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Figure 1

Circuit design of DHT11 module
Circuit design of DHT11 module

Figure 2

Schematic diagram of optical intensity module
Schematic diagram of optical intensity module

Figure 3

Circuit diagram of light source module
Circuit diagram of light source module

Figure 4

Light source module circuit diagram
Light source module circuit diagram

Figure 5

Schematic diagram of buzzer alarm module
Schematic diagram of buzzer alarm module

Figure 6

LCD usage flow chart
LCD usage flow chart

Figure 7

Flowchart of program realization of capture
Flowchart of program realization of capture

Figure 8

OV2640 initial configuration flowchart
OV2640 initial configuration flowchart

Figure 9

System physical drawing
System physical drawing

Figure 10

System startup interface
System startup interface

Figure 11

(a) Screen display at 8:00, (b) Upper computer display at 8:00
(a) Screen display at 8:00, (b) Upper computer display at 8:00

Figure 12

(a) Screen display at 13:00; (b) Display of upper computer at 13:00
(a) Screen display at 13:00; (b) Display of upper computer at 13:00

Figure 13

(a) Screen display at 20:00; (b) Upper computer display at 20:00
(a) Screen display at 20:00; (b) Upper computer display at 20:00

Figure 14

The first group of auto-adjusting light source
The first group of auto-adjusting light source

Figure 15

The second group of test pictures of automatic adjusting light source
The second group of test pictures of automatic adjusting light source

Figure 16

The third group of test pictures of automatic adjusting light source
The third group of test pictures of automatic adjusting light source

Figure 17

Capture group 1 (1)
Capture group 1 (1)

Figure 18

Capture group 1 (2)
Capture group 1 (2)

Figure 19

Capture group 1 (3)
Capture group 1 (3)

Figure 20

Capture group 1 (4)
Capture group 1 (4)

Figure 21

Capture group 2 (1)
Capture group 2 (1)

Figure 22

Capture group 2 (2)
Capture group 2 (2)

Figure 23

Capture group 2 (3)
Capture group 2 (3)

Figure 24

Capture group 2 (4)
Capture group 2 (4)

Test results at 8:00

Time Light intensity Temperature Humidity
8:00 67 27°C 41%

STA and TCP client configuration

Instructions Functions
AT+CWMODE=1 Set the WiFi module to STA mode
AT+RST Restart the WiFi module to take effect
AT+CWJAP="xx", "xxxxxxx" Add a WiFi hot spot: xx, the password is xxxxxxxx
AT+CIPMUX=0 Enabling single connection
AT+CIPSTART="TCP","192.168.1.XXX",8000 Establish a TCP connection to 192.168.1.xxx,8000
AT+CIPMODE=1 Enable transparent transmission
AT+CIPSEND Begin to transport

TTest results at 20:00

Time Light intensity Temperature Humidity
20:00 2 26°C 30%

Automatic adjustment of light source

Light intensity values (adcx) Comparing values (ledpwm val)
adcx>50 0
30<adcx⩽50 100
20<adcx⩽30 300
adcx⩽20 500

Test results at 13:00

Time Light intensity Temperature Humidity
13:00 98 28°C 41%
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