SmartElex 5V 1A LM2575S Buck Converter Module The SmartElex 5V 1A LM2575S Buck Converter Module is a compact step-down power solution designed to provide a stable 5V output from a higher DC input source. It helps solve common power regulation issues in electronic projects by ensuring consistent voltage delivery to sensitive components. This module is suitable for students, makers, engineers, educators, and startups who need a reliable and easy-to-use power module for embedded systems, learning projects, and everyday electronics development. This buck converter module is ideal for powering microcontrollers, sensors, communication modules, and peripherals used in robotics, IoT devices, automation systems, and general prototyping. It can be easily integrated into projects using platforms such as Arduino, Raspberry Pi, and ESP32, making it convenient for both experimentation and final builds. The dependable performance and simple integration allow users to focus on application development without worrying about unstable power supply. Note: Ensure adequate heat dissipation during high power output. Suitable for powering devices that require a stable 5V power supply. Ideal for circuits and projects that need a 5V stable output with 1A current draw. Features: Wide input voltage support for flexible use across projects Fixed and stable 5V output for low-power electronics Delivers up to 1A output current for reliable performance Efficient switch-mode design to reduce heat and power loss Compact and sturdy module for easy integration Built-in protection against overcurrent, overheating, and short circuits Applications: Power supply for Arduino, Raspberry Pi, ESP32, and other controllers Supplying 5V power to sensors, modules, and peripherals Battery-powered devices needing efficient step-down conversion LED lighting and small DC-powered systems DIY electronics projects and prototyping setups

SmartElex 5V 2A LMR51420 DC Buck Boost Converter Module The SmartElex 5V 2A LMR51420 DC Buck Boost Converter Module is a compact power management solution designed to provide a stable 5V output even when the input voltage varies above or below the required level. It helps solve common power issues in electronic projects where input sources such as batteries or adapters are not consistent. This module is suitable for students, makers, engineers, educators, and startups who need a reliable and efficient way to power embedded systems, development boards, and electronic circuits without complex power design. This DC buck boost converter is well suited for robotics, IoT devices, automation systems, and portable electronics that require steady 5V power under changing load or input conditions. It can be easily used alongside platforms like Arduino, Raspberry Pi, and ESP32 to power controllers, sensors, and communication modules. The compact form factor and dependable performance make it easy to integrate into both prototypes and final products, helping users build stable systems with minimal effort Notes: High Efficiency: Efficient Conversion: High efficiency ensures minimal energy loss, making it ideal for battery-powered applications. Compact & Easy Integration: Small size allows seamless integration into circuits. Advanced Protection: Features overcurrent and thermal protections to ensure device and module safety. Low Ripple Output: Produces 5V DC output, essential for sensitive components. Features: Compact module design for easy integration into electronic circuits Delivers a clean and stable 5V output with low ripple High switching frequency enables fast response and efficient operation Wide input voltage support for flexible power sources Fixed 5V output ideal for 5V-based electronics Applications: Battery-powered and portable electronic devices IoT and embedded systems using microcontrollers and sensors 5V LED lighting and indicator circuits Custom power supply units requiring regulated 5V output Wearables and compact embedded projects

SmartElex 5V 3A 2 Channel Signal Relay Module The SmartElex 5V 3A 2 Channel Signal Relay Module is a dependable 2-Channel Relay Module designed to switch and control multiple medium-power devices with precision. Powered by a stable 5V relay module design, it uses two JY4100F-S-DC5V-C relays, each rated to handle 3A at 120V AC or 24V DC, ensuring exact and consistent switching performance. Its core function is to provide electrically isolated control between low-voltage microcontrollers and higher-voltage loads, making it safe and efficient for real-world applications. With onboard LED indicators, protective circuitry, and seamless compatibility with Arduino, Raspberry Pi, and ESP32, this module is a practical choice for automation systems, IoT solutions, and smart control projects. Applications: Smart home systems have dual device control. Dual motor or light control in automation. IoT initiatives require various device management. robotics, alarms, and security systems. Industrial process control Cautions: Provide a good 5V regulated supply. Do not exceed the rated voltage and current for contacts. Use isolation techniques for high voltage connections. Prevent moisture and dust collection on the PCB. Features: A dual-channel relay module may control two loads. 5V DC operating voltage allows for simple integration. Each channel can switch up to 3A at 120V AC or 24V DC. Ideal for microcontrollers such as the Arduino, Raspberry Pi, and ESP32. Quick response time: ≤10 ms operation and ≤5 ms release. Low power usage (`0.36W each channel, ~0.72W overall). Includes status LEDs for each channel. High insulation resistance (≥100 MΩ) ensures safety and reliability. Built-in safety features ensure safe operation. The operating temperature range is -40°C to +85°C for durability.

SmartElex 5V 3A 4 Channel Signal Relay Module The SmartElex 5V 3A 4 Channel Signal Relay Module is a compact and reliable 4 Channel Relay Module designed to control four independent medium-power loads with precision. Powered as a 5V relay module, it integrates high-quality JY4100F-S-DC5V-C relays, each capable of switching up to 3A at 120V AC or 24V DC. With dedicated trigger inputs and LED status indicators for every channel, it allows easy monitoring and accurate switching. This module directly interfaces with popular microcontrollers such as Arduino, ESP8266, and Raspberry Pi, making it ideal for IoT, home automation, and embedded control applications where safety, isolation, and consistent performance are essential. Applications: Home automation (controlled lights, fans, and locks) Industrial machine control IoT multi-device projects. Robotics and Motor Control Security systems and alarms. Cautions: Always utilize a properly regulated 5V power supply. Avoid exceeding the rated load capacity. Provide proper isolation for AC loads. Store the module in a dry, clean place. Features: Four-channel relay module allows for independent control of four devices. Operates at 5V DC and has an active LOW/HIGH trigger. Each relay can handle up to 3A at 120V AC or 24V DC. Compatible with Arduino, ESP8266, Raspberry Pi, and more platforms. Each channel has its own set of LED indicators. Fast switching: ≤10 ms operation and ≤5 ms release time. Low contact resistance (≤100 mΩ) ensures effective operation. The total power consumption is around 1.44W over four channels. High insulation resistance and dielectric strength are essential for safety. Wide operational temperature range (-40°C to +85°C).

SmartElex 5V 3A 8 Channel Signal Relay Module The SmartElex 5V 3A 8 Channel Signal Relay Module is a dependable switching solution built to control multiple electrical devices with precision. This 8 Channel Relay Module features eight JY4100F-S-DC5V-C relays, each capable of safely switching loads up to 3A at 120V AC or 24V DC. Designed to operate on a stable 5V supply, it offers individual input triggers and LED indicators for real-time status visibility. With strong electrical isolation and seamless compatibility with Arduino, ESP32, and Raspberry Pi, this 5V relay module is well-suited for automation panels, IoT systems, and complex control applications where reliable multi-channel switching is essential. Applications: Smart home automation (e.g., managing several appliances) Complex industrial automation systems. Robotics projects require several actuators. IoT systems have several relay outputs. Alarms, security, and access control panels Cautions: Use a well regulated 5V supply with adequate current (at least 1A suggested). Ensure that relay load restrictions are not exceeded. To avoid electrical dangers, securely isolate all AC wiring. Maintain a dry, clean, and dust-free atmosphere. Features: An 8-channel relay module with individual control. It operates at 5V DC and has active LOW/HIGH triggers. Each relay can handle 3A at 120V AC or 24V DC. Compatible with Arduino, ESP32, Raspberry Pi, and more platforms. Status LEDs for each channel are used to monitor operation. Fast switching: ≤10 ms operation and ≤5 ms release. Contact resistance of ≤100 mΩ enables stable conductivity. Total power usage is around 2.88W across all channels. High insulation resistance and dielectric strength are essential for safety. Suitable for -40°C to +85°C temperatures.

SmartElex 5V/3.3V Power Supply Stick with ON/OFF Switch The SmartElex 5V/3.3V Power Supply Stick with ON/OFF Switch is a compact and efficient regulated power supply module designed to provide reliable power for breadboard-based electronics and prototyping projects. It operates on a 6–12V DC input and delivers a stable, selectable 5V or 3.3V output, making it ideal for powering microcontrollers, sensors, and logic modules. This power supply module features an onboard ON/OFF switch for easy control, a voltage selection switch for flexibility, and a power LED for real-time status indication. To ensure safe operation, it is equipped with a PTC fuse that protects against overcurrent, helping safeguard both the connected components and the module itself. Features: 6-12V input through barrel jack or 2-pin header. The output voltage can be controlled to either 3.3V or 5V. 800mA of operational current. An ON/OFF switch allows for convenient control. Voltage selection switch for 3.3V/5V output. The power status LED provides visual indication. PTC fuse protection against overloads. Breadboard-friendly headers have a 0.1" pitch for simple insertion.

SmartElex 6-Pin Bluetooth Module HC-05 The SmartElex HC-05 Bluetooth Module is a versatile and easy-to-use wireless communication module designed to add Bluetooth functionality to your projects. It supports both Master and Slave modes, allowing it to connect seamlessly with other Bluetooth-enabled devices such as smartphones, laptops, and microcontrollers. Using a UART interface, it enables quick and reliable serial data transmission, making it a favorite among hobbyists, students, and developers working on wireless embedded systems. With its 6-pin configuration and compact design, the SmartElex Bluetooth Module ensures stable connectivity and excellent range. It’s ideal for applications like home automation, wireless data exchange, robotics, and IoT-based communication systems. Whether you’re building a smart device or experimenting with wireless control, this module delivers dependable performance with low power consumption and easy integration. Applications: Embedded Projects. Industrial Applications. Computer and Portable Devices. GPS receiver. Features: Based on CSR Bluetooth Chip supporting Bluetooth v2.0+EDR protocol. Supports both Master and Slave modes for flexible communication setups. Default baud rate of 9600 with user-configurable settings. Wireless range up to 10 meters for stable connectivity. Low power consumption – 30mA during pairing and 8mA during communication. Compatible with Arduino, Raspberry Pi, and other microcontrollers. Provides authentication and encryption for secure data transfer.

SmartElex 74HC595 Shift Register Breakout Module The SmartElex 74HC595 Shift Register Breakout Module is a practical solution for expanding digital outputs while using minimal microcontroller pins. This shift register board uses the SOIC version of the 74HC595 IC to clock serial data and latch it into stable parallel outputs, making it perfect for LED control, motor drivers, and other digital applications. With all pins of the 74HC595 IC breakout accessible through standard 0.1″ headers, integration into breadboards or PCBs is simple. The thoughtfully placed Serial In and Serial Out pins allow easy cascading of multiple boards, enabling scalable I/O expansion without complex wiring. Features: The 74HC595 Shift Register IC allows for easy extension of I/O pins on microcontrollers. Data Clocking and Latching: Effectively handle multiple outputs with little I/O use. Standard 0.1" headers provide easy integration with access to all pins. Chaining Capability: The serial in and out pins allow many boards to be connected together. Compact Design: A plan that saves space and is suitable for a variety of applications. Versatile Applications: Suitable for controlling LEDs, motors, and other devices.

SmartElex 8 Channel Level Shifter – TXS0108E Bi-Directional Logic Converter Module The SmartElex 8 Channel Level Shifter is a compact and efficient module designed to safely convert signal voltages between devices operating at different logic levels. It’s based on the TXS0108E chip, which allows smooth and reliable communication between 3.3V and 5V systems. This 8 channel voltage level shifter is perfect for projects involving multiple sensors, microcontrollers, or communication modules that run on different voltage levels. It ensures your data signals are transmitted accurately without damaging sensitive components, making it ideal for Arduino, ESP32, Raspberry Pi, and other development boards. Compact, easy to use, and highly versatile, this level shifter module is an essential tool for hobbyists, students, and engineers working on IoT, robotics, and embedded electronics projects. It helps you bridge the voltage gap safely and efficiently between your digital circuits. Features: 8 Independent Channels: Safely shifts signal voltages on up to 8 separate data lines, perfect for multi-device communication. Bi-Directional Conversion: Allows two-way communication between 3.3V and 5V logic systems without signal loss. High-Speed Performance: Supports fast data transmission for I2C, SPI, UART, and other communication protocols. Compact and Easy to Use: Small, plug-and-play level shifter module ideal for breadboard and prototype setups. TXS0108E Based Design: Uses the reliable TXS0108E IC for stable and accurate voltage level translation. Wide Compatibility: Works with Arduino, ESP32, Raspberry Pi, and other microcontrollers or sensors using different logic levels.

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