Elecrow All-in-One Starter Kit for Arduino with 15 Sensors and 21 Lessons

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

Cytron 8-Channel RC Servo Controller Shield – 5V 5A Regulated Power for Arduino The Cytron 8-Channel RC Servo Controller Shield is designed for makers, robotics enthusiasts, and educators who need reliable, high-power servo control for Arduino projects. With its built-in 5V 5A switching regulator, this servo shield eliminates the usual power limitations that come with driving multiple RC servos. It seamlessly works with popular Arduino boards like Arduino UNO, Mega, CT-UNO, and more - making it an ideal solution for robotics, animatronics, humanoid robots, and automation systems. Keywords naturally included: Arduino servo shield, RC servo controller, 8-channel servo driver, robotics servo control. This shield allows you to control eight independent RC servos simultaneously, offering precise position and speed control using a simple UART interface. Each channel supports a wide 0.5ms–2.5ms pulse range, enabling full 180° servo rotation control for most RC servos. Whether you're building robotic arms, walking robots, pan-tilt systems, or classroom STEM models, this Cytron servo controller shield ensures smooth servo movements, stable power delivery, and user-friendly integration with Arduino. Features: Supports 8 independent RC servo channels, allowing simultaneous multi-servo control for robotics and automation projects. Built-in 5V/5A peak (4A continuous) switching regulator, enabling safe and stable servo operation without an external power module. Wide input voltage range from 7V to 25V, making it compatible with most robot power systems. Offers UART control (UC00A/UC00C and others supported), enabling activation, speed control, positioning, and optional position reporting. Generates precise servo pulses from 0.5ms to 2.5ms with a resolution of 0.25 µs for smooth and accurate motion. Fully compatible with Arduino logic level (5V) and supports Arduino UNO, Mega, CT-UNO, CT-ARM, etc. Stores UART baud rate in non-volatile memory (default 9600). Includes independent startup position command for each channel.

SmartElex 12V 3A 2 Channel Signal Relay Module The SmartElex 12V 3A 2 Channel Signal Relay Module is a compact and dependable solution for controlling multiple electrical loads using low-power control signals. It allows users to switch devices safely without directly handling higher voltages or currents, helping protect sensitive control circuits. This relay module is suitable for students, makers, engineers, educators, and startups working on embedded systems, control projects, and automation setups that require reliable dual-channel switching. This 2-channel relay module is ideal for robotics, IoT applications, home and industrial automation, and general prototyping where two devices need to be controlled independently. It can be easily interfaced with popular development platforms such as Arduino, Raspberry Pi, and ESP32, making it simple to control lights, motors, pumps, alarms, or other external equipment. The straightforward design and stable performance make it easy to integrate into both experimental projects and finished products, supporting consistent and safe operation. Features: Dual-channel relay module for controlling two devices independently Operates on 12V, suitable for automation and control systems Supports up to 3A load current per channel Provides electrical isolation between control and load circuits Compatible with Arduino, Raspberry Pi, ESP32, and other controllers Compact design with LED indicators for easy status monitoring

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 MCP4728 Quad DAC Module The 7Semi MCP4728 Quad DAC Module is a compact and reliable DAC module designed to convert digital signals into precise analog voltage outputs. Based on the MCP4728 IC, this digital-to-analog converter breakout board allows users to generate up to four independent analog outputs using simple I²C communication, making it an efficient solution for applications where microcontrollers lack sufficient analog output pins or require higher accuracy. This module offers easy integration with popular microcontrollers, stable performance, and flexible voltage output control, making it ideal for signal generation, sensor simulation, audio control, and calibration tasks. With its user-friendly design and dependable operation, it is well suited for students learning embedded systems, hobbyists building DIY electronics, and professionals developing prototypes or compact analog control systems. Features: Powered by the Microchip MCP4728 Quad DAC IC 12-bit resolution on all four DAC output channels (A–D) Onboard non-volatile EEPROM retains DAC settings after power-off I²C interface with Fast Mode support up to 400 kHz Low-power operation, ideal for battery-powered projects Compact 7Semi breakout with clearly labeled pinouts Supports LDAC and RDY pins for real-time DAC updates and monitoring Applications: Signal generation (sine, square, and triangle waveforms) Audio voltage control for synthesizers and mixers Programmable and adjustable reference voltage sources Lab instruments, testing, and control systems Industrial automation and process control applications Multi-channel analog and neural interface testing

SmartElex ILD213T Opto-isolator Breakout Board SmartElex ILD213T Opto-isolator Breakout Board is designed to provide reliable electrical isolation between two circuits, helping protect sensitive components from voltage spikes, noise, and ground loop issues. This opto isolator board uses the ILD213T optocoupler to safely transfer signals while keeping high-voltage and low-voltage sections separated. It is a practical solution for students, hobbyists, engineers, educators, and startups who need to interface microcontrollers with external hardware without risking damage to their development boards or sensors. This ILD213T optoisolator module is well-suited for robotics, IoT systems, industrial automation, and embedded prototyping where signal integrity and safety are important. It integrates easily with platforms like Arduino, Raspberry Pi, and ESP32, enabling secure communication with relays, motors, sensors, and noisy electrical equipment. By using this electrical isolation board, users can build more stable and durable projects, ensuring consistent performance and reduced troubleshooting due to interference or short circuits. Features: Provides electrical isolation between input and output circuits Based on the ILD213T optocoupler for reliable signal transfer Protects microcontrollers from voltage spikes and noise Helps prevent ground loops and interference issues Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Ideal for robotics, IoT, automation, and industrial interfaces

SmartElex RLS05 Line Follower Sensor The SmartElex RLS05 Line Follower Sensor is a compact and easy-to-use module designed to help robots detect and follow lines on a surface with accuracy. It is ideal for students, makers, educators, and early-stage engineers who are learning robotics or building simple autonomous systems. The sensor simplifies line detection by clearly identifying path contrasts, making it easier to develop reliable line-following behavior without complex circuit design. This sensor is widely used in line follower robots, educational robotics kits, and automation prototypes where precise path tracking is required. It integrates smoothly with popular platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick setup and experimentation. With dependable performance and straightforward interfacing, the SmartElex RLS05 enables users to focus on coding logic and robot movement, making it well suited for classrooms, labs, competitions, and DIY robotics projects in India. Pin Diagram: How to Calibrate SmartElex RLS05 Line Follower Sensor Step 1: Enter Calibration Mode Press the calibration button once or pull the CAL pin low for a few milliseconds. When three LEDs (D0, D2, and D4) turn ON, the module has entered calibration mode. Step 2: White Surface Reading Place the RLS05 module on a white surface and press the calibration button again. When two LEDs (D3 and D4) turn ON, the white surface values are read and saved in EEPROM. Step 3: Black Surface Reading Place the module on a black surface and press the calibration button once more. When three LEDs (D2, D3, and D4) turn ON, the black surface values are read and stored. Step 4: Select Line Following Mode To enable white line following, press the calibration button three times within one second. LEDs (D2, D3, and D4) will blink to confirm selection. To enable black line following, press the calibration button twice. LEDs (D0, D1, and D2) will blink to confirm the mode selection. Features: Five-channel line detection for accurate and stable line following Supports both black line and white line tracking modes One-time calibration with onboard EEPROM memory Easy calibration using onboard push button or CAL pin Compatible with Arduino, Raspberry Pi, and ESP32 platforms Ideal for robotics projects, educational kits, and automation prototypes

BNO085 9-DOF Orientation IMU Sensor Fusion Nano Breakout Board The BNO085 9-DOF Orientation IMU Sensor Fusion Nano Breakout Board is a powerful and compact motion-sensing solution designed for precise orientation and movement tracking. This BNO085 IMU Sensor combines a 3-axis accelerometer, gyroscope, and magnetometer with an advanced onboard sensor fusion engine that processes raw data into accurate orientation outputs in real time. By handling sensor fusion internally, it reduces processing load on the host microcontroller while delivering reliable heading, rotation, and motion data. With support for I2C and SPI interfaces, the board integrates easily into robotics, VR/AR devices, drones, and IoT systems that demand responsive and accurate motion feedback. Features: Advanced Sensor Fusion: 9-axis integration provides exact data outputs such as acceleration, angular velocity, and magnetic field strength. Low Power use: The ARM Cortex M0+ processor has been optimized for efficient energy use in portable devices. Versatile Compatibility: Backward compatible with BNO080, providing increased dependability through SPI compatibility fixes. Comprehensive Data Reporting: Supports a wide range of calibrated, uncalibrated, and raw data reporting. Enhanced Detection and Classification: Includes stability detection, motion detection, activity classification, and unique AR/VR rotation vectors. Developer-Friendly Interface: I2C interface allows for easy integration with numerous device designs.

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.

7Semi SHT40 Temperature & Humidity Sensor Breakout Board with 1.27mm Pitch The 7Semi SHT40 Temperature and Humidity Sensor Breakout is a compact, precision-engineered module built for applications where accurate environmental monitoring and ultra-low power consumption are crucial. Powered by Sensirion’s fourth-generation SHT40 sensor, it delivers highly reliable 16-bit temperature and humidity data while operating at just 3.3V. With its exceptionally low energy usage, fast response time, and robust ±1.8% RH and ±0.2°C accuracy, it’s an ideal upgrade for modern IoT, wearable, and battery-powered designs that demand consistent and stable performance. Designed for effortless integration, the board features a 1.27 mm pitch, a 4-pin header, and a versatile I2C interface with multiple address options, making it simple to deploy across embedded systems, development platforms, and prototype setups. Whether you're building smart home automation, industrial monitoring, or IoT environmental sensing projects, this SHT40 breakout ensures dependable, long-term operation even in demanding ambient conditions, helping engineers and makers achieve more accurate and energy-efficient data processing. Features: The SHT40 sensor delivers high-precision readings with ±1.8% RH humidity accuracy and ±0.2°C temperature accuracy for trustworthy environmental data. Designed for low-power applications, operating at under 0.15mA in low-power mode for extended battery life. Compact breakout board with a 1.27 mm pitch 4-pin header, making it ideal for tight-space electronic designs and fast prototyping. Provides a reliable I2C communication interface with multiple preconfigured addresses for easy use in multi-sensor networks. Efficient 3.3V operation ensures stable performance across microcontroller and IoT platforms. Fast response time of 8 seconds for real-time temperature and humidity tracking. Suitable for smart homes, industrial automation, IoT environmental nodes, air quality systems, and intelligent building applications.

7Semi SGP40 VOC Sensor Breakout for Indoor Air Quality 2.54mm Pitch (ES-12201) The 7Semi SGP40 VOC Sensor Breakout for Indoor Air Quality (ES-12201) is a compact sensor module designed to monitor indoor air quality by detecting volatile organic compounds (VOCs). It uses the reliable Sensirion SGP40 sensor, which helps track changes in air quality and provides useful data for healthier indoor environments. This breakout board features a standard I2C interface and 2.54 mm pitch pins, making it easy to connect with popular microcontrollers like Arduino, ESP32, and Raspberry Pi. Operating at low power and designed for simple integration, it is ideal for air quality monitors, smart home devices, and indoor environmental sensing projects. Features: Uses the Sensirion SGP40 sensor for reliable VOC detection Measures volatile organic compounds (VOCs) to assess indoor air quality I2C digital interface for easy connection with microcontrollers Standard 2.54 mm pitch pins for breadboard and prototyping use Low-power operation suitable for battery-powered and IoT projects Works with Arduino, ESP32, Raspberry Pi, and other development boards

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 LHI778 PIR Motion Sensor Module The SmartElex LHI778 PIR Motion Sensor Module is a passive infrared motion detection solution designed to sense human movement by detecting changes in infrared radiation. It helps solve the problem of automatic motion detection without continuous monitoring, making systems more energy efficient and responsive. This module is suitable for students, makers, engineers, educators, and startups working on electronics projects that require reliable motion sensing for control, security, or automation purposes. This PIR motion sensor module is widely used in robotics, IoT devices, security systems, and home or industrial automation projects where movement detection is required. It can be easily interfaced with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick integration into prototypes and functional systems. The simple interface and consistent performance make it ideal for applications like motion-activated lighting, intrusion detection, smart alarms, and interactive electronic projects. Features: Passive infrared (PIR) sensor for reliable human motion detection Detects movement by sensing changes in infrared radiation Low power operation suitable for battery-powered projects Digital output for easy interfacing with microcontrollers Compatible with Arduino, Raspberry Pi, ESP32, and similar boards Ideal for security systems, automation, and motion-activated applications

ATMEGA328P SMD IC for Arduino Nano/UNO – AVR Microcontroller The ATMEGA328P SMD IC (ATMEGA328P-AU) is a high-performance 8-bit AVR microcontroller widely used in Arduino Nano and Arduino Uno boards. Designed with picoPower technology, this SMD version includes 32KB ISP Flash, 2KB SRAM, 1KB EEPROM, multiple timers, USART, SPI, and I2C support. Making it ideal for embedded electronics, DIY projects, automation systems, and IoT applications. Its compact SMD package makes it suitable for custom PCB designs and small-form-factor projects. This microcontroller is fully compatible with Arduino IDE, making programming easy using an AVR programmer or bootloader. With features like 23 GPIO pins, 6-channel 10-bit ADC, watchdog timer, and flexible power-saving modes, the ATMEGA328P SMD IC delivers powerful performance while maintaining low power consumption. Whether you're building a new Arduino-compatible board or repairing an existing one, this IC provides reliability, stability, and seamless integration. Features: ATMEGA328P-AU SMD AVR microcontroller used in Arduino Nano/UNO boards. Supports 32KB Flash memory with read-while-write capability, 1KB EEPROM, and 2KB SRAM. Fully compatible with Arduino IDE; can be programmed using an AVR programmer. Offers 23 GPIO pins, 3 timers/counters, watchdog timer, and hardware serial communication. Integrated SPI, I2C (TWI), and USART interfaces for seamless connectivity. Operates on 1.8V to 5.5V, suitable for low-power and battery-based projects. 6-channel 10-bit ADC (8-channel in TQFP package) for accurate analog sensing. SMD design ideal for custom PCBs, compact electronics, and embedded projects.

SmartElex PCA9306 Logic Level Translator Breakout Module The SmartElex PCA9306 Logic Level Translator Breakout Module is a compact solution designed to shift signal voltages between different logic levels in electronic systems. This PCA9306 level translator helps connect components that operate at mismatched voltages, such as 1.8V, 3.3V, and 5V devices, without risking damage or unstable communication. It is ideal for students, hobbyists, engineers, educators, and startups who need a simple and reliable way to manage voltage differences in mixed-signal circuits, sensor interfaces, and microcontroller projects. With its bidirectional design, this voltage level translator supports seamless communication in both directions, making it suitable for robotics, IoT devices, automation systems, and embedded prototyping. It works smoothly with platforms like Arduino, Raspberry Pi, ESP32, and other controllers, allowing easy integration with modules, displays, and sensors. Whether used as a bidirectional level shifter for I2C communication or for general logic conversion, it offers a practical way to ensure safe and consistent signal translation across a range of development environments. Features: Based on the PCA9306 bidirectional level shifting IC Safely converts logic levels between 1.8V, 3.3V, and 5V devices Supports I2C and general-purpose bidirectional communication Protects components from voltage mismatches and signal damage Compatible with Arduino, Raspberry Pi, ESP32, and other controllers Compact breakout design for fast prototyping and integration