16 Channel 12V Relay Module Board

Radiolink FPV Mobile Phone Holder Stand Folding Mount for RC4GS V3/V2 & RC6GS V3/V2 Controllers The Radiolink FPV Display Monitor Screen Holder is designed to securely hold mobile phones or FPV display screens on your RC controller. Simply insert the mount into the controller’s 1/4” (M6) thread hole, place your phone or monitor on the holder, and adjust the angle using the 360° rotating ball head. This makes it easy to achieve the perfect viewing position while flying, whether indoors or outdoors. This foldable and lightweight holder extends from 5.5cm to 9cm, supporting FPV monitors up to 4.3 inches and mobile phones up to 6.8 inches. Compatible with Radiolink RC4GS V2/V3, RC6GS V2/V3, and other devices with a standard thread hole, it is made of durable plastic and metal to withstand impact. Weighing only 105g, it is easy to install, remove, and carry, making it a reliable accessory for FPV enthusiasts. Features: Holds mobile phones or FPV display monitors securely 360° adjustable ball head for optimal viewing angles Extendable from 5.5cm to 9cm Supports FPV monitors up to 4.3 inches and phones up to 6.8 inches Compatible with Radiolink RC4GS V2/V3, RC6GS V2/V3, and devices with 1/4” (M6) thread hole Lightweight and durable, made of plastic and metal Easy to install, remove, and carry

SmartElex 8 Channel Multiplexer Breakout Module – (74HC4051) The SmartElex 8 Channel Multiplexer Breakout Module (74HC4051) is a compact and efficient solution for expanding input and output options in electronic projects. This 74HC4051 multiplexer breakout allows users to route multiple signals through a single microcontroller pin, solving the problem of limited I/O availability when working with sensors, switches, or analog inputs. It is designed for students, makers, engineers, educators, and startups who need a practical way to manage multiple device connections without increasing hardware complexity. This module acts as both an 8 channel multiplexer and demultiplexer, making it suitable for robotics, IoT systems, automation tasks, and rapid prototyping. It integrates smoothly with Arduino, Raspberry Pi, ESP32, and similar platforms, enabling users to scale projects without sacrificing performance or stability. Whether you are building sensor hubs, data acquisition systems, or experimenting with signal routing, this multiplexer demultiplexer module offers a reliable and easy-to-use interface that enhances flexibility in circuit design. Features: Based on the 74HC4051 8-channel analog/digital multiplexer IC Expands I/O by routing up to 8 signals through a single control interface Works as both a multiplexer and demultiplexer for flexible signal routing Helps manage limited microcontroller pins in multi-sensor projects Compatible with Arduino, Raspberry Pi, ESP32, and similar platforms Ideal for robotics, IoT systems, data acquisition, and prototyping

7Semi MCP4725 12bit Digital to Analog I2C Breakout Module The 7Semi MCP4725 12bit Digital-to-Analog I2C Breakout Module is a compact and reliable MCP4725 DAC module designed for accurate analog voltage generation in embedded and IoT projects. This single-channel digital-to-analog converter delivers true 12-bit resolution with a buffered rail-to-rail output, ensuring stable and precise voltage control. Operating on a 2.7V to 5.5V supply, it communicates via the I2C interface supporting standard, fast, and high-speed modes up to 3.4 Mbps. With an onboard non-volatile EEPROM, the module retains its last configured output even after power-off, making it ideal for automation systems, signal generation, and microcontroller-based applications where consistent analog output is critical. Features: 12-bit resolution provides high-precision output for precise analog signal representation. On-Board Nonvolatile Memory (EEPROM): Configuration settings are retained even when the power is turned off, ensuring speedy power-up and project continuity. Low power consumption: Ideal for battery-powered applications, which extends device life. I2C Interface: Supports three modes: Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps), with eight addresses available for flexible communication. Rail-to-Rail Output: Expands the output voltage range, increasing versatility in a variety of applications. Fast Settling Time: With an average settling time of only 6 µs, you can analyze signals quickly and accurately.

SmartElex Multiplexer USB/TTL/RS232/RS485 Communication Converter The SmartElex Multiplexer USB/TTL/RS232/RS485 Communication Converter is a versatile interface board designed to simplify data communication between different serial protocols. It allows users to convert and connect USB signals to TTL, RS232, or RS485 devices without complex wiring or additional hardware, making it ideal for students, makers, engineers, educators, and startups working with industrial equipment, microcontrollers, or legacy communication systems. This module helps bridge communication gaps between computers and embedded hardware, reducing setup time during development and troubleshooting. This multiplexer converter is commonly used in robotics, IoT device management, automation systems, PLC communication, sensor networks, and serial debugging tasks. It works smoothly with Arduino, Raspberry Pi, ESP32, and other microcontroller platforms, enabling stable data exchange and reliable serial protocol conversion for both prototypes and field applications. With easy integration and dependable performance, the SmartElex USB/TTL/RS232/RS485 converter is a practical tool for laboratories, development environments, and industrial interfacing projects that require seamless multi-protocol communication. Features: Supports USB to TTL, RS232, and RS485 serial communication Enables multiple protocol conversions in a single module Simplifies interfacing between computers and embedded systems Compatible with Arduino, Raspberry Pi, ESP32, PLCs, and sensors Ideal for robotics, IoT, automation, and industrial applications Suitable for debugging, monitoring, and data communication testing

Pludo STEM Kit DIY AIRCRAFT – DIY Science Kit for Kids 11–14 | Grade 6–8 Learn Concepts of Propulsion Ignite your child’s curiosity with the Pludo STEM Kit DIY AIRCRAFT, an exciting science experiment kit designed to make learning physics fun and hands-on. This educational kit introduces children to the fascinating concepts of aerodynamics, motion, and electric energy through a creative DIY aircraft project. As kids build their own wooden electric taxiing aircraft, they discover how power and motion work together in real machines. The model operates by converting electrical energy from a battery into mechanical motion using a small DC motor. When powered, the motor spins the front propeller at high speed, generating forward thrust. This thrust moves the lightweight aircraft along the ground on its wheels, clearly demonstrating how electric motors drive propellers in real aircraft systems. As one of the most engaging STEM kits and kids learning toys, it promotes active learning through play and experimentation. Whether used at home, in classrooms, or for school science projects, this science toy offers an enriching educational experience that blends fun, learning, and real-world application. What Your Child Will Learn: Discover how electric energy powers motion through an engaging aircraft experiment. Understand aerodynamic design principles that keep vehicles stable and efficient. Strengthen logical thinking, creativity, and fine motor skills through hands-on construction. Encourage curiosity and innovation by connecting theoretical science to practical application. Build confidence through problem-solving and experimentation that makes learning exciting. Educational Outcomes Energy Conversion: Explore how electrical energy transforms into motion and kinetic energy. Aerodynamics & Mechanics: Learn about airflow, balance, and motion through practical observation. Physics in Action: Connect real-world concepts of force, friction, and motion with fun experiments. STEM Skill Development: Build confidence in scientific reasoning, assembly, and testing. Collaborative Learning: Encourages teamwork and communication through group or classroom experiments. Did You Know? Aircraft wings are designed to create lift by shaping airflow — the same principle your Electrotaxi model uses to glide smoothly! Features Hands-on DIY science experiment kit that helps kids explore aerodynamics, motion, and electric energy through a fun aircraft-building activity. Encourages curiosity, logical thinking, and creativity as children assemble and test their own electric wooden aircraft model. Designed as an educational kit that supports experiential learning and enhances understanding of basic physics and energy conversion. Made from durable, safe, and eco-friendly materials, ensuring a secure and enjoyable playtime experience. Ideal for children aged 11–14 years (Grades 6–8), offering age-appropriate exposure to science and engineering principles. Promotes teamwork and problem-solving, making it perfect for classroom experiments, home learning, or group science activities. Included manual provides step-by-step guidance for easy assembly, testing, and understanding of the working model. Makes a perfect science toy gift for birthdays, holidays, or school science fairs — a fun way to inspire young minds in STEM learning.

7Semi PCA9306 I2C Bidirectional Voltage Level Translator Breakout Board The 7Semi PCA9306 I2C Bidirectional Voltage Level Translator Breakout Board is a compact and efficient PCA9306 voltage level translator designed to safely interface I2C and SMBus devices operating at different logic levels. Supporting voltage translation from 1.2V to 5.0V, this board enables seamless communication between low-voltage sensors and higher-voltage microcontrollers without manual direction control. As a dependable I2C logic level converter, it delivers minimal signal delay and stable bidirectional data flow, making it ideal for robotics, industrial controllers, embedded systems, and DIY electronics projects requiring precise mixed-voltage I2C communication. Allowable Voltage Level Translation The breakout can transfer voltages ranging from 3.3V to 5V. VREF1 (Low Side) VREF2 (High Side) 1.2V 1.8V, 2.5V, 3.3V, 5V 1.8V 2.5V, 3.3V, 5V 2.5V 3.3V, 5V 3.3V 5V Features: Wide Voltage Range Support: Operates between 1.2V and 5.0V, accommodating a wide range of components. Dual Bidirectional Channels: Translates both the SDA and SCL lines for complete I2C compatibility. I2C and SMBus Protocol Support: Fully compatible with regular and fast-mode I2C devices, as well as SMBus peripherals. No Direction Pins Required: Signal direction is automatically detected for easier design. Low propagation delay: A delay of less than 1.5ns maintains data integrity at high speeds. 5V Tolerant I/O Ports: Securely links 5V signals to lower voltage devices. Compact and simple to use: ideal for embedded applications, prototyping, and compact systems.

SmartElex 12V 10A Single Channel Power Relay Module The SmartElex 12V 10A Single Channel Power Relay Module is a reliable switching solution designed to control high-power electrical loads using low-voltage control signals. It helps safely operate devices that draw higher current without directly connecting them to sensitive control circuits. This module is suitable for students, makers, engineers, educators, and startups who are working on electronics projects, automation systems, or prototypes that require dependable and safe power switching. This single channel power relay module is widely used in robotics, IoT applications, home automation, and industrial control projects where motors, lights, pumps, or appliances need to be switched on and off reliably. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32, making integration simple for both learning projects and real-world systems. The sturdy design and consistent performance make it a practical choice for prototyping as well as final deployment in power control applications. Features: Single channel power relay module for high-current load switching Operates on 12V, suitable for automation and control applications Supports up to 10A load current for power devices Electrical isolation between control and load circuits for safety Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Compact and durable design for easy integration

Dual Micro USB 18650 LiPo DIY Power Bank Module (3.7V to 5V, 2A Output) The Dual Micro USB 18650 LiPo DIY Power Bank Module is designed to convert a 3.7V 18650 lithium battery into a stable 5V output with up to 2A current, making it perfect for charging smartphones, IoT devices, and other USB-powered gadgets. At its core, this module functions as a compact power management and boost conversion board, allowing you to build a fully customized portable power bank. It features dual Micro USB ports for convenient charging and integrated LED indicators to display charging and power status. Ideal for DIY enthusiasts, makers, and electronics hobbyists, this board gives you the flexibility to create your own reliable mobile power solution—provided you have basic electronic assembly knowledge. When installing items, it is important to keep the following in mind: Batteries can be connected in parallel with a voltage ranging from 3.2 to 4.2V, including 18650 flat and polymer batteries. We can connect the battery to the motherboard B + negative-, which is installed against the burning motherboard. Batteries that are new and old, or that have contradictory model brands, cannot be mixed. Features: Four-level LED bulb displays power, not working situation intelligent automated shutdown. The built-in lithium battery protection IC, overcurrent, overpressure, and undervoltage protection Dual USB output ports. Input requirements: 5V constant voltage power supply can charge input power, the most matching charger for 5V 1A or above. Requirements for rechargeable batteries: Compatible batteries include 18650 batteries, cell phone batteries, flat-panel batteries, MP3 batteries, and polymer lithium batteries ranging from 3.7V to 4.2V.

7Semi SHT40 Temperature & Humidity Sensor Breakout Board with 1.27mm Pitch The 7Semi SHT40 Temperature and Humidity Sensor Breakout is a compact, precision-engineered module built for applications where accurate environmental monitoring and ultra-low power consumption are crucial. Powered by Sensirion’s fourth-generation SHT40 sensor, it delivers highly reliable 16-bit temperature and humidity data while operating at just 3.3V. With its exceptionally low energy usage, fast response time, and robust ±1.8% RH and ±0.2°C accuracy, it’s an ideal upgrade for modern IoT, wearable, and battery-powered designs that demand consistent and stable performance. Designed for effortless integration, the board features a 1.27 mm pitch, a 4-pin header, and a versatile I2C interface with multiple address options, making it simple to deploy across embedded systems, development platforms, and prototype setups. Whether you're building smart home automation, industrial monitoring, or IoT environmental sensing projects, this SHT40 breakout ensures dependable, long-term operation even in demanding ambient conditions, helping engineers and makers achieve more accurate and energy-efficient data processing. Features: The SHT40 sensor delivers high-precision readings with ±1.8% RH humidity accuracy and ±0.2°C temperature accuracy for trustworthy environmental data. Designed for low-power applications, operating at under 0.15mA in low-power mode for extended battery life. Compact breakout board with a 1.27 mm pitch 4-pin header, making it ideal for tight-space electronic designs and fast prototyping. Provides a reliable I2C communication interface with multiple preconfigured addresses for easy use in multi-sensor networks. Efficient 3.3V operation ensures stable performance across microcontroller and IoT platforms. Fast response time of 8 seconds for real-time temperature and humidity tracking. Suitable for smart homes, industrial automation, IoT environmental nodes, air quality systems, and intelligent building applications.

SmartElex 12V 10A Single Channel Automotive Relay Module The SmartElex 12V Relay Module is a compact and reliable 12V relay module designed to safely control high-power electrical loads using low-voltage signals from microcontrollers. It helps users switch devices like motors, lights, pumps, and automotive accessories without directly handling high current, making projects safer and easier to manage. This Single Channel Relay Module is well suited for students, makers, educators, engineers, and startups working on electronics, robotics, or automation projects where dependable load control is required. Built for real-world applications, this relay module integrates smoothly with popular development platforms such as Arduino, Raspberry Pi, and ESP32, making it ideal for robotics control systems, IoT automation, smart vehicles, and DIY prototyping. Its automotive-grade design ensures stable performance in demanding environments, while the simple input interface allows quick integration into new or existing projects. Whether you are building a prototype, an automation solution, or an educational demo, this module offers dependable switching and easy integration for everyday electronics applications. Note: Refer to datasheet in the ATTACHMENTS section for more info. regd. the product. Features: Supports safe switching of 12V DC loads in high-power applications Uses an automotive-grade relay for reliable and long-lasting operation Compact and durable design suitable for space-constrained setups Easy to interface with Arduino, Raspberry Pi, ESP32, and other controllers Low-power trigger allows efficient control using logic signals or switches Suitable for automotive systems, robotics, DIY electronics, and automation projects

SmartElex USB-C Serial Basic Converter and CH340C IC Breakout Module he SmartElex USB-C Serial Basic Converter with CH340C is a compact USB-to-serial adapter designed to help users program, debug, and communicate with microcontroller boards and embedded systems. It converts USB signals to reliable UART serial communication, making it useful for students, hobbyists, engineers, educators, and startups working with boards that lack native USB support. With its USB-C interface and CH340C chipset, it provides a simple plug-and-play experience for connecting development boards, sensors, and custom circuits to a computer. This USB-to-serial converter is ideal for prototyping in robotics, IoT development, firmware flashing, serial monitoring, and automation projects. It works smoothly with platforms like Arduino, ESP8266, ESP32, Raspberry Pi (UART pins), and other TTL-based microcontrollers, making integration straightforward in both development and testing stages. Offering stable communication and easy computer connectivity, the SmartElex USB-C Serial Basic Converter with CH340C is a practical tool for labs, DIY electronics, and professional development environments. Features: Converts USB-C to TTL serial for programming and debugging CH340C chipset ensures stable and reliable UART communication Plug-and-play design for quick connection to development boards Compatible with Arduino, ESP8266, ESP32, Raspberry Pi (UART), and more Ideal for firmware flashing, serial monitoring, and IoT prototyping Compact breakout module for labs, workshops, and field testing

Anycubic Wash & Cure 3 Max The Anycubic Wash & Cure 3 Max is a high-capacity post-processing solution designed to handle large resin prints and batch workflows with ease. Featuring an ultra-large 15.1L capacity, it supports models up to 305 × 165 × 300 mm, making it ideal for professional users and large-format resin printers. With its all-in-one design, the machine combines washing and curing into a single streamlined process, reducing manual handling and improving efficiency. Equipped with advanced spray cleaning, bottom immersion, and a powerful 360° curing system, it ensures thorough cleaning and uniform curing across all surfaces. The customizable modes allow users to adjust washing and curing times, while intelligent monitoring features enhance safety and reliability. Designed for convenience and performance, this machine significantly improves workflow while reducing solvent usage and operational effort. The massive 15.1L capacity allows users to process large models or multiple prints simultaneously, making it ideal for industrial and batch production workflows. It supports models up to 305 × 165 × 300 mm, significantly increasing efficiency and reducing the need for multiple cleaning cycles. The one-click automated system simplifies post-processing by combining washing and curing into a single operation. This reduces manual handling, minimizes mess, and ensures consistent results every time, making it highly convenient for both beginners and professionals. The machine uses a combination of spray cleaning and bottom immersion to thoroughly remove uncured resin from all surfaces. This dual approach improves cleaning efficiency while reducing solvent usage, making it both effective and cost-efficient. With a high-intensity UV system and rotating platform, the machine delivers uniform curing from all angles. The 405nm LEDs provide strong curing performance, ensuring better strength, durability, and surface finish for printed models. Intelligent Monitoring System The built-in monitoring system detects issues such as low liquid levels, blockages, or open covers, ensuring safe and reliable operation. These smart alerts help prevent errors and improve overall user experience during long processing cycles. Features: Ultra-large 15.1L cleaning and curing capacity Supports large models up to 305 × 165 × 300 mm Fully automated one-click wash and cure operation Dual cleaning system: spray + immersion High-power UV curing with 360° rotation Intelligent monitoring with safety alerts Customizable wash and cure modes IPA-saving design for cost efficiency Ideal for professional, industrial, and batch workflows.

7Semi Vikram-1101 DRV8837 11V DC Motor Driver Breakout The 7Semi Vikram-1101 brings reliable motor control to compact robotics and automation builds, thanks to its efficient DRV8837 driver and wide 1.8V–11V motor voltage support. Designed for smooth brushed DC motor management, it features a stable 1A continuous output and a powerful 3A peak capability, making it ideal for hobby projects, mechatronics, and lightweight robotics systems. With PWM support and simple H-bridge control, achieving variable speed and direction becomes effortless. Engineers and makers appreciate its built-in safeguards, including thermal shutdown, undervoltage lockout, and overcurrent protection ensuring long-term durability even in demanding environments. The Vikram-1101 also offers resistor-set current limiting, eliminating the need for complex setups. Whether you're designing compact robots, automation rigs, or DIY motorized mechanisms, this versatile DC motor driver delivers dependable performance with ease. Features: Supports a motor power voltage range of 1.8V to 11V, making it suitable for a wide variety of small robotics and mechatronics projects. Provides 1A continuous output and 3A peak current, ensuring stable handling of brushed DC motors. Accepts up to 5.5V logic levels on IN pins, allowing easy interfacing with microcontrollers. Enables smooth motor operation through PWM-based speed control for precise performance tuning. Built with current limiting/regulation that works without requiring an inline sense resistor. Equipped with essential protection features including undervoltage lockout, overcurrent protection, and thermal shutdown.

24v 0.15A Brushless DC Fan The 24v 0.15A Brushless DC Fan is a compact and reliable cooling solution designed for efficient airflow in electronics and industrial applications. This dc brushless fan 24v features a high-performance brushless motor that ensures low noise, reduced power consumption, and extended lifespan compared to traditional fans. Its centrifugal blower-style design directs air precisely where needed, making it perfect for 3D printers, control cabinets, power supplies, and embedded systems. With a 24V DC operating voltage and 0.15A current rating, it delivers consistent cooling performance while maintaining energy efficiency. Built with durable housing and easy mounting points, this fan is ideal for continuous operation environments. Features: Efficient cooling performance Stable 24V DC operation Low power consumption Quiet and smooth airflow Compact and space-saving design Durable brushless motor technology Easy installation and wiring Ideal for electronics and enclosure cooling

SmartElex DS3231 RTC Module with EEPROM (I2C, AT24C32) The SmartElex DS3231 RTC Module with EEPROM is a high-precision RTC module designed for accurate date and time tracking in embedded systems and IoT projects. Based on the DS3231 chip with an integrated temperature-compensated crystal oscillator (TCXO), this I2C RTC module ensures stable and reliable timekeeping across temperature variations. It features an onboard 32Kbit AT24C32 EEPROM for non-volatile data storage, along with 1Hz SQW and 32KHz outputs for timing applications. Operating within an exact voltage range of 2.2V to 5.5V, the module maintains time even during power loss using a backup battery, making it ideal for data loggers, automation systems, and time-critical electronics projects. Features: Temperature-compensated crystal oscillator (TCXO) for accurate timing. Additional data storage is provided by a built-in 32Kbit EEPROM. 1Hz SQW and 32KHz output pins. Battery backup ensures uninterrupted functioning. Supports both 12- and 24-hour time types. It operates with a voltage supply range of 2.2V to 5.5V.