VIDEOSUMMARYThe emergence of a large number of household appliances that use electricity leads to the great challenges of managing electricity efficiently. Effective power management will help save energy sources, help managers assess power consumption to offer cost and energy saving options, help monitor power quality. , minimizing the risks when using electricity. Furthermore, large-scale power monitoring can become a valuable data resource that enables computational analysis to improve power system reliability and continuity, and is an important component of power systems. An integral part of the Smart Grid system is being researched by power providers.Realizing the importance of power management and the trend of "IoTization" of all devices, I have researched and built "Intelligent electricity data collection and measurement system". The system is integrated with the function of measuring the current, voltage, and power of electrical equipment in real time, and that data is collected and sent to the phone for analysis and evaluation software. We will know clearly about the power usage of each device, through which appropriate suggestions and recommendations will be given by the software to optimize equipment and power.DESCRIBTION OF PROJECT The operating principle of the system is quite simple. From the main circuit, the current sensing modules perform continuous measurement of the currents of each electrical device. The current value is displayed on the LCD so that the user can directly monitor. These stream values ??are processed and sent to the master station by the wireless transmission module.At the main circuit, the total AC voltage and current consumed throughout the system are measured. When receiving data from the nodes, the processor will save the information needed in real time. From the information received, the system will calculate the capacity and send it to the management software.In the management software, users will be provided with all information of the system including: value of current consumption of each device in real time, power consumption of the system, operating voltage of the whole system. . The management software is designed to add alarm functions with pre-set rated values. When the system operates with voltage or current with a current exceeding the rated value, the software will warn the user for timely handling.+ The power block includes IC LM7805 which transforms the input voltage (7V -> 12V) into 5V DC voltage, and IC ASM1117 converts the 5V taken from the voltage into 3.3V. In addition, noise filter capacitors including high-pass filter capacitors and low-frequency filter capacitors are also added. The circuit is designed with a power indicator light to help us easily identify whether the circuit is powered or not.+ The main processor used is Atmega328P with 28 pins. Together with 16MHz quartz to help generate pulses for the MCU.The circuit is built with a UART code port to load code for the Atmega 328P MCU, the charging port communicates with usb charging TTL 5v / 3.3v FTDI FT232RL+ The display block uses 16x2 LCD to save space on the circuit board.+ Communication block using LoRa Ra-02 module operating at 433MHz frequency.FINALEnjoy a happy PCBWay Contest.If you have any questions send it to me.Email: truongart1999@gmail.comHAVE A NICE DAY!