This compact USB-C lithium battery charging module is designed for integrating into electronic devices, offering a straightforward way to manage battery charging. In practical use, it's ideal for DIY projects, such as building custom power banks or adding charging capabilities to portable instruments in the 3C digital space, helping to maintain device reliability without bulky setups. Features a 5V input via USB-C for broad compatibility with standard chargers. Includes over-discharge protection at 2.5V and overcurrent protection up to 3A to safeguard batteries. Supports a maximum charging current of 1000mA with a precise cut-off at 4.2V ±1% for efficient charging cycles. Compact board size of 2.6cm x 1.7cm, making it easy to incorporate into space-limited designs. Utilizes an MCU type with 3 pins for simple integration into various circuits. Applicable for 3C digital devices, ensuring it fits common consumer electronics needs. This module suits electronics enthusiasts and developers seeking a reliable, space-efficient solution for battery management in their projects.

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This 20-pack of 6.5mm audio jack adapters serves as a practical solution for DIY electronics projects, allowing users to connect audio components reliably. In everyday use, these adapters are helpful for tasks like building custom audio setups, repairing instruments, or integrating devices in home studios, providing a straightforward way to extend or modify connections without permanent alterations. Features a durable construction of plastic and copper, ensuring long-lasting performance in various environments Compact size of 1.1 x 1.1 x 8.2cm each, making them easy to handle and integrate into tight spaces Lightweight at 112g for the pack, which facilitates portability for on-the-go projects Versatile compatibility with standard 6.5mm audio ports, suitable for guitars, microphones, and speakers Offered in a 20-pack for efficient stocking, ideal for multiple or repeated uses These adapters fit well for electronics hobbyists, students, or technicians needing dependable connectors for audio-related DIY endeavors.

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This 18650 lithium battery protection board is engineered for 7.4V and 8.4V setups, providing fundamental safeguards to help maintain battery health in various electronic projects. In practical scenarios, it's useful for integrating into DIY battery packs for items like LED lamps, solar-powered devices, or 12V electronics, where it helps prevent overcharging and short circuits, potentially extending the lifespan of your batteries. Compact size: 35x16.6x2.5 mm, allowing for easy installation in space-limited designs Overcharge protection at 4.28V ± 0.05V to avoid voltage spikes Over-discharge cutoff at 2.9V ± 0.05V to protect against deep discharge Maximum working current of 3A, with peak instantaneous current up to 5A Low quiescent current under 3uA for minimal energy loss when idle Short circuit protection with delayed self-recovery for added safety Requires a charging voltage of 8.4-9V for compatible operation This board fits well in low-power applications such as massagers or monitoring systems, but it's important to ensure it matches your specific voltage needs for reliable performance.

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This compact cooling fan offers straightforward ventilation for home environments. Designed with a black iron case and plastic fan blades, it measures 12cm in diameter and fits easily into tight spaces. In everyday scenarios, such as a warm office or bedroom, this fan helps maintain air circulation by gently moving air around, providing a simple way to reduce stuffiness without overwhelming noise or power usage. Compact dimensions of 12.0 x 12.0 x 2.6cm for easy placement on desks or shelves Lightweight at 262g, making it convenient to move as needed Operates on 220-240V AC with a low current of 0.1A, suitable for standard outlets Features a 20cm cable for flexible positioning near power sources Black color and durable iron-plastic construction for everyday reliability 12cm fan diameter ensures efficient airflow in confined areas This fan is a practical choice for those seeking basic cooling in small living spaces, compatible with typical 220V systems for hassle-free operation.

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This 5-inch HDMI touch screen display, from Waveshare, offers a compact solution for enhancing Raspberry Pi projects with interactive visuals. Use it to create custom interfaces for home automation setups, educational prototypes, or portable computing devices, connecting easily via HDMI for clear display and touch input on compatible systems. Features an 800 x 480 resolution for sharp, detailed visuals on a 5-inch screen. Includes resistive touch control for precise navigation, ideal for gloved or stylus use. Compatible with Raspberry Pi boards and other mini-PCs like BeagleBone Black, expanding its utility beyond single platforms. Allows use as a standard HDMI monitor for general computing tasks. Option to turn off the backlight, helping reduce power consumption during extended sessions. Light specifications include a compact design suitable for desk or portable setups, fitting well for tech enthusiasts and developers seeking a reliable, versatile display option.

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This 220V brushless cooling fan in black is tailored for DIY projects, providing steady airflow to manage heat effectively. In DIY setups like electronics assembly or custom ventilation, it helps maintain optimal temperatures for components, reducing the risk of overheating and potential damage. Constructed from durable PA66 material for longevity in various environments. Operates on 220-240V with a frequency of 50/60Hz, ensuring compatibility in many regions. Compact dimensions of 12.0 cm x 12.0 cm x 3.8 cm and a lightweight 377g design for easy integration into tight spaces. Draws 0.14A current, promoting energy efficiency during extended use. Brushless motor reduces noise and wear, suitable for prolonged applications. Black color offers a discreet look in professional or hobbyist setups. This fan fits well in scenarios where reliable, space-saving cooling is essential for DIY electronics and prototyping tasks.

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The Waveshare SG90 micro servo is a lightweight, compact motor suitable for RC vehicles and robotics projects, offering reliable angle control in a small package. In practical use, this servo helps enthusiasts achieve precise movements, such as controlling flaps on model airplanes or robotic arms for educational experiments, making it a practical choice for hobbyists working on space-constrained designs. Provides 2.0kg/cm torque at 4.8V and 2.2kg/cm at 6V for handling light loads with accuracy. Achieves speeds of 0.09s/60° at 4.8V and 0.08s/60° at 6V, enabling quick responses in dynamic applications. Offers a 180° rotation angle with plastic gears, ensuring smooth operation without added weight. Operates on 4.8 to 6V, with a compact dimension of 22.8mm x 12.2mm x 28.5mm and weight of 10.5g, ideal for integration into tight spaces. Features a 7us dead band for precise control, reducing errors in positioning tasks. This servo fits well in beginner to intermediate projects where affordability and dependability matter, such as DIY drones or automated prototypes.

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This in-line on/off cord switch is designed for straightforward control in various DIY electrical setups, featuring a water-resistant build to handle light moisture exposure. In everyday use, it's helpful for managing power to devices like lamps or small appliances in workshops, garages, or outdoor projects, allowing you to turn things on and off without accessing the main power source. Made from durable PA66 material for reliable performance Water-resistant construction to protect against splashes or humidity Rated for a 10A thermal current, suitable for typical household devices Compact dimensions of 7.0 x 2.5 x 2.0 cm for easy integration into tight spaces Includes two switches per pack for multiple applications Simple in-line design that clips onto cords without complex wiring With a lightweight 88g build, this switch fits well for hobbyists tackling home improvement tasks, offering practical control where it's needed most.

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The DS3231 real-time clock module offers precise timekeeping for electronic projects and devices. In scenarios like IoT setups, data loggers, or alarm systems, it maintains accurate timing and temperature monitoring, even during power interruptions, helping ensure reliable operation without constant power. High-precision DS3231 chip with 2ppm accuracy, resulting in about 1 minute annual error under normal conditions Built-in temperature sensor accurate to +/- 3°C for environmental monitoring I2C bus interface supporting up to 400KHz for fast, easy integration with microcontrollers like Arduino Rechargeable LIR2032 battery for backup power, keeping the clock running when main power is off 32K memory (AT24C32) for storing additional data Compact size of 38mm x 22mm x 14mm and lightweight at 8g, suitable for space-constrained designs This module is ideal for hobbyists, students, and engineers working on projects that need dependable real-time clocks with added functionality.

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The Metal Proximity Sensor Module serves as a reliable component for electronic projects, detecting metal objects through inductive sensing. In practical scenarios, this sensor helps in automation setups, such as monitoring machinery parts or creating touch-free switches in robotics, by signaling when metal is nearby without direct contact. Constructed from iron and stainless steel for durability in various environments Operates on a 6-36VDC power supply with up to 300mA current, offering flexibility for different project voltages Provides an 8mm sensing distance for precise detection of metal objects Compact dimensions of 6.5 x 3.0 x 3.0 cm and lightweight at 95g, making it easy to integrate into tight spaces Compatible with Arduino and similar microcontrollers for straightforward setup in DIY electronics Simple wiring and operation, reducing complexity for beginners and advanced users alike This module fits well in educational projects, prototyping, or industrial applications where non-contact metal detection is needed, supporting reliable performance in everyday use.

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The Waveshare 5G HAT is an expansion board designed for Raspberry Pi and similar single-board computers, featuring the SIM8202G-M2 module for enhanced connectivity. This board suits various projects requiring reliable 5G access, such as building smart gateways, drones, or live streaming devices in regions with Sub-6G coverage. It enables high-speed data transfer for tasks like remote monitoring or IoT applications, integrating seamlessly with existing setups. Supports 5G NSA and SA networks, plus LTE and WCDMA for broad compatibility across multiple bands. Includes USB 3.1 port for fast connections to PCs, Raspberry Pi, or Jetson Nano. Features dual SIM slots with single standby, switchable via AT commands, and multi-constellation GNSS for precise positioning. Onboard controls like power switch, reset button, and LED indicators for easy operation. Comes with SMA connectors for attaching antennas and an audio jack for voice applications. Compatible with Windows, Linux, and Android operating systems. With its flexible power options and M.2 slot, this board fits developers working on advanced connectivity projects needing stable, high-efficiency performance.

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This DC-DC step down voltage converter changes a 12V input to a stable 5V output, suitable for a range of electronic devices. In practical scenarios, it's useful for powering gadgets like USB devices in vehicles or DIY electronics projects, ensuring consistent voltage without compatibility issues. Input voltage range of DC 8-20V for flexible power sources Output of 5V at 3A, supporting up to 15W of power Efficiency up to 96%, helping minimize energy loss Wide operating temperature from -40°C to 80°C for reliable performance in various environments Built-in protections against over-current, over-temperature, and short circuits to safeguard connected devices Compact design for easy integration into existing setups This converter fits well in automotive, hobbyist, or industrial applications where a dependable 5V supply from 12V systems is required.

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The RFID-RC522 is a compact module designed for reading and writing RFID cards, commonly used in DIY electronics and security projects. It operates at a standard 13.56MHz frequency, making it suitable for interfacing with various microcontrollers for tasks like access control or data logging. In everyday use, this module can help enthusiasts build simple security systems, such as key fob readers for home entry or inventory tracking in small-scale applications. It integrates easily into Arduino or similar setups, allowing users to detect and process RFID tags without complex wiring. Supports Mifare1 S50, S70, Ultralight, Pro, and Desfare cards for versatile compatibility Low working current of 13-26mA at 3.3V, ideal for battery-powered devices Idle current as low as 10-13mA and sleep mode under 80uA for energy efficiency Peak current stays below 30mA, preventing overload in sensitive circuits 13.56MHz frequency ensures reliable performance in standard RFID applications Light specifications include a compact design that fits into most prototyping boards. This module is a practical choice for hobbyists and developers working on electronic projects requiring RFID functionality.

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The GX16 6-Pin Aviation Plug Socket Connector is a metal-based component designed for secure electrical connections, available in a pack of 5 pieces. These connectors are useful in aviation, electronics projects, or DIY wiring setups, providing a straightforward way to join cables and devices while maintaining reliable performance. Constructed from durable metal for long-lasting use Features a 6-pin design with an installation diameter of 16mm Low contact resistance of ≤0.005 ohm, helping to minimize signal loss Compact dimensions of 4.5 x 2.5 x 2.0 cm, making them easy to integrate into tight spaces Includes 5 pieces per pack for convenience in multiple applications Weighs just 99g total, offering portability for fieldwork or repairs This product fits well for hobbyists, technicians, or engineers working on electrical assemblies where dependable connectors are essential.

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The Current to Voltage Signal Conversion Module serves as a practical tool for electronics enthusiasts and professionals, converting current signals into voltage for various applications. In settings like industrial automation or DIY projects, this module helps integrate current-output sensors with voltage-based systems, ensuring reliable data transfer without complex setups. Supports a wide supply voltage range of 7-36V, accommodating diverse power sources. Handles multiple input ranges, including 0-20mA current and 0-10V voltage, for versatile use. Offers high stability and good linearity to maintain consistent performance over time. Features high-precision color ring resistance for accurate measurements in precision tasks. Includes low temperature drift and high accuracy to minimize errors in varying conditions. Designed with high power capabilities for demanding electronic environments. Light specifications include packaging in a static bag for safe handling. This module fits well in projects requiring precise signal conversion, such as sensor monitoring or control systems.

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This 7-pin aviation connector set offers five metal plugs for reliable DIY electrical connections, suitable for various projects. In everyday use, these connectors help hobbyists and technicians create secure wiring setups, such as in custom electronics or vehicle modifications, by ensuring stable links that minimize signal loss. Constructed from durable metal to withstand frequent handling and environmental exposure Features a 7-pin configuration for versatile multi-wire connections in complex setups 16mm installation diameter allows for straightforward mounting in tight spaces Low contact resistance of ≤0.005 ohm supports efficient current flow and reduces potential errors Compact dimensions of 4.6 x 2.0 x 2.0 cm make them easy to integrate without adding bulk Lightweight at 101g, facilitating portability for on-the-go projects These connectors fit well in scenarios requiring dependable, user-friendly options for electrical assembly, particularly for those new to DIY electronics.

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These 40-pin jumper wires offer a practical solution for breadboard connections in electronic projects. Each wire features male and female ends, allowing for versatile linking between components. In prototyping scenarios, such as assembling circuits on a breadboard for Arduino or Raspberry Pi setups, these wires enable easy custom connections. You can separate them as needed to fit non-standard spacing, reducing clutter and improving workflow efficiency. Multicolored design aids in quick identification and organization of wires during complex builds Separable cables let you create custom lengths for odd-spaced headers, enhancing flexibility Made from high-grade copper for reliable conductivity and durability in repeated use Standard male-to-female ends ensure compatibility with most breadboards and headers Includes 40 pins for ample supply in various project scales These wires fit well for electronics hobbyists, students, or professionals seeking dependable, adaptable components for circuit testing and development.

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This 3.5-inch touchscreen display serves as a compact alternative to HDMI monitors for Raspberry Pi users, offering a direct interface for system monitoring and interaction. In practical use, it's helpful for developers and hobbyists working on portable projects, such as building a custom dashboard for home automation or field data logging, where a lightweight screen simplifies viewing and controlling Raspberry Pi outputs without needing external peripherals. Features a 320x480 pixel TFT LCD with LED backlight for clear visuals in various lighting conditions. Includes an XPT2046 touch controller for responsive, accurate input via SPI interface at up to 32MHz speed. Compatible with Raspbian systems, supporting automatic driver installation for seamless setup. Allows video playback, photo capture with multiple camera modes, and software keyboard for keyboard/mouse-free operation. Operates on Linux Core vision 3.18.9, ensuring reliable performance with Raspberry Pi's official UI. Color depth of 65,536 levels for vibrant display of graphics and interfaces. This display fits well in scenarios requiring a space-efficient, touch-enabled screen for Raspberry Pi-based applications, making it suitable for educational projects or prototyping where portability is key.

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The GSM SMS Alarm Module provides a reliable solution for sending custom security notifications via SMS or calls when triggered by a switch signal. In practical scenarios, this module suits applications like home security systems or industrial monitoring, where it detects events—such as a door opening or power loss—and alerts preset contacts with user-defined messages, ensuring timely awareness without constant oversight. Triggers an SMS or call when the input port connects to ground, allowing for personalized alarm content. Easily integrates into other devices for seamless remote alarm functionality. Includes a built-in rechargeable lithium battery for backup power, sending alerts even during main power outages. Supports customizable messages for both alarm events and when conditions return to normal. Operates on a DC 5V-15V power supply for versatile compatibility with various setups. Features simple setup, making it accessible for DIY enthusiasts or professionals needing quick installation. This module fits well for users seeking an effective, low-maintenance way to enhance security in environments prone to unauthorized access or failures, offering peace of mind through dependable notifications.

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This LandaTianrui 80cm USB to RS232 serial adapter cable offers a straightforward solution for connecting USB-enabled devices to equipment with RS232 serial ports. It facilitates data transfer between modern computers and legacy hardware without requiring complex setup. In everyday use, this adapter is helpful for technicians or hobbyists working with devices like modems, digital cameras, or industrial equipment, allowing seamless communication and data exchange in environments where serial connections are still needed. Converts USB ports to RS232 serial interfaces for broad compatibility with various peripherals. Supports up to 1 Mbps data transfer rate, suitable for reliable connections in data logging or device programming tasks. Features plug-and-play functionality with hot-swapping, enabling quick connections without restarts. 80cm cable length provides flexibility for setups where devices are not side-by-side. Built for ease of use, helping to bridge gaps between new and old technology without additional software. Ensures stable connections for applications like cellular phone programming or ISDN adapters. Light specifications include a standard USB-A to DB9 connector design, making it a practical choice for users needing occasional serial connectivity in professional or personal projects.

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The GL09 Plus is a GSM alarm system designed for reliable everyday security monitoring. It uses cellular networks to send alerts, making it suitable for areas without Wi-Fi. In a typical use case, you might install it in a home or warehouse to detect intrusions or environmental changes, like smoke or low battery, and receive immediate SMS notifications or calls on your phone. Features eight alarm inputs with customizable SMS for each, allowing flexible setup for various sensors. Includes low-power sleep mode and real-time battery monitoring to extend device longevity in battery-powered setups. Supports a wide voltage range from DC5V to DC16V, ideal for diverse power sources. Allows setting up to six contact numbers for alerts, with options for NC or NO alarm modes. Compatible with iOS and Android apps for easy configuration via text messages. Specifications include compact dimensions of 8 x 5.8 x 2.2 cm, enhancing its portability for remote or mobile applications. This alarm fits well for users needing straightforward, remote monitoring solutions for homes, warehouses, or equipment, providing peace of mind through timely notifications.

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The 12V Time Relay Module provides reliable automated control for switching devices on and off based on set timers. In practical scenarios, this module helps in projects like managing irrigation systems, where precise timing ensures water pumps activate and deactivate at scheduled intervals, or in home automation for controlling lights and appliances. Supports DC 12V supply and triggers from 5V to 30V or a button press for versatile integration. Offers 27 working modes with adjustable delay times from 0.01 seconds to 999 minutes to suit various applications. Features a simple button interface (S1, S2, S3, S4) for easy mode and time settings, including decimal point adjustments. Relay output handles up to 10A, isolated for safe control of low-voltage or 220V lines. Compact dimensions of 63 x 42 x 20mm make it easy to incorporate into tight spaces. This module is well-suited for electronics enthusiasts, hobbyists, and professionals working on timing-based automation, offering straightforward solutions for precise control needs.

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This Bluetooth stereo amplifier board is a compact component for DIY speaker builds, providing wireless audio connectivity via Bluetooth 5.0. For audio enthusiasts working on custom speaker projects, this board simplifies integration by offering easy volume control and compatibility with various power sources, ensuring stable performance in home setups or portable systems. Adjustable volume potentiometer with an integrated switch for straightforward audio level management. Copper DC connector designed to handle high currents without overheating, promoting reliable operation. Solid 470uF capacitors for effective power storage and heat dissipation, supporting consistent sound quality. Free DC head lead for versatile wiring, compatible with standard adapters or batteries. Bluetooth 5.0 technology for improved transmission efficiency up to 15 meters without obstacles. Built-in self-recovery protections against overheating and short circuits for added safety. With dimensions of 55 x 38 x 17mm and made from durable ABS plastic, it's suitable for users assembling speakers rated 30-200W and 4-8 ohms, fitting well in projects requiring efficient, space-saving audio amplification.

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This Bluetooth stereo amplifier board is a compact component for DIY audio projects, providing wireless connectivity and amplification for custom speaker builds. In everyday use, it's helpful for hobbyists assembling portable speakers or home audio systems, allowing easy connection to smartphones or tablets via Bluetooth for streaming music, with simple volume adjustments to suit different environments. Potentiometer with switch for precise volume control, enhancing user convenience in DIY setups. Copper DC connector designed to handle high currents without overheating, ensuring reliable performance. Solid 470uf35V capacitors for stable power storage and dissipation, supporting consistent sound quality. Bluetooth 5.0 technology for improved transmission efficiency and up to 15m range without obstacles. Includes free DC head lead for straightforward wiring, compatible with various power sources. Built-in self-recovery protections against overheating and short circuits for added safety. With a size of 55 x 38 x 17mm and compatibility for 30-200W speakers at 4 or 8 ohms, it's well-suited for makers needing a versatile, ABS plastic board that adapts to 5-24V supplies.

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