Experiment on automatic watering of Micropython Tpyboard v102

1. System Functions

Monitoring of soil moisture, ambient temperature, light intensity

Automatic watering according to current environment, cold weather automatically heats soil

2. Required Components

Tpyboard Board 1 pieces

Photosensitive Module 1 blocks

Ds18b20 Module 1 block

Soil Moisture Detection Module 1 block

DuPont Line several

Relays 2 x

3. Wiring Method

photosensitive module	Tpyboard v102
VCC	3.3v
gnd	< Span class= "Nodeal" >gnd
a0	y12

soil Soil Moisture Detection Module	tpyboard v102
VCC	3.3v
gnd	gnd
a0	y11
separate two pins are connected to the probe board	 

Ds18b20	Tpyboard v102
Vcc	3.3V
GND	GND
Do	Y10

Relay Module 1 (Control water valve humidification)	Tpyboard v102
Vcc	Vin
GND	GND
Inch	Y9
Com	Vin
NO connection to the electric water valve

Relay Module 2 (Control electric hot Line heating)	Tpyboard v102
Vcc	Vin
GND	GND
Inch	Y8
COM connected to 220V home powered FireWire
NO connection to the plus line one end
Plus the other end connected to the home power 0-wire

After the wiring is complete, main.py, boot.py, ds18x20.py, onewire.py are imported into the Tpyboard v102 drive letter to run. Source code

5. Source Code

From Pyb import Pin, ADC
From ds18x20 import ds18x20

GL = ADC (Pin (' Y12 ')) #300亮-1700 Dark
SD = ADC (Pin (' Y11 ')) #1800干-800 wet
WD = ds18x20 (Pin (' Y10 '))
KS = Pin (' Y9 ', pin.out_pp)
JR = Pin (' Y8 ', pin.out_pp)

While True:
Print (' \ t light intensity: ', gl.read (), ' \ t soil humidity: ', sd.read (), ' \ t current temperature: ', wd.read_temp ())
Pyb.delay (200)
If Gl.read () <=250: #阳光充足
If Sd.read () >800: #多浇水
Ks.value (1)
else:
Ks.value (0)
Elif Gl.read () >=1300: #阳光不足
If Sd.read () >1200: #少浇水
Ks.value (1)
else:
Ks.value (0)
else: #阳光一般
If Sd.read () >1000: #正常浇水
Ks.value (1)
else:
Ks.value (0)
If Wd.read_temp () <18: #温度过低
Jr.value (1)
else:
Jr.value (0)

Experiment on automatic watering of Micropython Tpyboard v102