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_{This Peacefair PZEM-004T Multi-function AC Power Monitor is very popular in electrical consumption measurement projects. It is capable of measuring four interrelated electrical variables as voltage, current, power, and energy.} 

_{This tiny PZEM-004T circuit is great for measuring AC (RMS) voltage, current, and power (single-phase). The unit easily interfaces with Arduino and other hardware using the code library.}

_{Simply power the board with a power supply (or you can use the AC source you are measuring) and connect the circular sensor to the board. Run the wire through the circular sensor and you`re ready to start measuring the voltage, current, and power. The circuit also comes with a TTL to USB adapter wire for easy connection to a computer or microcontroller.}

_{This module features a TTL serial data communication interface, you can read and set the relevant parameters via the serial port; but if you want to communicate with a device which has USB or RS232 (such as a computer), you need to be equipped with different TTL pinboard (USB communication needs to be equipped with TTL to USB pinboard; RS232 communication needs to be equipped with TTL to RS232 pinboard).}

_{The Peacefair PZEM-004T features a built-in button on the panel, used to make the electricity clear function.}

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The Waveshare 10.1-inch Capacitive Touch Screen LCD (E) (SKU-18096) is a high-quality display designed for various applications, including embedded systems, interactive kiosks, and digital signage. With its 1024×600 resolution and capacitive touch interface, it offers a responsive and clear user experience.

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The Plastic Frame 550 is a robust and lightweight drone frame designed for hexacopter configurations. With a wheelbase of 550mm, it offers a balanced combination of stability and agility, making it suitable for both hobbyists and professionals in aerial photography, surveillance, and other drone-based applications

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The Waveshare SIM7600E-H HAT for Raspberry Pi (SKU-14952) is a versatile cellular expansion board that adds 4G LTE, 3G, 2G, and GNSS (GPS/GLONASS/BeiDou) connectivity to your Raspberry Pi. Ideal for IoT, remote sensing, and mobile communication projects, it offers a comprehensive suite of features for seamless integration.

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The YHY202D USB RFID Reader Dongle is a compact and efficient device designed for reading 13.56 MHz RFID cards, particularly compliant with the MIFARE® Classic 1K, 4K, and S50/S70 standards. Its plug-and-play functionality allows for seamless integration into various applications without the need for additional software or drivers. This makes it an ideal solution for rapid deployment in systems requiring contactless identification.

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The XH-M452 is a versatile 12V temperature and humidity controller module designed for precise environmental regulation in various applications. It is particularly useful for controlling the temperature and humidity in environments such as greenhouses, incubators, terrariums, and server rooms.

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The Waveshare 4-Port USB HUB HAT is an expansion board designed to enhance the USB capabilities of your Raspberry Pi. It provides four additional USB 2.0 ports, allowing you to connect multiple peripherals such as keyboards, mice, storage devices, and more. This HAT is particularly useful for Raspberry Pi models with limited USB ports, like the Raspberry Pi Zero series.

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This compact and efficient 0.56-inch Three-Wire LED Digital Voltmeter is designed for precise DC voltage measurements in the range of 0V to 100V. Its bright LED display ensures clear readability, making it ideal for monitoring battery voltages in motorcycles, cars, and other DC-powered systems. The voltmeter features reverse connection protection, safeguarding the device against potential damage from incorrect wiring

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The 30cm USB Cable (Blue) offers a compact, high-quality solution for powering and connecting your devices. Whether you’re charging, transferring data, or connecting peripherals, this USB cable is built to handle everyday use with reliable performance. Its 30cm length makes it the perfect choice for short-range connections, such as between your smartphone, tablet, or PC, and other devices like external hard drives, printers, or game controllers.

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The BO Wheel - Black (65mm) is a high-quality, durable robot wheel designed to provide excellent traction and support for various robotics and DIY projects. With its 65mm diameter, this wheel is perfect for small to medium-sized robots and can be easily paired with BO motors for smooth and stable movement. Whether you're building a robot for learning purposes or working on a more complex automation project, this wheel is a reliable and cost-effective choice.

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The 360-Degree Encoder Module for Arduino is an essential sensor for detecting rotational motion in your robotics and automation projects. With its precise ability to measure the position and speed of a rotating object, this module allows your Arduino-based systems to track the angle and rotation of motors, wheels, or shafts in real-time

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The 96mm Mecanum Wheel typically features a diameter of 96mm and is equipped with rollers set at a 45° angle to the wheel's axis. These rollers are arranged in a pattern that allows for the independent control of each wheel's rotation, facilitating precise movement in any direction

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The demo shows how the following two software operate.
SSCOM serial port debugging assistant is more convenient to operate, free of installation, and more convenient for complete display and analysis of instructions, but the disadvantage is that the data is not intuitive.
Modbus Poll software is directly operated on the register, and the data display is more convenient to observe, but the disadvantage is that the instruction is not displayed completely, so you need to be familiar with the Modbus register operation.