125KHz EM4100 RFID Card Read Module

HX203D Smart-ID Chip Card Reader This HX203D card reader can read RFID card serial numbers and output to your computer according to the specified format, then management software derives many more functions. This RFID card reader is a simple, fast-read card. Belong to standard HID devices do not need to install the driver and can be read in any number, this function is suitable for extended functionality in existing software, without any modification to the original software. Check out our entire range of IOT & Wireless Applications: Access control Security needs. Time attendance Inventory Management Asset Tracking

DFRobot Gravity 7/24 Industrial Analog pH Sensor Meter Kit for Arduino The DFRobot Gravity 7/24 Industrial Analog pH Sensor Meter Kit for Arduino is a high-precision Analog pH Sensor designed for professional and industrial applications requiring continuous pH monitoring. This Arduino pH Sensor uses an industrial-grade glass membrane electrode with low impedance, delivering fast response, excellent thermal stability, and stable performance over long periods. It supports a full measurement range of 0 pH to 14 pH with linear voltage output, ensuring accurate and reliable readings. The sensor integrates easily through a BNC connector and PH2.0 interface, allowing direct connection to any Arduino analog input. Its reference system, based on Ag/AgCl gel electrolyte with a PTFE membrane, provides strong anti-pollution characteristics and prevents clogging, making it an ideal industrial pH sensor for Arduino for water treatment systems, environmental monitoring, and laboratory analysis. Attention: The probe's bottle top contains protective fluids (3.3mol/L KCL). Even if the bottle cap is tightly fastened, some protective liquid may leak around it, resulting in white crystals. However, as long as the bottle top contains protective liquid, the probe's life and accuracy will be unaffected. Please use it with confidence. It is recommended that the white crystals be returned to the bottle cap's protective liquid. Features Industrial-grade Analog pH Sensor for accurate measurement Compatible with Arduino and other microcontrollers Measures pH range from 0 to 14 Fast response with high stability BNC connector for secure sensor connection Plug-and-play PH2.0 analog interface Built-in power indicator LED Suitable for long-term online monitoring Low maintenance and long sensor life Ideal for water quality and lab applications Applications Water Quality Surveillance Aquaculture

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

5V WiFi Smart Relay Module for IoT & DIY Projects The 5V WiFi Relay Module is a smart control board that lets you switch electrical devices on and off using a WiFi connection. It works with standard 5V power and can be connected to home networks, allowing remote control of lights, fans, appliances, and other devices through your smartphone or automation system. This module is designed for easy integration with DIY electronics and smart home projects. It provides reliable switching performance and can be used in both residential and hobby automation setups. Whether you’re building a custom smart switch or adding wireless control to your gadgets, the 5V WiFi Relay Module offers a simple and flexible way to make your devices connected and controllable over WiFi. Features: Operates on 5V power supply for easy integration Enables wireless ON/OFF control of electrical devices over WiFi Suitable for smart home and IoT automation projects Supports remote switching via mobile app or automation system Reliable relay-based output for controlling loads safely Compact module design for DIY electronics and embedded systems Ideal for controlling lights, fans, pumps, and appliances

SmartElex DS3232 RTC (Real Time Clock) Breakout Module The SmartElex DS3232 RTC Breakout Module is a reliable DS3232 RTC module designed for accurate and long-term timekeeping in electronics and IoT projects. With an integrated crystal oscillator and temperature-compensated circuitry, it maintains precise date and time even under changing environmental conditions. This real-time clock module supports I²C communication, making it simple to interface with popular microcontrollers for applications such as data logging, digital clocks, alarms, and automation systems. A coin cell battery backup keeps the clock running during power loss, while its low power consumption and stable performance make it ideal for projects that demand exact timing and consistent operation over years. Features: Integrated crystal for accurate timekeeping. Temperature correction to reduce drift. Compact design that works well with breadboards. Works with I²C interface for microcontroller integration. Includes a coin cell battery backup for uninterrupted operation. Fully constructed and tested module ready for speedy deployment. Compatible with Arduino, Raspberry Pi, and other platforms. Low power usage results in longer battery life.

SmartElex 12V 3A 8 Channel Signal Relay Module The SmartElex 12V 3A 8 Channel Signal Relay Module is a reliable control solution designed to switch multiple electrical devices using low-power control signals. It allows users to safely manage higher-voltage or higher-current loads without directly connecting them to sensitive control circuits. This module is suitable for students, makers, engineers, educators, and startups working on embedded systems, automation projects, and control applications that require dependable multi-channel switching. This 8-channel relay module is ideal for robotics, IoT systems, home and industrial automation, and advanced prototyping where several devices need to be controlled independently. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32 to control lights, motors, pumps, relays, or other external equipment. The straightforward design and consistent performance make it easy to integrate into both experimental setups and finished products, supporting safe and efficient control across a wide range of applications. Features: 8-channel relay module for controlling multiple devices independently Operates on 12V, suitable for automation and control systems Supports up to 3A load current per relay channel Electrical isolation between control signals and load circuits Compatible with Arduino, Raspberry Pi, ESP32, and other controllers Compact board design with LED indicators for channel status

Cytron SHIELD-3AMOTOR 1.2A Dual Channel 7V–30V DC Motor Driver Shield for Arduino The Cytron SHIELD-3AMOTOR is a high-performance, dual-channel DC motor driver shield designed for Arduino users who need reliable and efficient motor control. Supporting motor voltages from 7V to 30V and delivering up to 3A peak and 1.2A continuous current per channel, this shield is ideal for robotics, automation, DIY RC vehicles, and mechatronics projects. Its compatibility with Arduino UNO, Mega, Leonardo, Zero, 101, and other popular boards makes it a plug-and-play solution for both beginners and advanced makers searching for powerful motor-driving capabilities. Built using the DRV8871 motor driver IC, the Cytron SHIELD-3AMOTOR supports both Signed Magnitude and Locked Anti-Phase control modes via an easy DIP switch selector. Additional features such as current limit protection, stackable headers, quick-test pushbuttons, and direct connectors for the LSS05 auto-calibrating line sensor make this shield perfect for building reliable robot platforms, line-followers, and dual-motor systems. With strong motor handling and seamless Arduino integration, this Cytron shield makes high-current motor control simple, safe, and efficient. Features: Dual-channel brushed DC motor driver shield designed for full Arduino compatibility. Supports 7V–30V motor voltage, suitable for a wide range of DC motors. Handles 3A peak and 1.2A continuous current per channel, ideal for medium-power robotic applications. Built-in current limit protection for safer motor operation. Compatible with 3.3V and 5V logic input, supporting various Arduino boards. DRV8871 IC ensures smooth, efficient, and reliable motor control. Selectable control modes: Signed Magnitude and Locked Anti-Phase via DIP switches. Stackable header pins for easy integration with additional shields. Quick-test switches provided for rapid motor testing on both channels. Includes dedicated connector for Cytron LSS05 Line Sensor, ideal for line-following robots. (Note: No polarity protection for motor supply input - connect with care.)

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 BX604 PIR Motion Sensor Module The SmartElex BX604 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 electronic systems by triggering actions only when motion is present, improving efficiency and reducing unnecessary power usage. This module is suitable for students, makers, engineers, educators, and startups who need a dependable motion sensing solution for electronics projects, learning kits, and prototype development. This PIR motion sensor module is widely used in robotics, IoT applications, security systems, and home or industrial automation projects where accurate motion detection is required. It can be easily interfaced with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick integration into working systems. The wide detection coverage and stable performance make it ideal for applications like motion-activated lighting, alarm systems, smart monitoring devices, and interactive electronic projects. Features: Passive infrared (PIR) sensor for reliable human motion detection Detects movement by sensing changes in infrared radiation Wide detection angle for broader area coverage Long sensing range suitable for security and automation use Low power consumption for battery-operated projects Compatible with Arduino, Raspberry Pi, ESP32, and similar boards

SmartElex DRV8825 Stepper Motor Driver Module with Aluminum Heat Sink The SmartElex DRV8825 Stepper Motor Driver Module with Aluminum Heat Sink is a compact and efficient solution for controlling bipolar stepper motors with high precision. Built around the trusted TI DRV8825 IC, it supports microstepping up to 1/32 step, enabling smoother motion and finer positional accuracy in applications like 3D printing, CNC machining, and robotics. The module can deliver up to approximately 2.2A peak current with proper cooling, while the integrated aluminum heat sink ensures effective thermal management during continuous operation. Its adjustable current limiting feature protects the motor and driver, improving overall system reliability. With a simple STEP and DIR interface, the module easily integrates with popular platforms such as Arduino, ESP32, and Raspberry Pi, making it an excellent choice for both DIY enthusiasts and professional motion control systems. Features: Based on the TI DRV8825 microstepping bipolar stepper motor driver. Onboard adjustable current limiting potentiometer Supports microstepping up to a 1/32 step. Simple STEP/DIR control interface. Thermal shutdown, overcurrent, and undervoltage protection. Works with 3.3 V and 5 V logic systems. Compact breakout board with an aluminum heat sink for improved cooling.

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 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

SmartElex Single Cell MPPT Solar Charger for LiPo Battery SmartElex Single Cell MPPT Solar Charger for LiPo Battery is designed to efficiently charge a single-cell LiPo battery using solar panels by extracting maximum power under varying sunlight conditions. This MPPT solar charger uses Maximum Power Point Tracking to optimize solar energy harvesting, making it a practical choice for students, hobbyists, engineers, educators, and startups working on renewable energy systems or off-grid electronics. It helps solve the common issue of inconsistent solar charging by maintaining stable charging performance even when light levels fluctuate. This solar LiPo charger module integrates easily with microcontroller platforms like Arduino, Raspberry Pi, and ESP32, making it suitable for IoT devices, autonomous sensor nodes, outdoor robots, and portable energy projects. It is ideal for prototyping solar-powered systems, automation setups, and remote monitoring applications where reliable charging is essential. With its compact size and stable charging algorithm, it provides a dependable foundation for building energy-efficient and self-sustaining electronics powered directly by the sun. Features: MPPT charging algorithm for maximum solar energy utilization Designed for charging single-cell LiPo batteries from solar panels Maintains stable charging even with fluctuating sunlight Ideal for off-grid and renewable energy-based electronics Compatible with Arduino, Raspberry Pi, ESP32, and IoT devices Compact module for portable, outdoor, and self-sustaining projects

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

Waveshare 3.5inch Capacitive Touch LCD IPS Display Module 320×480 The Waveshare 3.5-inch Capacitive Touch LCD IPS Display Module is a compact yet powerful display solution featuring a 320 × 480 pixel resolution that delivers crisp visuals and excellent clarity. Designed with an IPS panel, it offers wide viewing angles and consistent color performance, making it ideal for graphical interfaces and interactive applications. The module integrates the ST7796S display driver for reliable display control and the FT6336U capacitive touch controller for accurate, multi-touch responsiveness. Optimized for embedded development, this 3.5 inch LCD Raspberry Pi display is perfectly suited for Raspberry Pi projects, control panels, and custom HMI applications where space, touch precision, and visual quality matter. Features: 320×480 resolution, 262K colors, clear and colorful displaying effect High touch screen transmittance, fast response and long lifetime Embedded with ST7796S driver chip and FT6336U capacitive touch control chip, using SPI and I2C communication respectively, minimizes required IO pins Onboard TF card slot for storing more pictures, videos, music, etc. Adapting 15PIN connector and 18PIN FPC slot for connecting the LCD module to the host board Onboard voltage translator, compatible with 3.3V / 5V operating voltage Comes with online development resources and manual (examples for Raspberry Pi / ESP32 / Raspberry Pi Pico / Arduino) SPI and I2C Control Interfaces: Pin Description 15PIN Pin No. 18PIN Pin No. VCC Power (3.3V / 5V input) 1 1 3V3 Power (3.3V input) 2 NC GND Ground 3 3 MISO SPI MISO pin 4 6 MOSI SPI MOSI pin 5 5 SCLK SPI CLK pin 6 4 SD_CS TF card chip selection, low active 7 10 LCD_CS LCD chip selection, low active 8 9 LCD_DC LCD data/command selection (high for data, low for command) 9 7 LCD_RST LCD reset pin, low active 10 8 LCD_BL LCD backlight pin 11 2 TP_SDA Touch panel data pin 12 14 TP_SCL Touch panel clock pin 13 13 TP_INT Touch panel interrupt pin 14 15 TP_RST Touch panel reset pin, low active 15 12