SmartElex Single Cell MPPT Solar Charger for LiPo Battery

Cytron Maker Reflect IR Reflectance Sensor for Beginner The Cytron Maker Reflect IR Reflectance Sensor is a compact and beginner-friendly module designed to help learners understand how infrared reflectance works in robotics and automation. Using an IR LED and a high-sensitivity phototransistor, it measures how much IR light bounces back from a surface and generates an analog voltage that’s easy for any microcontroller to read. This makes it perfect for exploring concepts like surface detection, black-and-white line following, and reflectivity measurement. Designed by Cytron with simplicity in mind, this sensor is ideal for kids, students, and makers stepping into DIY robotics projects. Its ultra-small size and centered mounting hole allow it to fit even in tight robot designs, while its 3.3V and 5V compatibility ensures smooth use with Arduino, Raspberry Pi, and all common controllers. Whether you're building a line follower, Sumo bot, maze robot, or encoder-based mechanism, the Maker Reflect delivers reliable IR performance with minimal setup. Features: Works as a hands-on IR reflectance sensor that uses an IR LED + phototransistor to measure surface reflectivity for reliable detection. Helps beginners learn analog sensing, line detection, object presence, and robot navigation, building strong STEM fundamentals. Built with safe, durable Cytron components, ensuring stable performance even in beginner-level DIY robotics projects. Fully compatible with 3.3V and 5V systems, making it easy to interface with Arduino, Raspberry Pi, microcontrollers, and robotics platforms. Offers a sensing distance of 1mm to 40mm at 5V (ideal for black/white surface detection and line following). Provides analog voltage output, allowing smooth interpretation of different surface colors and reflectivity. Compact size of 18.1mm × 8.4mm × 4.2mm, with a centered mounting hole for accurate positioning at the front of robots. Suitable for school projects, robotics clubs, and maker experiments - perfect for line followers, Sumo robots, maze solvers, and encoder wheels. Makes a great STEM learning gift for young robotics enthusiasts and beginners exploring IR sensors.

SCD40 I2C CO Temperature & Humidity Sensor Breakout Module - 7Semi The 7Semi SCD40 is a compact sensor breakout based on Sensirion’s advanced photoacoustic NDIR technology. It accurately measures CO concentration from 400 ppm to 40,000 ppm, along with ambient temperature and humidity. Ideal for air quality monitoring, HVAC systems, and IoT applications. It communicates over the I²C interface and is compatible with most microcontrollers. With low power consumption, long-term stability, and minimal recalibration requirements, the SCD40 is well-suited for portable and embedded systems requiring reliable environmental data. Features Photoacoustic CO Sensing: Uses advanced photoacoustic infrared technology for high-precision CO measurement. 3-in-1 Environmental Monitoring: Simultaneously tracks CO levels, temperature, and humidity for a complete atmospheric overview. Wide CO Detection Range: Measures concentrations from 400 ppm to 40,000 ppm, with optimal accuracy in the 400–2000 ppm range. High Accuracy: Offers a precision of ±(40 ppm + 5%), making it ideal for critical monitoring applications. Low Power Consumption: Consumes only 17 mA at 5s intervals and 0.5 mA at 5-minute intervals, perfect for battery-powered projects. Plug-and-Play Ready: Factory-calibrated and ready for immediate use—no manual calibration required. I2C Interface: Compatible with Arduino, Raspberry Pi, ESP32, STM32, and other popular microcontrollers via I2C. Compact Design: Small, robust module fits easily into embedded systems and space-limited enclosures. SCD40 carbon dioxide sensor Breakout I2C Arduino Connections

7Semi ENS160 Air Quality Sensor I2C Probe (ES-12183) The 7Semi ENS160 Air Quality Sensor I2C Probe (ES-12183) is a compact and ready-to-use air quality sensing module built to measure indoor environmental conditions. It uses the advanced ENS160 multi-gas sensor to detect volatile organic compounds (VOCs) and other indoor pollutants, helping you understand the quality of the air around you. The probe provides clean, processed digital outputs that make monitoring easy. This sensor communicates over a standard I2C interface and works at 3.3 V, making it simple to connect to popular controllers like Arduino, ESP32, or Raspberry Pi. With features like long-term stability, low power use, and reliable performance across a range of temperatures and humidity levels, it’s a great choice for smart home systems, air purifiers, HVAC monitoring, and other environmental projects. Features: Advanced ENS160 multi-gas sensor for indoor air quality monitoring Detects VOCs and air quality levels for healthier environments I2C digital interface for simple integration with microcontrollers Factory-calibrated sensor for reliable and consistent readings Low power consumption, suitable for continuous monitoring Compatible with Arduino, ESP32, Raspberry Pi, and IoT systems 7Semi I2C Wire Color Code

7Semi IMU BMI270 Accelerometer & Gyroscope Breakout - STEMMA QT / Qwiic Compatible The 7Semi IMU BMI270 Accelerometer and Gyroscope Breakout is a high-performance motion-sensing module built around Bosch Sensortec’s powerful BMI270 IMU. Designed for next-generation wearable devices, robotics projects, and motion-tracking applications, this sensor delivers exceptional accuracy, ultra-low power consumption, and industry-leading self-calibrating gyroscope technology. With features like motionless CRT (Component ReTrimming), it automatically compensates for soldering drift, ensuring reliable long-term performance with minimal sensitivity error. STEMMA QT / Qwiic connectors, integrating the BMI270 into your microcontroller or IoT system is effortless, no soldering, no hassle. This breakout also supports advanced gesture recognition, activity detection, step counting, and context awareness, making it ideal for smart wearables, VR projects, and embedded motion-tracking solutions. Whether you’re building smart eyewear, intelligent shoes, robotics platforms, or fitness devices, the BMI270 ensures smooth, precise, and real-time inertial data. Features: Supports 3.3V and 5V operation for compatibility with a wide range of microcontrollers. Includes a 16-bit 3-axis accelerometer with selectable ±2g/4g/8g/16g ranges for flexible performance. Equipped with a 16-bit 3-axis gyroscope supporting ±125 to ±2000 dps for accurate angular sensing. Features Bosch’s self-calibrating gyroscope (CRT) to eliminate post-soldering drift and maintain precision. Supports rich motion and gesture detection, including step counting, activity recognition, wrist flick, any-motion, no-motion, and more. STEMMA QT / Qwiic interface provides plug-and-play connectivity for easy prototyping and integration. Ideal for wearables, robotics, AR/VR systems, motion tracking, smart textiles, and IoT devices. BMI270 Accelerometer and Gyroscope Breakout Dimensions: BMI270 Accelerometer and Gyroscope Breakout Pinout: BMI270 Breakout Arduino Connection:

ACEBOTT QE201 Wooden Board for ESP32 Basic Starter Kit (Expansion Pack) The ACEBOTT QE201 Wooden Board for ESP32 Basic Starter Kit (Expansion Pack) is a practical learning expansion designed to enhance the core ESP32 starter kit with real-world, hands-on projects. Built with wooden structural assembly support, this expansion enables users to create 37+ interactive projects such as a Smart Butterfly, Electronic Piano, Smart Watermelon Fan, Smart Barrier, and Smart Trash Can. It is fully compatible with Arduino and Blockly programming, making it ideal for beginners who want to learn electronics, coding, and automation in a simple and humanized way. The main core function of this expansion pack is to transform basic electronic concepts into physical smart models, helping users understand how embedded systems work through engaging and easy-to-build projects. Features: Supports 37+ practical expansion projects for ESP32 learning Designed for wooden structural assembly to build physical smart models Compatible with ACEBOTT QE201 ESP32 Basic Starter Kit Works with both Arduino and Blockly programming platforms Includes smart applications like Smart Butterfly, Electronic Piano, Smart Fan, Smart Barrier, Smart Trash Can Beginner-friendly design for easy assembly and understanding Humanized learning approach for interactive STEM education Suitable for students, hobbyists, and training institutes

SmartElex Micro ISM330DHCX 6DoF IMU Sensor The SmartElex Micro ISM330DHCX 6DoF IMU Sensor is a compact motion-sensing module that combines an accelerometer and gyroscope to measure movement, orientation, and rotation. It helps users track motion data accurately in three-dimensional space, making it useful for students, hobbyists, engineers, and educators working on robotics, automation, and motion-based electronics. This IMU breakout board simplifies motion tracking in projects where stability, responsiveness, and precision are important, without requiring complex circuit design or calibration setups. This 6DoF IMU sensor is commonly used in self-balancing robots, gesture-controlled systems, IoT wearables, drones, and embedded automation projects that rely on movement or orientation feedback. It integrates smoothly with popular development platforms like Arduino, Raspberry Pi, and ESP32, making setup and data processing beginner-friendly and efficient. With dependable performance and straightforward compatibility, the SmartElex Micro ISM330DHCX is a practical choice for prototyping, academic learning, and product development where reliable motion tracking and sensor fusion are essential. Features: 6DoF IMU with built-in accelerometer and gyroscope for motion tracking Measures linear acceleration and rotational movement in real time Compact breakout board designed for easy integration in projects Compatible with Arduino, Raspberry Pi, ESP32, and similar platforms Ideal for robotics, drones, wearables, and gesture-based control systems Reliable module for prototyping, STEM learning, and embedded development

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 STTS22H Temperature Sensor Module The SmartElex STTS22H Temperature Sensor Module is a compact and reliable temperature sensor module designed for accurate digital temperature measurement. It helps users monitor temperature precisely in electronic systems without complex circuit design, making it ideal for students, makers, educators, and engineers working on sensing and monitoring projects. With its breakout board design, this digital temperature sensor is easy to handle and well suited for learning, testing, and early-stage product development. This sensor module is commonly used in IoT devices, robotics systems, automation setups, and data logging applications where consistent temperature monitoring is required. It integrates easily with popular platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick connection and smooth communication for prototyping and experimentation. With dependable performance and simple integration, the SmartElex STTS22H breakout board is a practical choice for educational labs, DIY projects, and embedded development applications. Features: Digital temperature sensor module with stable and accurate readings Breakout board design for easy handling and quick prototyping Simple digital interface for smooth data communication Compatible with Arduino, Raspberry Pi, and ESP32 platforms Ideal for IoT, robotics, and automation projects Suitable for education, DIY electronics, and embedded development

SmartElex Atmospheric Sensor Breakout – BME280 Temperature, Humidity & Pressure Sensor Module The SmartElex Atmospheric Sensor Breakout is a compact and reliable module designed to measure temperature, humidity, and air pressure with high accuracy. Built around the powerful BME280 sensor, this 3-in-1 sensor module makes it easy to monitor environmental conditions in real time. Perfect for weather stations, IoT systems, and smart home devices, this environmental sensor breakout delivers precise readings while consuming very little power. It supports both I2C and SPI communication interfaces, making it simple to connect with popular boards like Arduino, ESP32, or Raspberry Pi. Whether you’re building an automation project or a DIY weather monitor, this temperature, humidity, and pressure sensor breakout provides reliable performance and easy integration. It’s a great choice for makers, students, and developers who want accurate environmental data in a small and efficient module. Features: 3-in-1 Environmental Sensor: Accurately measures temperature, humidity, and barometric pressure using the BME280 sensor. High Precision Readings: Provides stable and accurate data for weather monitoring and environmental analysis. I2C & SPI Compatible: This I2C SPI environmental sensor module easily interfaces with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Compact Design: Small and lightweight, making it perfect for embedded systems, IoT devices, and portable applications. Low Power Consumption: Efficient sensor design ensures reliable long-term use in battery-powered projects. Easy to Integrate: Ideal for beginners and professionals working on DIY weather stations, home automation, or environmental monitoring systems.

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

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 BX404 Digital PIR Motion Sensor The SmartElex BX404 PIR Motion Sensor is a compact and reliable BX404 PIR Motion Sensor designed to detect human movement using passive infrared technology. It helps users sense motion accurately by detecting changes in body heat, making it useful for security, automation, and energy-saving applications. This passive infrared sensor is ideal for students, makers, educators, engineers, and startups looking to add motion detection to their electronic projects in a simple and effective way. The sensor works smoothly with popular platforms such as Arduino, Raspberry Pi, and ESP32, allowing easy integration into robotics, IoT devices, and automation systems. Its stable digital output makes it suitable for applications like smart lighting, intrusion alarms, occupancy detection, and DIY prototypes. With easy interfacing and dependable performance, this sensor enables quick development of motion-based solutions for real-world electronics projects. Features: Accurate motion detection using passive infrared sensing Designed for reliable human movement detection Digital output for easy interfacing with controllers Compatible with Arduino, Raspberry Pi, and ESP32 Low power operation for continuous monitoring Ideal for security, automation, and smart electronics projects

SmartElex PCA9546 4-Channel I2C Multiplexer Compatible with TCA9546A SmartElex PCA9546 4-Channel I2C Multiplexer is designed to simplify communication management when working with multiple I2C devices that share the same address. This compact module helps prevent signal conflicts by allowing users to connect and control up to four separate I2C buses from a single master device. It’s an ideal solution for students, makers, engineers, educators, and startups who are building projects where multiple sensors or modules need to coexist without addressing limitations or communication errors. Compatible with popular development platforms like Arduino, Raspberry Pi, and ESP32, this PCA9546 I2C multiplexer works as a practical I2C bus expander for robotics, IoT systems, automation projects, and prototype development. It offers a stable, plug-and-play approach to expanding I2C networks, making it easy to integrate sensors, displays, and controllers into both simple and advanced builds. Whether you are creating a multi-sensor environment, debugging complex circuits, or scaling an existing project, this module provides clear routing and dependable performance to streamline development. Features: Enables connection of up to four independent I2C device channels Prevents address conflicts by isolating I2C buses when needed Based on PCA9546 IC and compatible with TCA9546A devices Ideal for expanding I2C networks in multi-sensor projects Works with Arduino, Raspberry Pi, ESP32, and similar controllers Simple control through I2C commands for channel selection

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

SmartElex TPS61040 12V Boost Converter Module SmartElex TPS61040 12V Boost Converter Module is designed to step up lower DC voltages to a stable 12V output, making it an ideal solution when your circuit requires a higher operating voltage than the available power source. This 12V boost converter is especially useful for students, hobbyists, engineers, educators, and startups working with battery-powered electronics or low-voltage microcontroller projects. It solves the challenge of powering 12V devices from compact power supplies like 3V or 5V inputs, without needing bulky transformer-based solutions. As a 3V to 12V boost converter, it integrates easily with platforms like Arduino, Raspberry Pi, ESP32, and other development boards, making it highly suitable for robotics, IoT nodes, portable gadgets, automation circuits, and prototyping environments. Its compact design and reliable output make it a practical choice for powering sensors, actuators, communication modules, and small peripherals that need a 12V line. This module helps builders maintain efficiency and portability in their designs while ensuring stable performance across a range of real-world applications. Features: Steps up lower DC input to a stable 12V output Based on the TPS61040 high-efficiency boost converter IC Enables 12V operation from 3V, 5V, or other low-voltage sources Ideal for battery-powered and portable electronics Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Suitable for sensors, small modules, IoT devices, and automation projects