7Semi Compact FT232 USB-C UART (TTL) Communication Module

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.

CNC Shield + UNO R3 Board compatible with Arduino + 4xDRV8825 Driver Kit Arduino Uno is an open-source microcontroller used by students and hobbyists entering the world of DIY electronics and automation, The Arduino Uno can be used for any application including being the brains of your next DIY 3D printer and/or CNC router The CNC Shield V3.0 allows you to build an engraving machine, 3D printer, mini CNC and other similar devices using your Arduino. It is designed as a shield and can plug on top of an Arduino requiring no external connections and wiring. Along with that, the CNC shield allows you to control up to four stepper motors by mounting on 4 stepper motor drivers, included with this kit The DRV8825 provides an integrated motor driver solution for printers, scanners, and other automated equipment. The device has two H-bridge and is intended to drive a bipolar stepper motor. Features: UNO R3 Board: The main microcontroller board compatible with Arduino. CNC Shield: An expansion board that allows for easy connection and control of stepper motors. 4x DRV8825 Stepper Motor Drivers: High-performance drivers for controlling stepper motors. Micro-Stepping: Supports micro-stepping settings for precise control of stepper motors. GRBL Compatibility: Compatible with GRBL firmware, which is widely used for CNC control. Voltage Range: Operates on 12-36V DC. Heat Sinks: Included for cooling the stepper motor drivers. USB Cable: For connecting the UNO R3 board to a computer. 40-Pin Row Needles: For additional connections. Applications: CNC Machines: Used for controlling stepper motors in CNC milling, engraving, and cutting machines. 3D Printers: Essential for driving stepper motors in 3D printers, ensuring precise layer deposition and movement. Laser Cutters: Controls stepper motors in laser cutting machines for accurate cutting and engraving. Robotics: Ideal for robotics projects requiring precise motor control, such as robotic arms and automated guided vehicles (AGVs). X-Y Tables: Used in X-Y tables for accurate positioning and movement in various industrial applications. Pick-and-Place Devices: Employed in pick-and-place machines for accurate component placement in electronics manufacturing. Labeling Machines: Used in labeling machines for precise label application. Pinout Diagram for the Arduino Uno Microcontroller Applications of the Kit The kit can be used to create custom 3D printers, scanner, CNC mills and other automated equipment applications

TL-Smoother module for 3D printer motor drivers V1.0 A smoother module for stepper driver motor is an add-on module for stepper motors of 3D Printers. It is useful for a softer movement in Delta Style 3D Printer as when using DVR8825 or step and drives and A4988/2 driver unit. TL smoothers are popular little printed circuit boards (PCBs) that are often used in FDM 3D printers to not surprisingly, smooth out the look of prints. In other words, they reduce surface artifacts caused by irregular stepper motor motion, often dubbed “zebra stripes,” “salmon skin,” etc. These smoothers are often sold as 4- and 8-diode variants, with the 8-diode ones (pictured above) offering a stronger smoothing effect. They plug into any 3D printer between the stepper drivers and the stepper motors, working their electrical “magic” without any other setup needed. Their low cost, plug-and-play functionality, and seemingly magical effect have made them quite beloved, albeit slightly controversial. The board provides flyback diodes (freewheeling diodes) for the motor outputs so that they are also protected against induction voltages in the unpowered state of the driver. You will get smoother movement. Features: Suitable for all FDM types of 3D printers Lower vibration, lower noise, and smoother result. Smoother movement especially on the delta-style 3Dprinter under DVR8825 stepper drivers and A4988/2 drivers.

SmartElex HTU21D-F Temperature and Humidity Sensor with Breakout Board The SmartElex HTU21D-F Temperature and Humidity Sensor with Breakout Board is a compact and reliable temperature and humidity sensor designed for accurate environmental monitoring. It helps users measure ambient temperature and humidity digitally with stable output, making it suitable for students, makers, educators, and engineers working on sensing and monitoring applications. This digital temperature and humidity sensor is ideal for those who want dependable readings without complex circuitry, especially in learning, testing, and early product development environments. This I2C digital humidity sensor is widely used in IoT systems, weather monitoring projects, automation setups, and data logging applications where consistent environmental data is required. It integrates easily with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick setup and smooth communication through the I2C interface. With its breakout board design and reliable performance, the SmartElex HTU21D-F sensor is well suited for prototyping, robotics projects, and educational labs looking for a practical alternative to traditional sensors like SHT15 breakout boards. Features: Digital temperature and humidity sensor with stable and accurate readings I2C interface for simple and reliable data communication Compact breakout board for quick prototyping and testing Easy to use with Arduino, Raspberry Pi, and ESP32 platforms Suitable for IoT, automation, and environmental monitoring projects Ideal replacement option for older sensors like SHT15 breakout boards

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.

7Semi MCP23017 I2C to 16 IO Expander Breakout Board The 7Semi MCP23017 I2C to 16 IO Expander Breakout Board is designed to expand the digital I/O capability of microcontrollers using the trusted MCP23017 I2C IO Expander IC. It provides exactly 16 configurable GPIO pins over a single I2C bus, reducing wiring complexity while maintaining stable performance. Each pin can be independently set as input or output, and the onboard interrupt feature allows the controller to respond instantly to pin state changes. This MCP23017 Breakout Board is compact, easy to integrate, and ideal for applications such as home automation, robotics, industrial control panels, and any project that requires multiple digital inputs and outputs without consuming extra microcontroller pins. Features: 16 I/O Pins: Converts two signal pins into sixteen completely customizable I/O pins. Multi-board Expansion: For larger applications, stack up to 8 boards to provide up to 128 I/O pins. Configure I2C addresses by setting the A0, A1, and A2 jumpers. Dual Connectivity: Includes PH2.0 terminal and solder pad choices for simple connection. Wide Compatibility: Compatible with both 3.3V and 5V systems, ensuring platform versatility. Interrupt Support: The INTA and INTB interrupt pins are used for real-time signal handling. Development Resources: Includes detailed instructions and sample projects for Raspberry Pi, Arduino, STM32, and micro. Easy Integration: The I2C interface, combined with a 4Pin 2.0 mm JST connector, provides for an easy and flexible connection to any MCU.

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

Cytron CM4 Maker Board for Raspberry Pi The Cytron CM4 Maker Board is a powerful and reliable development board built around the Raspberry Pi Compute Module 4 (CM4), designed specifically for Pro Makers, hardware hobbyists, educators, and embedded developers. With its wide input voltage range, convenient power button, and multiple boot options - including microSD, NVMe SSD, and CM4 eMMC, this Cytron board gives makers complete flexibility in how they build, experiment, and deploy their Raspberry Pi projects. It also retains essential interfaces like Gigabit Ethernet, USB 2.0 ports, HDMI, CSI, and DSI, ensuring compatibility with Raspberry Pi HATs and common accessories. Cytron enhances the standard CM4 experience by adding practical maker-friendly features such as on-board RTC (PCF85063A), Grove ports, Maker Port, 10 GPIO status LEDs, a piezo buzzer with mute switch, and dedicated push buttons. Whether you are creating IoT prototypes, robotics systems, dashboards, or long-running automation projects, the Cytron CM4 Maker Board offers stability, bigger storage options, real-time clock capability, and the expandability required for advanced Raspberry Pi development. Features: The Cytron CM4 Maker Board supports a wide input voltage range through a 7–18V DC jack or 5V USB-C, making it adaptable for various maker setups. Cytron includes a convenient hardware power button, allowing safe shutdown and easy startup without needing terminal commands. The board supports multiple boot sources, including microSD, NVMe SSD (2230/2242), and onboard eMMC on CM4 for faster and more reliable storage. Includes all essential Raspberry Pi features like Gigabit Ethernet, 4× USB 2.0 ports, HDMI, CSI camera port, DSI display port, and 3.5mm audio out. Equipped with PCF85063A RTC, enabling real-time clock functionality even without an internet connection. Cytron adds maker-focused extras such as Grove ports, Maker Port, 10 GPIO LEDs, piezo buzzer, and push buttons for quick prototyping. Pinout Diagram:

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.

SmartElex RJ45 magjack Connector Breakout Board The SmartElex RJ45 MagJack Connector Breakout Board is a convenient module designed to make Ethernet connectivity accessible for custom electronics projects. It breaks out an RJ45 Ethernet jack with integrated magnetics, allowing users to interface network signals with development boards, prototypes, and embedded circuits without needing to design their own connector layout. This board is ideal for students, makers, engineers, educators, and startups who want to experiment with wired networking, communication protocols, or LAN-based control in robotics and IoT applications. This RJ45 MagJack breakout board is commonly used in IoT networks, automation systems, communication modules, and hardware prototypes that require Ethernet access for data transfer or device control. It can be used with platforms like Arduino, Raspberry Pi, ESP32, and other microcontroller boards that support Ethernet interfacing through additional hardware or modules. With reliable connectivity and a beginner-friendly breakout design, the SmartElex RJ45 MagJack Connector Breakout Board is a practical choice for testing, learning, and developing Ethernet-enabled electronic devices and embedded systems. Features: Breaks out an RJ45 MagJack Ethernet connector to easy-to-use pins Simplifies Ethernet interfacing for prototyping and custom circuits Integrated magnetics for stable network signal handling Compatible with Arduino, Raspberry Pi, ESP32 (with Ethernet support) Ideal for IoT, automation, LAN communication, and embedded systems Great for testing, learning, and building Ethernet-enabled devices

Cytron Maker UNO X – Arduino Compatible Development Board for Classroom The Cytron Maker UNO X is a beginner-friendly, classroom-ready Arduino-compatible development board designed to simplify STEM education. Equipped with built-in LEDs on every digital pin, a programmable push button, a piezo buzzer, and a powerbank-friendly design, it eliminates messy wiring and allows students to start coding instantly. This board is ideal for Arduino beginners, school STEM labs, coding clubs, training centers, and anyone learning microcontroller basics. With plug-and-play functionality and seamless compatibility with Arduino IDE, it delivers a smooth learning experience for educators and students alike. Created with the needs of teachers in mind, the Cytron Maker UNO X features an onboard half-size breadboard and perfboard for quick prototyping, making it easy to build hands-on electronics projects right out of the box. Powered by the ATmega328P, and complete with essential interfaces like UART, SPI, I2C, PWM pins, and analog inputs, this board is perfect for exploring coding, electronics, and robotics in a structured classroom setup. Whether for STEM workshops, school projects, or Arduino training programs, Maker UNO X provides an engaging, frustration-free learning experience. Features: Fully Arduino UNO-compatible board designed specially for classrooms and STEM beginners. Built-in LED indicators on every digital pin, allowing students to visualize code output instantly without wiring. Includes piezo buzzer, programmable push button, and powerbank-friendly operation for portable projects. Comes with an onboard perfboard prototyping area and a half-size breadboard to simplify hands-on experiments. Powered by the reliable ATmega328P microcontroller with 16MHz clock speed and full support in Arduino IDE. Offers 20 digital I/O pins, 6 PWM pins, 6 analog inputs, and communication interfaces (UART, SPI, I2C). Features 32KB Flash, 2KB SRAM, 1KB EEPROM, making it ideal for beginner programming and small-scale electronics projects. Uses a USB Micro-B interface with CH9340 USB-UART chip (note: not supported on Windows 7). Designed by Cytron to support educators - ensures faster learning with fewer wiring issues and more hands-on coding.

SmartElex NS612 PIR Motion Sensor Module The SmartElex NS612 PIR Motion Sensor Module is a passive infrared motion detection solution designed to sense human movement by detecting changes in infrared radiation. It helps automate systems by triggering actions only when motion is detected, reducing unnecessary power usage and improving system efficiency. This module is suitable for students, makers, engineers, educators, and startups working on electronics projects that require reliable and responsive motion sensing for security, automation, or interactive applications. This PIR motion sensor module is widely used in robotics, IoT devices, security systems, and home or industrial automation projects where motion detection is essential. It can be easily interfaced with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick integration into prototypes and working systems. The dependable performance and simple interface make it ideal for applications like motion-activated lighting, alarm systems, smart monitoring solutions, and embedded electronics projects. Features: Passive infrared (PIR) sensor for accurate human motion detection Detects movement by sensing changes in infrared radiation Long sensing range suitable for wider coverage areas Low power consumption for battery-powered applications Digital output for easy interfacing with microcontrollers Compatible with Arduino, Raspberry Pi, ESP32, and similar boards

Cytron URC10 Sumo Robot Controller R1.1 Arduino-Compatible Motor Driver Board The Cytron URC10 Sumo Robot Controller R1.1 is a powerful all-in-one robotics control board designed specifically for competitive sumo robot building. It combines an Arduino-compatible ATmega328P microcontroller, a dual 10A motor driver, and dedicated interfaces for ultrasonic, digital, and analog sensors - making it one of the most efficient and beginner-friendly solutions for robot builders. With support for 8V–25V DC motors, 30A peak current, and high-frequency PWM control, this controller ensures strong pushing power and fast maneuverability for 3kg sumo robot competitions. Cytron engineered the URC10 to simplify robot development by integrating essential hardware like built-in test buttons, motor output LEDs, onboard 5V/3.3V regulators, and a Micro-USB interface for programming. Whether you're designing autonomous systems, competitive sumo robots, or experimenting with robotics, the Cytron URC10 offers reliable performance, stable motor control, and easy sensor expansion for both beginners and advanced makers. Features: Designed specifically for up to 3kg sumo robot applications. Built around the Arduino-compatible ATmega328P microcontroller with Optiboot Bootloader. Integrated dual 10A continuous motor driver (30A peak per channel) for high-power brushed DC motors. Supports 8V–25V motor voltage for a wide range of robot motors. Features current limiting at 30A per channel for safe operation under heavy loads. Includes motor test buttons for quick verification without uploading code. Motor output status LEDs for easier debugging and inspection. Compatible with sign-magnitude and locked-antiphase PWM, supporting up to 20kHz frequency. Onboard 5V, 1A regulator and 3.3V, 500mA regulator for powering sensors and modules. Dedicated pins for motors, ultrasonic sensors, digital I/O, and analog sensors. Includes USB Micro-B + CH340 USB-serial system for easy programming upload. Provides 1× I2C port for additional modules. Compact design with dimensions 75.57mm × 99.7mm. Note: Reverse polarity protection is not included.

SmartElex 12V 7A Single Channel Power Relay Module The SmartElex 12V 7A Single Channel Power Relay Module is a dependable switching solution designed to control higher-power electrical loads using low-voltage control signals. It helps protect microcontrollers and sensitive electronics by providing proper isolation between the control circuit and the load side. This module is suitable for students, makers, engineers, educators, and startups who are working on control systems, automation projects, or embedded applications that require safe and reliable power switching. This single channel power relay module is ideal for robotics, IoT systems, home automation, and industrial control projects where devices such as motors, lights, pumps, or other electrical equipment need to be switched reliably. It can be easily interfaced with popular development platforms like Arduino, Raspberry Pi, and ESP32, making it convenient for both prototyping and final product integration. The simple design and consistent performance allow users to build stable control systems without added complexity. Features: Single channel power relay module for high-load switching Operates on 12V, suitable for automation and control systems Supports up to 7A load current for power applications Electrical isolation between control side and load side for safety Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Compact and durable design for easy integration into projects

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