Monitoring all aspects of our lives, video surveillance, environmental monitoring, heart rate monitoring, etc., monitoring our lives, organizing design materials in the circuit city, including temperature and humidity monitoring, PM2.5 monitoring, video Monitor, etc., learn together.
1, ESP32-CAM high-cost temperature and humidity monitoring system (schematic + source + tutorial)
In the previous item: ESP32-CAM, ESP8266, WiFi, Bluetooth, MCU, hotspot creation embedded DNS server (sister articles) detail the application of embedded server LAN DNS, the server home page can only query ESP32-CAM The status of the onboard LED lamp and the opening and closing of the LED light, but there is no query environment parameter function, and does not really reflect the essence of the networked technology.
In this period of this issue, the last function is retained, and the DHT11 temperature and humidity sensor module will be added. This module has only one data interface DATA, so only one GPIO14 of the ESP32-CAM, so it is easy to put the previous phase The project is transformed into a temperature and humidity monitoring system. The system's function is to enter in the window of the form: Data then click the CMD button Submit command, the ESP32 server will query the temperature and humidity data to return to the server home page, the user can query the environmental parameters, displayed in the feedback information, the previous phase Buyers can go see the previous introduction.
https://www.cirmall.com/circuit/19388
2. Design of DC voltage current monitoring system based on STM32 single-chip microcomputer - (Source + Circuit Figure + Paper)
This design is composed of STM32 single-chip core board circuit + ACS712 current detection module + power circuit +1602 liquid crystal + potentiometer circuit + power circuit circuit.
1. Display the detected DC voltage value, DC value, and power value by 1602 liquid crystal display.
2. The voltage adjustment bit 0-5V will be input to the input power supply (5V) by the potentiometer.
3. The voltage dividing circuit has an RC filter circuit. Increase jumper cap, selective use filter circuit
https://www.cirmall.com/circuit/19608
3. Intelligent livestock farming monitoring system based on 51 single-chip microcomputer - DHT11-WiFi- (circuit diagram + program source code)
This design is composed of STC89C52 single-chip circuit + WiFi module + DHT11 temperature and humidity sensor circuit + fan control circuit + photosensitive resistance photographic circuit + AD_PCF8591 analog-to-digital conversion circuit + relay circuit.
1. Displays the current temperature, humidity, and light intensity (light intensity divided into 0-5) via the app real-time.
2, can control the opening of the fan through the mobile app.
3. Control the opening of the 2-way relay via the mobile phone app.
https://www.cirmall.com/circuit/20014
4. Design of air quality monitoring system based on STM32 - monitoring PM2.5, temperature and humidity, altitude, air pressure (full set of information)
Function introduction:
1. This design can monitor the temperature, humidity, air pressure, altitude and PM2.5 concentration of the current environment in real time;
2. Set there is 4 buttons, one is the switch interface key, the two is the setup key, three is add a button, four is a reduced key;
3. LCD1602 LCD screen has three interfaces, the first interface current temperature value and humidity value, the second interface displays the current air pressure value and the altitude height, the third interface is the current measured PM2.5 concentration value.
4. Use the Sharp's GP2Y1010AUOF dust sensor to detect the PM2.5 value in the air in real time and display it through 1602, and the detection is more accurate.
5. When the dust concentration value is higher than the set value, the buzzer will sound an audible alarm.
Https://www.cirmall.com/circuit/19771
5. Based on STM32 Home Environmental Monitoring System (OLED, Smoke, Temperature and Humidity, GSM Alarm, Motor Drive)
This design name is called STM32-based home environment alarm system, the main functions are as follows:
1. Through the OLED display, display temperature, humidity, gas concentration value
2. Temperature and humidity, gas, someone invaded the buzzer alarm, and send SMS to notify the user.
3. Button Control Intrusion Alarm Switch
4. There is a L298N motor drive circuit
5. Smoke sensor, motor drive, buzzer does not use modules, is the schematic of its own design
https://www.cirmall.com/circuit/19817
6, graduation design - design based on radio frequency identification parking lot intelligent monitoring system
Main implementation:
1. When there is a parking, the label is read from the opportunity, and the label is sent to the terminal to the terminal, and "Welcome Park" is displayed in the terminal and the label number is displayed.
2. When the owner is swiping the terminal, the parking seat of the vehicle is displayed.
3. When a non-car vehicle, the credit card will display "This car is not in this garage."
https://www.cirmall.com/circuit/771
7, STM32 single-chip smart home WiFi remote monitoring system / Android mobile phone APP control / environment detection (circuit diagram + source + tutorial)
STM32 Internet of Things / WiFi Smart Home System / INDUS Design / SMB Design
1. This design mainly detects temperature and humidity, air pressure, carbon monoxide, air quality in the environment, smoke concentration and light intensity!
2. Display the measured value on the screen, the newspaper cloud platform can view the current state through the mobile app in real time!
3. This design detects the light intensity by the photosensitive sensor. When the light intensity is less than the threshold, it indicates that it is dark, automatically lights the LED lighting and automatically shuts down the curtain!
Converse! Will turn off the light! Open the curtain, you can realize manual opening.
4. You can adjust the system threshold by the key to adjust the system threshold, and the system threshold can be saved.
https://www.cirmall.com/circuit/18476
8. Zigbee greenhouse greenhouse surveillance system based on 51 single-chip microcomputer (including schematic + source code + design data)
Hardware consisting: 51 single-chip + buzzer + ZigBee module + DHT11 temperature and humidity sensor + button + fan, etc .;
Function:
1. The system is mainly divided into host and slave, the slave is responsible for acquiring data, sent to the host; the host displays the data sent by the slave, and judges that there is a alarm or open the fan;
2. The slave settings have 3 sets of settings, from left to right, set key, plus 1 button, reduce 1 button;
3. When the setting button is not pressed, add 1 button to switch the current interface, turn on the data of the temperature and humidity 1, and the data is switched;
When the setting key is pressed, enter the temperature threshold setting mode, plus 1 button, threshold plus one; reduced one button, the threshold is reduced; the threshold range is: 0-255; then press, enter the humidity threshold setting mode ;
4. Many slaves can be mounted under the zigbee system;
https://www.cirmall.com/circuit/16734
9. Hi3518EV200 implemented two-dimensional code scan or video surveillance function design
The circuit is mature product, which is already in use. The circuit is divided into two plates Sensor boards and communication interface boards. The Sensor board has an OV9732 image sensor, WiFi chip RTL8188ETV and main chip Hi3518EV200. There is a GPRS module, RS232, and RS485 chips and buzzers, etc. on the communication interface board. The two boards are previously connected via the FPC line.
https://www.cirmall.com/circuit/16152
10. Brewing industry monitoring system based on STM32 + ZigBee
Based on STM32 + Zigbee brewing monitoring system, 1 host machine and 2 control terminals. The upper machine consists of HMI serial screen (Amoy TJC4827T043_011) + Zigbee (Zhuowan Technology ZA2530A V1.53), the lower machine by STM32F103C8T6 + ZigBee (Zhuo Wanke Za2530A V1.53) + function module (temperature and humidity sensor, relay, PH sensor ..)
The entire system can realize the various sensor data acquisitions of the two terminals, and display on the HMI serial screen, the person can control the relay on the touch button on the HMI serial screen, the brand HMI serial screen integrates an ARM7 chip, development interaction The interface is very simple (officially providing design software), suitable for people who are not good at computer hosting machine design, ZigBee module is a serial port transparent module, directly transmitted by serial port, and purchase the factory directly to predeterminate the relationship between the concentrator and several terminals ( You need to note the customer service note), you don't have to familiarize yourself with the ZigBee complex protocol stack, as long as the STM32 is programmed.
The entire system has been able to achieve data acquisition and control. There is no problem in actual use, or you can modify other functions, and it is also suitable for demos for design and product models.
https://www.cirmall.com/circuit/12481
11. Based on ARM, Linux, Intelligent Garage Management Monitoring Belief System
The smart garage system workflow is as follows: When there is a door display, the vehicle comes in, the card is tailed into the garage through the RFID card, and the monitoring device (camera) placed at the door will immediately capture, the picture obtained by the capture (image processing) ) Get the vehicle information, record the vehicle information, the idle parking space will be on, to know the specific orientation of the parking, after the vehicle is parked, the terminal updates the screen information to start timing billion; if there is a car, the car The camera also captures, the image processing gets the vehicle information, thereby updating the screen information, and finally the parking fee is calculated after a RFID card.
https://www.cirmall.com/circuit/12460
12. Intelligent monitoring based on STM32 (OV7670)
With the mobile app with the Internet, you can receive the image of the intelligent monitoring upload. (The IP address and port number of the available servers are provided in the source code. For details, please see Esp8266.h)
Function:
1. Remote control shooting pictures
2.WIFI disconnected automatic reconnection
3.TCP connection is disconnected
4. Each fault has a corresponding indicator light on the prompt error type (such as: OV7670 initialization error red light)
Https://www.cirmall.com/circuit/11930
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