Zhihuijia - full furniture function

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Materials and wiring

MR Development board

1.54LCD The screen

Welcome home to connect

Ultrasonic ranging

Tricolor RGB

Development board	Ultrasonic ranging
trig	A6
echo	A4
5v	VCC
GND	GND

Development board	RGB
GND	GND
B	C0

Fire alarm

Flame sensor module

Active buzzer

Wiring instructions

Development board	Flame sensor
DO	B1
5v	VCC
GND	GND

Development board	Buzzer
DO	B0
5v	VCC
GND	GND

Out of office index reminder

PM2.5 5003 G5

PM2.5 Adapter plate
Cough , It is more convenient to use the adapter board .

Tricolor RGB

connection

Development board	PM2.5
A3(RX)	TX
5v	VCC
GND	GND

Development board	RGB
GND	GND
R	C7
G	C6

Smart lights + Intimate curtain

Photoresistor sensor

8MM Luminescence LED modular

12V DC motor

connection

Development board	Photosensitive resistor
5V	VCC
GND	GND
A0	DO

Development board	8MMLED
5V	VCC
GND	GND
A1	OUT

Pin	explain
C8	Only for high level , The motor will turn
B8	PWM control A The motor
B12	A0 # This time I used A The motor , It can be debugged on demand .
B13	A1
B9	PWM control B The motor
B14	B0
B15	B1

The sample program

from pyb import UART,Pin,delay,Timer
import time
from HCSR04 import HCSR04
from machine import Pin
import lcd
#  The screen 
lcd = lcd.LCD()
#PM2.5
u2 = UART(2, baudrate=9600,bits=8, parity=None, stop=1,  timeout=100) # Initialize serial port 
# 3 color   Red and green  +PM2.5  Blue + ultrasonic 
p_Rout = Pin("C7",Pin.OUT_PP)  #  Red 
p_Gout = Pin("C6",Pin.OUT_PP)  #  green 
p_Bout = Pin("C0",Pin.OUT_PP)  #  Blue 
#  flame 
fire=Pin('B1',Pin.IN) 
#  Buzzer 
beep=Pin('B0',Pin.OUT_PP)
# —————— The motor ——————
cs = Pin('C8',Pin.OUT_PP)    #C8 Set the output pin to output high level 
cs(1)
ch1 =None  
ch2 =None
trig = Pin("A6",Pin.OUT)
echo = Pin("A4",Pin.IN)
HC=HCSR04(trig,echo)
#A Motor forward and reverse  s---
p2 = Pin('B8')
tim2 = Timer(10, freq=120)
ch2 = tim2.channel(1, Timer.PWM, pin=p2)
A0 = Pin('B12',Pin.OUT_PP)
A1 = Pin('B13',Pin.OUT_PP)
def z(speed):  # Positive rotation 
	ch2.pulse_width_percent(speed)
	A0(1)
	A1(0)
def f(speed):    # reverse 
	ch2.pulse_width_percent(speed)
	A0(0)
	A1(1)
#—————— The motor  end
# photosensitive 
Do = Pin("A0",Pin.IN)  
# 8MM  Linear lightening  
p1 = Pin('A1')             
tim1 = Timer(2, freq=100)
ch1 = tim1.channel(2, Timer.PWM, pin=p1)

while True:    
	time.sleep(1) 
	# ----PM2.5----- 
	if u2.any():        
		upp=u2.read()   #  Reading is enough  
		PM2_5= upp[6]*256+upp[7]      # 6,7 Bit calculation pm2.5 
		PM10 = upp[8]*256+upp[9]      # 8,9 Bit calculation PM10
		#print("PM2.5 by :",int(PM2_5),"um") # The unit is   MCG / Cubic meters 
		#print("PM10 by :",int(PM10),"um") # The unit is   MCG / Cubic meters 
		if PM2_5 >= 50:        # PM2.5 by 80um Above, the red light will be on   Don't go out ！
			p_Rout(1)
			p_Gout(0)
			p_Bout(0)
		else:
			p_Rout(0)
			p_Gout(1)
			p_Bout(0)
	# ---—  ultrasonic -----
	Distance = HC.getDm() # Measuring distance 
	print(Distance)
	if Distance <10:
		p_Rout(0)
		p_Gout(0)
		p_Bout(1)
	else:
		p_Bout(0)
	#  Screen display PM2.5
	lcd.chars('PM2_5:'+str(PM2_5)+" ",40, 90)# Space to prevent exceeding the display limit 
	#  Light sense  +  The motor +  Light emitting module 
	if Do.value()==0:    #yougguang
			ch1.pulse_width_percent(0)  #  The light is not bright 
			f(30)            #  The motor reverses   Here the status should be judged   I didn't write , Pay attention to the 
	else:
		for i in range(100):
			ch1.pulse_width_percent(i)  # The light is linear 
			delay(50)
		z(10)                       #  The motor is turning forward （ Close the curtains ）
	#  Fire alarm 
	if fire.value()==1:
		beep(1) # High level trigger , Detect the flame , Call the police 
	else:
		beep(0)
	from pyb import Pin,delay

fire=Pin('B0',Pin.IN) 
beep=Pin('B1',Pin.OUT_PP)

while True:
	delay(1000)
	print(fire.value())

	if fire.value()==1:
		beep(1) # High level trigger , Detect the flame , Call the police 
	else:
		beep(0)

Please download the full code by yourself ： Basic functions of smart home competition