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 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.

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.

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 NEO-M9N GPS Breakout Board with GNSS Module & SMA Connector The SmartElex NEO-M9N GPS Breakout Board is a high-performance GNSS receiver module designed for reliable and accurate positioning. Built around the powerful u-blox M9 engine, this board supports GPS, GLONASS, Galileo, and BeiDou constellations simultaneously, ensuring fast and stable location tracking even in challenging environments. This NEO M9N GPS Breakout Board delivers up to 1.5-meter accuracy and supports multiple interfaces including UART and I2C, making it easy to integrate with microcontrollers like Arduino, Raspberry Pi, and other embedded systems. It also features advanced jamming and spoofing detection for secure operation, and an onboard rechargeable battery for quicker hot starts, ensuring you get fast fixes every time. Perfect for projects involving vehicle tracking, autonomous robots, and drone navigation, this Smart GPS Breakout Board offers exceptional performance with minimal setup effort. Features: Equipped with a 92-channel u-blox M9 GNSS receiver for high accuracy. Supports concurrent reception of GPS, GLONASS, Galileo, and BeiDou signals. Provides ~1.5-meter horizontal accuracy and up to 25Hz update rate. Includes SMA connector for strong and stable antenna connectivity. Built-in rechargeable battery for faster hot-start positioning. Detects and reports jamming or spoofing for secure signal reception. Supports UART and I2C communication (Display Data Channel).

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.

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.

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 BME688 Environmental Sensor Breakout Board Measures Temperature, Humidity, Pressure & Gas The SmartElex BME688 Environmental Sensor is an advanced all-in-one module designed to measure air quality, temperature, humidity, and barometric pressure with high accuracy. Powered by Bosch’s BME688 chip, this compact environmental sensor can detect a wide range of gases, including volatile organic compounds (VOCs), carbon monoxide, and hydrogen, making it ideal for monitoring air conditions in both indoor and outdoor environments. This smart air quality sensor communicates via I2C or SPI, ensuring easy integration with various microcontrollers like Arduino, Raspberry Pi, and ESP32. With its precise readings and low power consumption, the SmartElex BME688 is perfect for environmental monitoring systems, weather stations, and smart home applications. Its compact design, reliability, and versatility make it a great choice for students, developers, and professionals building air-quality or IoT-based projects. Features: Combines gas, temperature, humidity, and barometric pressure sensing in one module. Detects VOCs, VSCs, carbon monoxide, and hydrogen in ppb range. Supports both I2C and SPI communication interfaces. High accuracy with ±3%RH humidity and ±1.0°C temperature precision. Operating voltage: 1.71V – 3.6V (typically 3.3V). Compact design with 2x Molex PicoBlade connectors for easy integration. Ultra-low power consumption with sleep mode and adjustable scan modes.

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 E32‑433T20S Ebyte SX1278 433 MHz Breakout Board – High-Range LoRa RF Transceiver Module The SmartElex Breakout Board is designed to provide reliable long-range wireless communication for your IoT and embedded projects. Powered by the Ebyte E32-433T20S module with the SX1278 LoRa chip, it operates at 433 MHz and offers excellent range and stability for data transmission. This WAN breakout board makes it easy to connect to your microcontroller via UART, simplifying the process of adding LoRa connectivity to your project. It’s ideal for creating wireless sensor networks, remote monitoring systems, and automation setups where long-distance communication is essential. Compact, efficient, and high-performing, this LoRa RF transceiver breakout board combines low power consumption with strong anti-interference capabilities — perfect for both beginners and professionals building smart wireless applications. Features: Long-Range Communication: Based on SX1278 LoRa technology, enabling stable data transmission up to several kilometers. High Sensitivity & Low Power: Offers ultra-low power consumption, ideal for battery-powered IoT and WAN applications. Strong Anti-Interference: Reliable performance even in noisy environments, ensuring consistent communication. UART Interface: Simple serial communication for easy integration with Arduino, ESP32, and other microcontrollers. Compact & Durable Design: Lightweight breakout board design fits perfectly into wireless sensor and automation projects. Wide Application Support: Perfect for LoRa WAN networks, remote monitoring, telemetry, smart farming, and industrial IoT.

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

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 MCP9600 I2C Thermocouple Amplifier Breakout Board The SmartElex MCP9600 I2C Thermocouple Amplifier Breakout Board is a high-precision temperature sensing module designed for effortless integration into your projects. Powered by the MCP9600 chip, this board reads both ambient and thermocouple temperatures with a fine resolution of 0.0625ºC and an accuracy of ±1.5ºC. It features an easy-to-use I2C interface, eliminating the need for soldering or voltage conversion. The onboard screw terminals allow quick thermocouple connections, making it suitable for diverse applications — from monitoring kitchen appliances to controlling industrial furnaces. With four configurable temperature alerts and low-power modes, the MCP9600 breakout not only enhances accuracy but also optimizes power efficiency for portable or embedded systems. Features: MCP9600: Thermocouple Amplifier Uses an I2C interface. Temperature Range: -200ºC to 1350ºC. Operating voltage range is 2.7V to 5.5V. Four Onboard Temperature Alerts Resolution: 0.0625ºC. Screw Terminal Connector ADDR Jumper for changeable I2C addresses (the default address is 0x60). 2 Molex PicoBlade Connectors