XH-M229 ATX Multi-Voltage Desktop Power Supply Adapter Module The XH-M229 ATX Power Supply Adapter Module is designed to transform any standard 24-pin ATX power supply into a reliable multi-output bench power station. With dedicated outputs for 3.3V, 5V, 12V, and −12V, it becomes a convenient power source for electronics hobbyists, students, repair technicians, and DIY makers who need clean and stable voltage lines for testing, prototyping, or debugging. This module features individual 5A protection fuses, high-current binding posts, LED indicators, and an on-board power switch, making it extremely user-friendly and safe to operate. Its compact 208×48 mm design fits neatly on any workbench. Whether you’re powering sensors, testing circuits, or working on small engineering projects, the XH-M229 provides a dependable and accessible power solution for all your electronics needs. Features: Converts a standard 24-pin ATX power supply into a fully functional desktop bench power source for electronics projects. Provides four stable voltage outputs: 3.3V, 5V, 12V, and -12V, making it suitable for a wide range of testing applications. Equipped with high-current banana plug binding posts for easy and secure power connections. Includes individual 5A safety fuses, power indicator LEDs, and an on-board power switch for enhanced usability and protection. Built with durable components and a compact form factor, ideal for makers, labs, repair benches, and DIY project setups.

SmartElex LMR51420 Buck Module – 3.3V 2A DC-DC Step-Down Power Supply Converter The SmartElex LMR51420 Buck Module is a compact and efficient DC-DC step-down converter designed to provide a stable 3.3V output at up to 2A of current. It efficiently converts higher input voltages into a regulated output, making it ideal for powering low-voltage circuits and embedded systems. Built around the LMR51420 chip, this buck converter module delivers high efficiency with minimal heat generation, ensuring reliable performance in a wide range of electronics applications. Whether you’re working on Arduino, ESP32, or custom IoT projects, it helps power your devices safely and efficiently. This DC to DC buck boost converter module is perfect for use in robotics, automation, and portable electronics. Its small size and easy integration make it a great choice for both beginners and professionals looking to create compact, energy-efficient power solutions. Features: Stable 3.3V Output: Provides a regulated 3.3V DC output at up to 2A current, perfect for powering microcontrollers and sensors. High Efficiency Design: The LMR51420 chip ensures excellent power conversion efficiency with low heat generation. Wide Input Voltage Range: Accepts input from 4.5V to 36V, making it suitable for various power sources. Compact and Lightweight: Small buck converter module ideal for embedded and space-limited electronics projects. Reliable DC-DC Conversion: Offers overcurrent and thermal protection for stable and safe operation. Easy to Integrate: Simple DC to DC buck boost converter module that connects easily with Arduino, ESP32, and IoT systems.

SmartElex RJ45 Connector Breakout Board The SmartElex RJ45 Connector Breakout Board is a reliable and convenient solution for integrating Ethernet connectivity into your electronics projects. Equipped with a pre-soldered RJ45 jack, this board eliminates the need for additional soldering, making it ideal for quick prototyping. It features built-in magnetics, status LEDs, and metal shielding to ensure stable and interference-free network performance. All the essential pins from the RJ45 connector are neatly broken out, providing easy access for wiring and testing. Whether you’re working on IoT devices, network hardware, or custom Ethernet interfaces, this breakout board offers a simple and efficient way to add Ethernet functionality to your design. Features: Pre-soldered RJ45: You can save time and effort because the RJ45 connector is already soldered to the breakout board. Integrated Transformer (Magnetics): Improves isolation and signal integrity. Status LEDs: These include green and yellow LEDs to show network activity visually. Pin Breakout: P1-P8 (Pins 1-8), Y+ (Yellow LED Positive), Y- (Yellow LED Negative), G+ (Green LED Positive), G- (Green LED Negative), and SH (Shield) are all separated out for convenient access. Shielding: To reduce electrical noise and increase dependability, the jack incorporates built-in shielding. Breadboard-Compatible: Made to work with a typical breadboard for prototyping.

18650 Battery Holder V3 Development Board 4-Cell Module Compatible with Raspberry Pi 3 This 4-cell 18650 Battery Holder V3 Development Board is designed to turn standard 18650 Li-ion cells into a reliable and portable power source for your projects. \With built-in overcharge, overvoltage, undervoltage, and overcurrent protection, it ensures safe and stable performance at all times. The board supports both 5V/3A and 3V/1A output modes, allowing you to power a range of electronics with confidence. Whether you’re building portable devices, IoT setups, or field-deployable prototypes, this module offers excellent versatility. It includes a micro-USB charging port, efficient power conversion (up to 95%), and a convenient voltage switching button. The board is fully compatible with Raspberry Pi 3, making it a dependable choice for makers, developers, and hobbyists working on power-independent applications. Features: Supports dual voltage outputs, 5V/3A for high-power devices and 3V/1A for low-power circuits, making it suitable for a wide range of electronics. Includes a built-in lithium battery protection IC, offering overcharge, overvoltage, undervoltage, and overcurrent protection for safe operation. Offers high conversion efficiency up to 95%, ensuring stable and optimized power performance. Features a micro-USB charging input with a charging current of 600mA–800mA for efficient battery recharge. Designed to hold up to two 18650 batteries, with clear polarity markings to prevent installation errors. Equipped with a voltage switching button for easy toggling between 3V and 5V outputs. Fully compatible with Raspberry Pi 3, making it ideal for portable Pi projects, DIY electronics, and embedded applications.

SmartElex MAX30101 Photodetector Breakout Board The SmartElex MAX30101 Photodetector Breakout Board is a high-performance optical sensor designed for precise light detection and analysis. Powered by the advanced MAX30101 sensor, it effectively measures the amount of light reflected from its LEDs, making it ideal for applications such as smoke or particle detection, proximity sensing, and photoplethysmography (PPG) for heart rate monitoring. With seamless I2C communication, the breakout board ensures easy connectivity with various microcontrollers, while the 0.1″ spaced pins allow for effortless breadboard use. As the successor to the MAX30105 and MAX30102, this sensor module delivers enhanced sensitivity and reliability for a wide range of optical sensing projects. Features: Integrated Cover Glass for Ultra-Low Power Operation and Optimal, Sturdy Performance Red, infrared, and green LEDs combined with an integrated photodetector PWM management of distinct LED channels ADC resolution of 18 bits I2C Address: 0x57 (7-bit) 5V Step-up DC/DC Converter and 1.8V Regulation onboard

SmartElex RP2350A Microcontroller NEO Development Board The SmartElex RP2350A Microcontroller NEO Development Board is a compact and efficient platform built around the RP2350A Raspberry Pi microcontroller. Its smart split architecture design separates the USB and button circuits, ensuring a slimmer profile and improved compatibility with a wide range of embedded projects. Whether you're exploring hardware programming for the first time or building advanced systems, this board offers a powerful yet user-friendly environment for development. Designed by SmartElex, it provides excellent versatility and reliability for hobbyists, students, and professionals working on next-generation embedded solutions. Pinout Diagram: Features: Microcontroller: RP2350A (dual-core ARM Cortex-M0+ CPU). Compact and thin PCB design Multiple GPIOs enable versatile interfacing. Power-efficient design. Supports Arduino and Micro-Python programming. On-board power management USB Type C connectivity RP2350A microcontroller chip developed by Raspberry Pi in the United Kingdom. Adopts a unique dual-core and dual-architecture design, equipped with dual-core ARM Cortex-M33 processors and dual-core Hazard3 RISC-V core processors, variable clock operating up to 150 MHz. 520KB of SRAM and 4MB of onboard Flash memory. Onboard FPC 8PIN connector for converting USB Type-C port via adapter board Castellated module enables soldering directly to carrier boards. USB 1.1 provides device and host support. Low-power sleep and inactive modes. Drag-and-drop programming with mass storage via USB. 28 multi-function GPIO pins (20 via edge pinout, remaining via solder points). Multiple hardware peripherals SPI × 1 I2C × 2 UART × 1 12-bit ADC × 4 Controllable PWM channel × 7

SmartElex TPS5430 Buck Module 5V 3A DC-DC Converter The SmartElex TPS5430 Buck Module is a reliable and high-performance DC-DC step-down converter designed to provide a stable 5V output with up to 3A of current. Built around the powerful TPS5430 IC, it ensures efficient voltage conversion while minimizing power loss and heat generation. This makes it ideal for powering microcontrollers, sensors, and embedded circuits. Thanks to its compact design and advanced protection features, the SmartElex Buck Module delivers consistent performance even in demanding environments. Whether you're working on robotics, IoT devices, or industrial automation projects, this module guarantees smooth and safe power delivery. It’s perfect for engineers, hobbyists, and anyone seeking a durable and efficient DC-DC converter or power regulation module. Note: Efficient Power Conversion: Minimizes power loss, making it suitable for battery-powered applications. Compact & Easy to Use: Designed for easy integration into embedded circuits. Advanced Protection Features: Overcurrent and thermal protections safeguard the module and connected devices. Low Ripple & Stable Output: reliable 5V output, suitable for sensitive electronics. Applications: Power supply for microcontrollers, FPGAs, and digital circuits (such as Arduino and Raspberry Pi). Providing power to sensors, communication devices, and peripheral modules. DC-powered devices requiring a consistent 3.3V or 5V output at high current (up to 5A). High-performance embedded systems, robotics, and automation projects. Battery-powered applications necessitate effective step-down voltage conversion. Features: Operates with an input voltage range of 5.5V to 36V for versatile use. Provides a fixed 5V output with up to 3A of current. High efficiency up to 95% for reduced heat and energy loss. Low ripple output ensures stable power for sensitive devices. Built-in overcurrent, thermal, and undervoltage protection. Compact and easy to integrate into embedded or industrial systems. Runs at 500kHz switching frequency for optimal performance.

SmartElex SPI or I2C BMP280 Barometric Pressure & Temperature Sensor Breakout Board The SmartElex SPI or I2C BMP280 Barometric Pressure & Temperature Sensor Breakout Board is a high-precision environmental sensing module based on the advanced Bosch BMP280 sensor. Designed for accurate measurement of atmospheric pressure and temperature, this versatile pressure temperature sensor can also function as an altitude sensor with an impressive ±1 meter accuracy. It supports both SPI and I2C communication interfaces, making it suitable for a wide range of development platforms. Built on a custom PCB with Molex PicoBlade connectors, the breakout board ensures easy integration and solderless connections with compatible devices. Additionally, it includes a voltage regulator and level shifter, allowing seamless operation with both 3.3V and 5V microcontrollers like the Arduino Uno or Metro M4. Whether you’re working on a weather station, IoT project, or environmental monitoring system, the BMP280 offers exceptional precision and reliability at an affordable cost. Features: High-precision barometric pressure and temperature measurement Acts as an altitude sensor with ±1 m accuracy Supports I2C and SPI communication interfaces Operates with 3.3V or 5V systems Built-in voltage regulator and level shifter Compact breakout board with Molex PicoBlade connectors for easy wiring Ideal for weather monitoring, IoT, and environmental sensing projects

SmartElex NanoBeacon IN100 Breakout Board The SmartElex IN100 NanoBeacon Board is a compact and efficient 2.4 GHz Bluetooth Low Energy breakout board designed for effortless wireless applications. Powered by the InPlay™ IN100 NanoBeacon™, it offers ultra-low power consumption and can operate for years on a single coin cell battery.This makes it ideal for projects such as wireless sensor networks, asset tracking, and retail beacons. The board comes preassembled with male headers for easy prototyping and integration, featuring a UART interface, GPIO pins, and I/O power switches. It also includes a JSTSH connector for ecosystem compatibility and a dedicated space for labeling. With the intuitive InPlay NanoBeacon Config Tool, users can configure the board through a simple graphical interface—no coding required—making the SmartElex IN100 NanoBeacon Board a perfect choice for developers seeking a low-power, ready-to-deploy BLE solution. Features: Model: NanoBeacon Board – IN100 Supply voltage range: 1.1 V to 3.6 V — supports very low battery voltages. Ultra low-power sleep current: < 650 nA — ideal for multi-year battery operation. 4 general-purpose GPIO pins available. Breakout board includes UART interface (3.3 V) and coin-cell battery holder for easy prototyping. Bluetooth Low Energy beacon ready: integrates the InPlay IN100 NanoBeacon™ SoC — no heavy firmware development required.

LilyPad CR2032 Coin Cell Battery Holder The LilyPad Coin Cell Battery Holder CR2032 is a compact and user-friendly power module designed for wearable and e-textile projects. It securely holds a 20mm coin cell battery and features an integrated slide switch, allowing you to easily power on or off your creation without removing the battery. Made with a durable purple PCB, this module offers a reliable and stylish way to supply power to your LilyPad circuits or other small electronics.Perfect for DIY enthusiasts, fashion tech designers, and students, this battery holder provides four sewing connection points (two positive and two negative) for seamless integration into fabric-based circuits. Its sturdy design prevents accidental disconnection and ensures stable performance, making it an essential component for powering light-up clothing, interactive accessories, and creative electronics projects. Features: Designed to hold a single CR2032 coin cell battery securely. Built-in slide switch for convenient power control. Four sewing tabs (two positive, two negative) for easy stitching into fabric projects. Compact and lightweight design ideal for wearables and e-textiles. Strengthened battery connector prevents accidental pop-out. Durable purple PCB ensures long-lasting reliability. Perfect for powering LilyPad Arduino circuits and small electronic modules.

SmartElex USB-C Connector Breakout Module The SmartElex USB-C Connector Breakout Module is the ideal solution for makers and engineers looking to add a USB-C connector to their projects with ease. Designed similar to the SparkFun USB C Breakout, this handy USB C breakout board eliminates the hassle of soldering fine SMD pins while offering robust connectivity. It conveniently breaks out essential pins — VBUS, GND, CC1, CC2, D+, and D− — to a standard 0.1" header, making it breadboard-friendly and perfect for rapid prototyping. With support for up to 1.5A nominal current and up to 3A depending on your power source, it ensures stable performance for a wide range of applications. Plus, the reversible USB-C design saves you from the common frustration of cable orientation, delivering both convenience and reliability in one compact module. Pin Configuration: A USB Type-C connector typically has 24 pins, although a 16-pin arrangement prioritizes key functions. Here's an overview of typical pin assignments: Power (VCC): Pins 1 and 4 typically deliver +5V, enabling USB Power Delivery (PD) for charging and powering devices. Ground (GND): Pins 2 and 5 are common ground connections that must be completed for the circuit to function properly. USB 2.0 Datalines: Pins 6 (D+) and 7 (D-) are used for USB 2.0 data transfer, which ensures compatibility with earlier USB devices. SuperSpeed Data Lines: Pins 8 (TX1+), 9 (TX1-), 10 (RX1+), and 11 (RX1-) enable high-speed data transfer (USB 3.x), with data speeds of up to 10 Gbps. Configuration Channel (CC): Pins 12 (CC1) and 13 (CC2) are used to identify cable orientation, negotiate power, and set up USB Power Delivery protocols. Sideband Usage (SBU): Pins 14 (SBU1) and 15 (SBU2) are utilized for alternate modes (audio or video) and can also serve other purposes in some applications. Additional data lines are optional: Pins 16 (TX2+, TX2-, RX2+, RX2-): These can be used in some setups to provide SuperSpeed data lanes, hence improving data transfer capabilities. Features: Easy USB-C integration allows you to incorporate a USB-C connector into designs without having to solder small SMD pads. Higher power output delivers up to three times the power of earlier USB generations. A reversible connection corrects the issue of inserting the USB cord incorrectly. Pin breakout Breaks out the essential pins of the USB-C connector (VBUS, GND, CC1, CC2, D+, and D-) into a 0.1" pitch header for convenient access.

SmartElex BME280 Atmospheric Pressure Sensor Breakout Board The SmartElex BME280 Atmospheric Pressure Sensor Breakout Board is a compact and versatile solution for monitoring environmental conditions with high precision. Featuring the advanced BME280 sensor, it measures atmospheric pressure, humidity, and temperature efficiently, making it perfect for weather stations, home automation systems, and IoT-based environmental projects. This BME280 breakout supports both I2C and SPI communication, ensuring easy integration with microcontrollers like Arduino and Raspberry Pi. With its low power consumption and wide operating range (30kPa to 110kPa), this breakout board is designed to deliver accurate data for indoor and outdoor applications without occupying much space. Features: BME280: Barometric Pressure, Humidity, and Temperature Sensor Operating Voltage: 3.3V I2C and SPI Communication Interface Temperature Range: -40C to 85C. Humidity Range: 0 - 100% RH, -3% from 20 to 80% Pressure Range: 30,000Pa to 110,000Pa; relative accuracy of 12Pa; absolute precision of 100Pa. Altitude Range: 0 to 30,000 ft (9.2 km) with relative accuracy of 3.3 ft (1 m) at sea level and 6.6 (2 m) at 30,000 ft. Incredibly small

SmartElex Speaker Module – Digital Audio & Buzzer for Arduino and DIY Projects The SmartElex Digital Speaker Module is a compact and versatile speaker module that delivers clear sound output for a variety of electronic and DIY applications. Designed with dual functionality, it works both as a high-fidelity speaker and as a buzzer, allowing you to easily add sound alerts, tones, and music to your projects. Whether you’re building an interactive robot, a notification system, or a sound-based educational tool, this module ensures crisp and reliable audio performance in a small footprint. Thanks to its Arduino compatibility and simple interface, connecting the SmartElex Digital Speaker Module to your microcontroller is quick and straightforward. It operates efficiently between 2.0V and 5.5V and features an integrated volume control for easy sound adjustment. With its durable construction, compact 40mm x 40mm size, and built-in vibration motor, it’s perfect for hobbyists, students, and professionals looking to bring sound and motion to life in their electronic designs. Features: Dual-function module: works as both a speaker and buzzer. Compact 40mm x 40mm design ideal for space-saving projects. Wide operating voltage range of 2.0V–5.5V for flexibility. Integrated potentiometer for volume control. Includes 2x JST-SH ports for easy connections. Built-in LRA vibration motor for tactile feedback. Fully Arduino-compatible for quick prototyping and integration.

SmartElex 4-Bit Bidirectional Voltage-Level Translator Breakout – TXB0104 Logic Converter Module The SmartElex 4-Bit Bidirectional Voltage-Level Translator Breakout is a compact and efficient module designed to safely connect devices that operate at different voltage levels. It helps your 3.3V and 5V logic circuits communicate smoothly without damaging any components. Powered by the reliable TXB0104 chip, this bidirectional voltage level translator automatically detects signal direction and adjusts accordingly, making it ideal for I2C, SPI, and UART communication between microcontrollers, sensors, and other digital devices. Perfect for Arduino, ESP32, and Raspberry Pi projects, this voltage level translator ensures safe and stable data exchange between mixed-voltage systems. Whether you’re building an IoT prototype or experimenting with embedded electronics, this breakout board simplifies your circuit design while ensuring reliable performance. Features: 4-Bit Signal Translation: Handles up to four data lines, allowing smooth voltage conversion between 3.3V and 5V devices. Automatic Direction Sensing: The TXB0104 chip detects signal direction automatically - no manual configuration needed. Bidirectional Compatibility: Works seamlessly for both input and output voltage translation between two logic levels. High-Speed Performance: Supports fast data transmission for I2C, SPI, UART, and other digital communication interfaces. Compact & Easy to Use: Small 4-bit bidirectional voltage-level translator breakout fits easily into any embedded or DIY project. Wide Application Range: Ideal for Arduino, ESP32, Raspberry Pi, and other microcontrollers in mixed-voltage circuits.

SmartElex SX1509 16-Channel I/O Expander Breakout Board with I2C Interface The SmartElex SX1509 16-Channel I/O Expander is the perfect solution when you’re running out of GPIO pins on your microcontroller. Using a simple I2C interface, it allows you to expand your project with 16 additional digital I/O pins. Each pin can be configured as input or output, letting you connect sensors, LEDs, or other devices with ease.Beyond basic expansion, this SX1509 breakout board comes packed with smart features like built-in PWM control for LED dimming, blinking, and breathing effects. It even includes a keypad engine that can handle up to 64 buttons in an 8×8 matrix, making it ideal for interactive projects, embedded systems, and robotics applications. With voltage flexibility and level-shifting capability, it’s a must-have for anyone working with Arduino or other I/O-limited microcontrollers. Features: 16 configurable digital I/O channels with bi-directional support I2C-compatible interface for easy microcontroller communication 5.5V tolerant I/Os with up to 15mA sink capability Built-in PWM generator for LED brightness control and effects Integrated keypad scanning engine supporting up to 8×8 (64 keys) Works as a level shifter between 1.2V and 3.6V banks Compact breakout design for quick prototyping