head = "HTTP/1.0 " + status + "\r\nContent-Type: application/json\r\n\r\n"
    visitor.send((head + json.dumps(reply)).encode())
    visitor.close()


print("address:", join_wifi())
door.duty(DOOR_CLOSED)

listener = socket.socket()
# Without this line, a second start soon after the first can fail.
listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listener.bind(socket.getaddrinfo("0.0.0.0", PORT)[0][-1])
listener.listen(1)
print("the house is listening on port", PORT)

while True:
    visitor, visitor_address = listener.accept()
    answer(visitor)

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python -m mpremote run house.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

address: 192.168.1.50
the house is listening on port 8080
asked for /light/on
asked for /read
asked for /light/off
asked for /read
asked for /fan/on
asked for /light/on
asked for /door/open
asked for /garden

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curl -i http://192.168.1.50:8080/garden

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

HTTP/1.0 404 Not Found
Content-Type: application/json

{"error": "the house does not know /garden"}

7 ask_house.py: ask it from your computer · ask_house.py: สั่งบ้านจากคอมพิวเตอร์ของคุณ · ask_house.py：从你的电脑向它提问

ask_house.py

import json
from urllib.request import urlopen

# Write the address that house.py printed in the place of 192.168.1.50.
HOUSE = "http://192.168.1.50:8080"


def ask(path):
    with urlopen(HOUSE + path) as reply:
        return json.load(reply)


print(ask("/light/on"))
print(ask("/read"))
print(ask("/light/off"))

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python ask_house.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

{'done': '/light/on'}
{'temperature': 31, 'humidity': 62, 'motion': 1, 'left_button': 1, 'right_button': 1, 'light': 1}
{'done': '/light/off'}

8 evening.py: let a program decide · evening.py: ให้โปรแกรมตัดสินใจ · evening.py：让程序来决定

evening.py

import json
from urllib.request import urlopen

# Write the address that house.py printed in the place of 192.168.1.50.
HOUSE = "http://192.168.1.50:8080"
HOT = 28    # degrees Celsius


def ask(path):
    with urlopen(HOUSE + path) as reply:
        return json.load(reply)


readings = ask("/read")
print("temperature:", readings["temperature"], "C")
print("motion:", readings["motion"])

if readings["temperature"] >= HOT:
    ask("/fan/on")
    print("It is hot. The fan is on.")
else:
    ask("/fan/off")
    print("It is not hot. The fan is off.")

if readings["motion"] == 1:
    ask("/light/on")
    ask("/door/open")
    print("Somebody is there. The light is on and the door is open.")
else:
    ask("/light/off")
    ask("/door/close")
    print("Nobody is there. The light is off and the door is closed.")

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python evening.py

what it should printสิ่งที่มันควรพิมพ์ออกมา它应该打印的内容 · not run on a kit by us · เราไม่ได้รันบนชุดคิต · 我们没有在套件上运行过

temperature: 31 C
motion: 1
It is hot. The fan is on.
Somebody is there. The light is on and the door is open.

🧭 What to do next · ทำอะไรต่อดี · 接下来做什么