This adjustable DC-DC buck power module is a practical tool for stepping down voltages in various electronic setups, offering reliable performance for hobbyists and makers. In DIY projects, such as building mobile power sources or powering communication devices, this module helps maintain stable output voltages, making it easier to integrate into custom circuits without complex modifications. Adjustable output voltage from 0.8V to 24V for flexible power needs Supports input voltages between 5V and 32V, suitable for a range of power sources Achieves up to 90% conversion efficiency, reducing energy waste in operations Compact size of approximately 4.3 x 2.1 x 1.4 cm for easy incorporation into tight spaces Operates effectively in temperatures from -40 to 85 degrees Celsius, ensuring reliability in different environments This module fits well in scenarios requiring precise voltage regulation, such as automotive electronics or portable device modifications, where space and efficiency are key considerations.

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The Lily Pi ESP32 Microcontroller Board offers Raspberry Pi-compatible features for electronics enthusiasts and developers. It features an ESP32 chip and design elements that align with Raspberry Pi structures, making it a practical choice for expanding projects. This board suits IoT programming and development tasks, such as creating smart home devices or sensor networks. Its compatibility with Raspberry Pi GPIO pins allows for seamless integration, enabling users to add wireless capabilities without major hardware changes. ESP32-WAROVER chip for reliable processing in IoT applications 2 x 20 expansion ports matching Raspberry Pi GPIO for easy connections TF card holder with self-elastic design for simple card access HFD3 5V 2A relay and PCF8563 RTC for timekeeping and control functions Type-C input and DC-DC options (5-12V) for flexible power sources RST and custom buttons for quick resets and programming Double-layer USB interface supporting I2C/UART and 5V/1A output Light specifications include dimensions of 99.7 x 62.5 x 31.2mm and a 0.5W power rating. This board fits well in setups requiring compact, versatile microcontroller solutions for prototyping and development.

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This adjustable DC voltage booster converts input voltages between 2-24V to an adjustable output of 3-30V, making it a practical tool for electronic power management. In scenarios like DIY projects or battery-powered devices, it helps maintain stable voltage for components such as motors, LEDs, or charging circuits, preventing damage from voltage fluctuations. Supports low input voltages starting from 2V, ideal for high-power applications with 18650 batteries. Handles up to 15A input and 4A output current, with power outputs up to 80W depending on input. Includes protections like input overcurrent, reverse connection, and under-voltage safeguards for reliable operation. Features two-stage filtering for low ripple output, ensuring stable performance. Compact size of about 8x3.15x2.05cm and weighs only 36g, enhancing portability. This booster fits users involved in electronics tinkering or prototyping, where precise voltage adjustment and safety are essential.

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This relay module provides reliable delay timing and circuit control for a range of electronic applications. It operates with a wide voltage range and features an intuitive interface for setting timers and triggers. In practical scenarios, such as home automation or industrial machinery, this module helps manage timed operations, like turning devices on or off after a specific delay, improving efficiency in projects where precise control is essential. LCD display for clear visibility of current mode and parameters, making setup straightforward. Supports multiple trigger methods, including high/low level and switch control, for versatile integration. Optocoupler isolation to enhance anti-interference, suitable for demanding environments. Wide 6-30V power supply and one-key pause function for ease of use and safety. Includes sleep mode to conserve energy during inactivity. Timing range from 0.01 seconds to 9999 minutes, with parameters saved after power loss. With compact dimensions of about 7.1x3.9x2.5cm and a weight of 45g, it's easy to incorporate into various setups. This module fits well for electronics hobbyists and engineers seeking dependable timing solutions in their designs.

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This microwave radar sensor uses 5.8GHz technology to detect human motion indoors, helping automate lighting and security systems without relying on line-of-sight methods. In everyday use, it's effective for areas like corridors or garages, where it can trigger lights upon detecting movement within its adjustable range, improving energy efficiency and convenience in homes or offices. 360-degree detection angle for comprehensive coverage Adjustable detection distance from 1 to 10 meters radius Operates on DC 12-24V with low power consumption of about 0.5W Ceiling installation for discreet setup, sized at approximately 7.6x4.1x3.9cm Working delay adjustable from 10 seconds to 3 minutes Light control based on illumination levels from 2 to 2000 LUX This sensor fits well in indoor spaces such as living rooms, toilets, or warehouses, provided it's installed on a side or corner to optimize detection and avoid central blind spots.

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The Schumann Resonator Device offers a simple way to incorporate resonance technology into your daily routine for relaxation and wellness support. In a typical use, position it on a table or bookshelf about 1.5 meters above the ground in your bedroom or workspace. It works by influencing the surrounding environment, potentially helping to ease mental tension and enhance focus during everyday activities like reading or working. Plug-and-play design with low power consumption; no switch needed, just connect to power for immediate operation. Colorful breathing lights that add a subtle visual element to your space. Double-sided transmitting antennas for comprehensive environmental coverage. All-around design that minimizes dust buildup, ensuring consistent performance. Constructed from reliable PCB material for durability. Operates on DC12V with a current of at least 0.5A, making it compatible with standard adapters. This device fits well for those seeking straightforward tools to support mental well-being in home or office environments, without overwhelming complexity.

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This aluminum alloy grid cooling case is designed for Raspberry Pi boards, offering a practical solution for managing device heat. Constructed from durable aluminum, it helps maintain stable performance during prolonged use. For hobbyists and developers working on projects like home automation or IoT setups, this case ensures your Raspberry Pi runs efficiently by dissipating heat quickly, preventing potential slowdowns from overheating while keeping all ports accessible. Hollow grid design for enhanced airflow and fast heat dissipation Precise hole alignment with Raspberry Pi interfaces for easy connectivity Does not interfere with WiFi signals, allowing seamless wireless operation Side slots for GPIO cables and access to USB, network, audio, micro HDMI, and power ports Lightweight with strong corrosion resistance, made from low-density aluminum alloy Compatible with Raspberry Pi 3 Model B, Pi 2, and B+ models This case fits well into compact setups where reliable protection and ventilation are needed without adding bulk.

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This thermoelectric Peltier cooling module is designed for electronic projects, utilizing the Peltier effect to transfer heat from one side to the other. It offers a reliable way to achieve cooling or heating in compact setups. In practical use, it's ideal for DIY enthusiasts building custom cooling systems, such as maintaining optimal temperatures in small electronics, 3D printers, or refrigeration prototypes, ensuring components stay within safe limits when properly installed with heat dissipation. Features 127 component pairs for efficient heat transfer, with assembly requiring 85N/cm² pressure and thermal grease for optimal contact. Available in sizes like 40x40x4.0mm (12703 model), using standard silicone rubber sealing for durability. Operates with DC voltage up to 15.5V, delivering cooling power from 27W to 134W across models, depending on the variant. Requires proper heat sinking on the hot side to prevent overheating; do not energize without dissipation. Includes wires with tinned ends for easy integration into circuits. Works in temperatures from -55°C to 83°C, making it suitable for various environmental conditions. This module fits well in educational, hobbyist, or prototyping scenarios where precise temperature control is needed, compatible with standard electronic components for straightforward setup.

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This low speed worm gear motor serves as a reliable component for DIY robot and smart car projects, offering precise control in compact designs. In practical use, it's suitable for applications like building robotic prototypes or automating simple devices, such as electronic locks or camera mechanisms, where steady, low-speed operation helps achieve accurate movements without overheating. Features a metal gear for stable and wear-resistant transmission, ensuring longevity in repetitive tasks. Includes a pure copper motor that provides effective dust insulation and high temperature resistance for consistent performance. Constructed with 304 stainless steel for a high-precision gear box, enhancing durability and reducing slippage. Operates at a rated voltage of 6V or 12V, making it versatile for various power sources in electronics projects. Compact size of approximately 14x17x35mm allows for easy integration into space-limited designs. This motor fits well for hobbyists, students, and engineers seeking a dependable option for small-scale automation, addressing needs for abrasion-resistant and efficient components in everyday projects.

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The 5V relay module serves as a versatile component for electronics enthusiasts and hobbyists working on projects like Arduino setups or basic home device automation. In a typical use case, this module enables you to switch higher voltage devices, such as lights or motors, using a low-voltage signal from a microcontroller, making it suitable for prototyping smart home controls or sensor-based systems without needing complex wiring. Operates on a 5V supply with 5V-12V TTL control signals for easy integration with Arduino boards. Features a normally open and normally closed contact to handle both DC and AC loads up to 220V, providing flexibility for various applications. Includes a power indicator and a control indicator light that illuminates when the relay is active, helping with quick status checks. Utilizes a transistor drive for the relay coil and a pull-down circuit on the control pin to minimize the risk of unintended activations. Compact design suitable for breadboard use, enhancing reliability in experimental setups. Supports control of everyday devices, offering a straightforward way to interface low-voltage logic with higher-power circuits. This module fits well for beginners and intermediate users in DIY electronics, providing a reliable option for safe and effective device control in educational or personal projects.

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This development board serves as a practical tool for DIY electronics enthusiasts, providing essential voltage regulation for various projects. It features compatibility with standard R3 setups, making it a straightforward option for building and testing circuits. For instance, use it to power microcontrollers and sensors in instrument design or simple automation tasks, where stable voltage is key. It supports a range of power inputs and automatic driver installation to get you started quickly without complex setup. Dual voltage outputs: 5V and 3.3V DC for versatile component compatibility Automatic driver installation upon plugging in, simplifying initial use Added pin headers for easy connections and prototyping Power supply range of 5V to 9V, accommodating common batteries and adapters Electrostatic bag packaging to protect against static damage during handling Seamless integration with IDE for board and COM port selection Light specifications include its ability to run included programs for immediate testing. This board fits well for beginners and hobbyists seeking a reliable, no-frills solution for electronics experimentation.

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This lithium battery protection board is engineered for 3S 12V systems, providing fundamental safeguards for lithium-ion setups like those using 18650 cells. In practical use, it's suitable for DIY projects, such as building custom power banks or small electric devices, where it helps prevent battery damage from overcharge, over-discharge, or short circuits, potentially extending the life of your battery pack. Handles up to 25A continuous current for reliable performance in moderate-power applications Operates at a standard 12.6V rated voltage to match common 3S configurations Compact dimensions of 56mm x 45mm x 4mm allow for easy integration into tight spaces Includes essential safety features like overcurrent and short-circuit protection Compatible with standard 18650 lithium batteries for straightforward setup No additional pins required, simplifying connections Light specifications include a power supply voltage of 12V and a package for 3 strings. This board fits well for electronics enthusiasts or hobbyists working on battery-powered projects needing basic protection without complex extras.

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The Deek-Robot Digital Delay Relay Switch offers reliable time-based control for various electrical applications. It allows users to set delays for activating or deactivating circuits, making it a practical tool for automation and timing needs. In everyday use, this switch is ideal for projects like automated lighting systems, motor controls, or safety mechanisms in DIY electronics, where precise timing and quick emergency stops can prevent accidents or optimize operations. Features a one-button emergency stop for immediate circuit interruption, enhancing user safety. Includes voltage input anti-reverse protection to prevent wiring errors and potential damage. Supports power-off memory, retaining settings even after power loss for uninterrupted use. Automatic sleep mode that turns off the display after 5 minutes of inactivity, conserving energy. Operates on a wide DC 5-30V range with output capacity up to 10A for versatile compatibility. Compact dimensions of 70 x 40 x 23mm, making it easy to install in tight spaces. This switch fits well in environments with temperatures from -40 to 85 degrees Celsius, suitable for both indoor and outdoor time-control setups by hobbyists and engineers.

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This timing delay relay module serves as a reliable component for automotive control systems and industrial electromechanical equipment, allowing precise timing and control of electrical circuits. In automotive applications, it's useful for tasks like delaying starter motor engagement or managing lighting sequences, helping to prevent electrical issues and ensure smooth operation in vehicles or machinery. Features voltage input anti-reverse connection for safe wiring and reduced risk of damage. Includes signal input optocoupler isolation to enhance anti-interference capabilities in noisy environments. Supports long-term memory of settings after power loss, maintaining programmed parameters for convenience. Offers a powerful FLASH MCU for online programming, enabling custom functions tailored to specific needs. Operates across a wide temperature range of -40 to 85 degrees Celsius, suitable for various conditions. Compact size of 64.2 x 34.8 x 18.5 mm makes it easy to integrate into tight spaces. Light specifications include a working voltage of DC 12V and output capability up to DC 30V 5A or AC 220V 5A. This module fits well for automotive enthusiasts, DIY modifiers, or professionals needing dependable timing solutions in control systems.

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The Waveshare 7-inch portable IPS touch screen provides a versatile display option for computing projects and everyday use. For tech enthusiasts and developers, this screen serves as an effective portable monitor, enabling interactive setups with Raspberry Pi for coding, prototyping, or gaming on devices like XBOX360 and PS4. It simplifies connections to mini PCs or desktops, offering a clear view for tasks that require touch input without complex installations. Features a 1024x600 hardware resolution, adjustable up to 1920x1080 for flexible viewing options Supports single-touch with Raspberry Pi on OS like Raspbian and Ubuntu, and five-point touch on Windows 10/8.1/8/7 Driver-free setup for easy integration with popular devices including BB Black and Banana Pi Includes a multi-language OSD menu for adjusting brightness, contrast, and power settings Equipped with a 3.5mm audio jack and HDMI audio output for sound connectivity Also compatible with VGA input, though a separate cable is needed This touch screen fits well in mobile or compact environments, making it suitable for hobbyists seeking reliable, multi-compatible displays for their projects.

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The Waveshare 7-Inch Capacitive Touchscreen LCD serves as a versatile display option for Raspberry Pi enthusiasts and mini PC users, featuring a compact IPS screen with responsive touch capabilities. In practical scenarios, such as prototyping electronics, educational coding projects, or setting up a portable workstation, this display enables intuitive interaction and easy integration, helping users streamline their workflows without complex setups. 7-inch IPS screen with 1024x600 hardware resolution, adjustable up to 1920x1080 for flexible viewing options Toughened glass capacitive touch panel with 6H hardness, providing durable and precise touch response Wide compatibility with devices like Raspberry Pi, Banana Pi, and desktop computers, supporting OS such as Raspbian, Ubuntu, and Windows 10/8.1/8/7 Multi-language OSD menu for straightforward adjustments to brightness, contrast, and power settings Includes a 3.5mm audio jack for HDMI audio output and optional VGA input (cable sold separately) Comes with a high-quality PC case offering adjustable tilt angles of 30° or 50° for optimal viewing This display fits well in space-constrained environments, making it suitable for hobbyists, developers, and professionals seeking a reliable, driver-free touchscreen solution for their projects.

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The Waveshare Wide-Angle 120-Degree Camera offers a practical solution for enhancing vision capabilities in embedded projects, specifically with the NVIDIA Jetson Nano Developer Kit. This camera is ideal for applications needing broad coverage, such as robotics, surveillance, or AI image processing, where its wide field of view helps capture more of the environment without needing to reposition the device. 8-megapixel IMX219 sensor with 3280 x 2464 resolution for detailed imaging 120-degree diagonal angle of view and less than 13.6% distortion for expansive, accurate visuals Compact 25mm x 24mm size and 12g weight, making it easy to integrate into small-scale projects Four screw holes for stable mounting and a 15-pin FFC for straightforward connectivity Built-in 3.3V power output to simplify power management in setups 1/4-inch CMOS sensor with a 1.88mm focal length and F2.2 aperture for versatile lighting conditions This camera fits well in development environments for tech enthusiasts and professionals seeking reliable, wide-angle imaging for Jetson Nano-based innovations.

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The Landa tianrui DC motor speed controller allows precise adjustment of motor speeds using PWM technology, complete with a reversible switch for forward and reverse operation. This controller is useful for hobbyists and DIY enthusiasts working on projects like robot builds, fans, or small machinery, where controlling motor direction and speed helps achieve accurate performance and prevents overheating. Features a potentiometer for smooth speed adjustments from 0% to 100% Includes reverse polarity and high current protection up to 10A for safer operation Equipped with a reversible switch and screw terminals for easy wiring Made from durable FR-4 material, ensuring reliable performance in various conditions Supports input voltages from 6V to 30V DC, with a maximum power of 200W Compact design measures 7.4 cm x 4.7 cm x 2.8 cm and weighs just 68 g for easy integration This speed controller fits well in educational electronics, prototyping, or automation setups, offering practical control for motors in a variety of DC-powered applications.

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This aluminum heat sink, sized at 40x40x11mm, helps manage heat in electronic components to support safe operation. In electronics projects, such as building custom LED lights or assembling circuit boards, it dissipates heat from chips and LEDs, reducing the chance of overheating and extending component lifespan. Made from durable aluminum for efficient thermal conductivity. Black finish provides a clean, professional look that blends into various setups. Lightweight at 15g, allowing easy attachment without adding bulk. Compatible with LEDs, power ICs, memory modules, and transistors for versatile use. Performs better with added airflow, like from a fan, to handle higher heat loads. Compact dimensions make it suitable for space-constrained designs. It's a practical choice for hobbyists and engineers working on small-scale cooling solutions in DIY electronics.

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This dual USB power converter enables charging of two mobile devices at once from a DC source, offering a practical solution for on-the-go power needs. In scenarios like road trips or outdoor activities, it connects to your vehicle's power outlet, ensuring your phone and tablet stay charged without needing multiple adapters. Supports dual USB outputs for simultaneous charging of up to two devices Delivers up to 5V / 3A output for efficient power delivery Features a compact size of 7cm x 2.2cm x 2.5cm and weighs just 27g, making it easy to carry Operates with input voltages from 9V to 36V, suitable for various DC sources Achieves up to 92% efficiency to minimize energy loss Constructed with durable PCB and electronic components for reliable performance This converter fits well for users who frequently travel or work in environments with limited access to standard outlets, providing a straightforward way to maintain device connectivity.

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The 433MHz wireless transmitter and receiver kit provides a straightforward solution for wireless communication in remote control projects. This kit suits applications like remote-controlled switches, security systems, or garage doors, where reliable signal transmission is needed. It integrates easily with microcontrollers such as Arduino for DIY electronics, allowing users to send and receive data over short distances without complex wiring. Operates at 433.92MHz frequency for standard RF communication Receiver module: 5V DC operation, low quiescent current of 4mA, compact size of 30x14x7mm Transmitter module: Versatile 3.5-12V input, transmission range of 20-200 meters depending on environment, and 19x19mm form factor AM operating mode with a transfer rate up to 4KB/S and 10mW power output Simple pin configuration for easy setup: DATA, VCC, GND Includes one receiver and one transmitter module for immediate use Ideal for hobbyists or engineers needing a basic, compatible wireless link for prototyping or small-scale automation tasks.

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This 2.4GHz wireless transmission module, featuring NRF24L01P technology with PA and LNA, supports long-distance data sending and receiving in the ISM band. Ideal for DIY electronics projects, IoT setups, or remote monitoring systems, it helps extend wireless communication range for reliable data transfer in applications like sensor networks or point-to-point links, without needing complex wiring. Enhanced transmission up to 20dBm power for greater reach in open environments Compact size of 41mm x 15mm for easy integration into small devices Operates on 3.0-3.6V, with low current draw (115mA transmit peak, 45mA receive peak) for energy efficiency Includes an external antenna to improve signal stability and reduce interference Supports full two-way communication for versatile network configurations Power-down mode with minimal 4.2uA current to conserve battery life Light specifications: Works in the 2.4GHz band, compatible with microcontrollers for custom projects. This module fits well for makers and developers seeking dependable wireless solutions for everyday tech challenges.

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This 433MHz wireless remote control duplicator allows you to copy signals from existing remotes for garage doors, gates, and home systems, making it a practical tool for everyday access management. In scenarios like losing a remote or needing duplicates for multiple users, it simplifies the process by cloning compatible signals quickly and accurately, without requiring advanced technical skills. Utilizes advanced IC programming to avoid accidental code erasure during setup Supports cloning of up to two signals from different remotes on its four-channel design Compatible with 99.99% of common fixed and learning code remotes, excluding rolling codes Includes pre-installed CR2016 batteries for immediate use Features a compact black plastic build for easy handling and portability Operates at 433MHz with a transmit range of 50-100 meters in open areas This remote suits homeowners or hobbyists seeking a reliable, user-friendly option for duplicating controls in standard setups.

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The Landa Tianrui Precision Clock Module is a compact RTC (Real-Time Clock) board designed for microcontroller projects, compatible with Arduino and Raspberry Pi systems. In practical use, this module helps maintain accurate time in applications like data logging, IoT devices, or environmental monitoring, even in varying temperatures, by providing a stable clock source without needing additional power converters. Timing accuracy of +/-5ppm within -40°C to +85°C, ensuring reliable performance in diverse conditions. Battery backup for uninterrupted operation during power loss. Supports 3.3V and 5V systems directly, with full clock functions including alarms and a digital temperature sensor. Low-power consumption and high-speed I2C interface for easy integration. Reset button and outputs like 1Hz and 32.768kHz for flexible project needs. With dimensions of 2.2 cm x 1.2 cm x 0.5 cm and a black PCB material, it's a lightweight (5g) option for hobbyists and engineers seeking precise timing solutions in compact designs.

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