1CH 5v Relay Board High/Low Level Trigger with Optocoupler

Female to Female Jumper Wires (20cm) 40pcs These are 20cm 40pcs Female to Female Jumper wires, very Flexible and easily detachable. These jumper cables have 1Pin female to the 1pin female header with both ends. Also, it is compatible with 2.54 mm mil spacing pin headers. This cable is an electrical wire or group of them in a cable with a connector or pins at each end, which is normally for interconnecting the components of a breadboard or other prototype or test circuit, internally or with other equipment or components, without soldering. Individual Dupont Cables are fitted by inserting their end connectors into the slots provided in a breadboard, the header connector of a circuit board, or a piece of test equipment. Mostly Dupont cables are useful with Orange Pi, Banana Pi, Raspberry Pi , Arduino , and other mini PCs and development boards . It is very useful in the PCB project, PC motherboard, as well as Breadboard connections. Additionally, these jumper wires allows you to plug and unplug easily for prototyping and can be used over and over again. Check out the best selection of Jumper Wires . Applications: Raspberry Pi Arduino PCB projects Breadboard connections Get a complete set of M2M, M2F, F2F Jumper Wires Set for DIY projects.

A3967 Stepper Motor Driver This A3967 Stepper Motor Driver For Arduino is the most recent version of EasyDriver v44, which was created in collaboration with Brian Schmalz. When compared to previous versions, it offers more flexibility and control over your stepper motor . It is a simple stepper motor driver that is compatible with most microcontrollers and capable of producing a digital 0 to 5V pulse (0 to 3.3V pulse if you solder SJ2 closed on the EasyDriver). A 7V to 30V power supply is required for the module's motor. The digital interface is powered by an onboard voltage regulator that can be set to 5V or 3.3V. The A3967 is a full-featured microstepping motor driver with an integrated transistor. It is intended for use with bipolar stepper motors in full-, half-, quarter-, and eighth-step modes, with output drive capabilities of 30 V and 750 mA. The A3967 comes with a fixed off-time current regulator that can operate in slow, fast, or mixed current-decay modes. This current-decay control scheme produces less audible motor noise, higher step accuracy, and lower power dissipation. The transistor is essential to the A3967's simple implementation. Simply sending one pulse to the STEP input causes the motor to move one step (full, half, quarter, or eighth depending on two logic inputs). It is not necessary to programme phase-sequence tables, high-frequency control lines, or complex interfaces. The A3967 interface is ideal for applications where a complex P is either unavailable or overburdened. Features: A3967 microstepping driver Adjustable current control from 150mA/phase to 750mA/phase MS1 and MS2 pins are broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth) Compatible with 4, 6, and 8-wire stepper motors of any voltage Breadboard-compatible pins.

CNC Shield for Arduino The CNC shield for Arduino has total four slots, can drive 4 A4988 stepper motors. Each road stepper motors only need two IO ports. In other words, six IO ports can be well managed three stepper motors. The CNC Shield V3.0 allows you to build a 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. There are 4 slots on the board for plugging in stepper motor drive module which can drive 1 stepper motor each. Controlling each step stepper motor requires only two IO pins on the Arduino. Just insert this Arduino CNC Shield V3.0 onto an Arduino UNO , and install the GRBL firmware, you can then quickly build a DIY CNC engraving machine. This arduino shield is very convenient to use and is suitable for development boards compatible with Arduino. This CNC shield compatible with Arduino is the latest version of the CN shield model (V 3.0). The CNC Shield is GRBL 0.9 compatible and with the help of jumper wires , it is accessible to stepper drivers. Features: Compact design. Stepper Motors can be connected with 4 pin molex connectors or soldered in place. GRBL 0.9 compatible. (Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals) 4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins D12 and D13)

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

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

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

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.

Radiolink FPV Mobile Phone Holder Stand Folding Mount for RC4GS V3/V2 & RC6GS V3/V2 Controllers The Radiolink FPV Display Monitor Screen Holder is designed to securely hold mobile phones or FPV display screens on your RC controller. Simply insert the mount into the controller’s 1/4” (M6) thread hole, place your phone or monitor on the holder, and adjust the angle using the 360° rotating ball head. This makes it easy to achieve the perfect viewing position while flying, whether indoors or outdoors. This foldable and lightweight holder extends from 5.5cm to 9cm, supporting FPV monitors up to 4.3 inches and mobile phones up to 6.8 inches. Compatible with Radiolink RC4GS V2/V3, RC6GS V2/V3, and other devices with a standard thread hole, it is made of durable plastic and metal to withstand impact. Weighing only 105g, it is easy to install, remove, and carry, making it a reliable accessory for FPV enthusiasts. Features: Holds mobile phones or FPV display monitors securely 360° adjustable ball head for optimal viewing angles Extendable from 5.5cm to 9cm Supports FPV monitors up to 4.3 inches and phones up to 6.8 inches Compatible with Radiolink RC4GS V2/V3, RC6GS V2/V3, and devices with 1/4” (M6) thread hole Lightweight and durable, made of plastic and metal Easy to install, remove, and carry

SmartElex LIS3DH Triple Axis Accelerometer Breakout The SmartElex LIS3DH Triple Axis Accelerometer Breakout is a compact motion sensor module designed to measure acceleration along the X, Y, and Z axes. It helps users detect tilt, vibration, movement, and orientation, making it ideal for students, makers, educators, and engineers working on motion-responsive electronics. This lis3dh accelerometer offers a beginner-friendly way to collect movement data without complex circuitry, allowing users to focus on learning, building prototypes, or integrating sensors into real-world applications. This 3-axis accelerometer sensor is commonly used in robotics, handheld electronics, IoT devices, gesture recognition systems, and automation projects that require accurate motion sensing. It integrates smoothly with Arduino, Raspberry Pi, ESP32, and other microcontroller platforms, making programming and hardware connections straightforward. With reliable output and easy compatibility, the SmartElex LIS3DH sensor is a practical choice for prototyping, academic learning, DIY electronic builds, and product development where consistent acceleration measurement is required. Features: Triple-axis accelerometer for detecting movement and orientation Measures acceleration along X, Y, and Z axes with reliable output Compact breakout board for easy integration in embedded projects Compatible with Arduino, Raspberry Pi, ESP32, and similar platforms Ideal for robotics, IoT devices, gesture control, and automation projects Great for prototyping, STEM education, and motion-based product development

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

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

SmartElex Dual Channel Battle Relay module The SmartElex Dual Channel Battle Relay Module is a compact and practical relay board designed to safely control high-power electrical loads using low-voltage control signals. It helps users switch devices like motors, lights, pumps, or appliances without directly handling high voltage, making projects safer and more reliable. This module is well suited for students, makers, educators, and engineers who are working on control systems, robotics projects, or learning automation concepts in labs and classrooms. This dual-channel relay module is commonly used in robotics, home automation, IoT experiments, and industrial prototyping where isolated and dependable switching is required. It integrates easily with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing quick connection and straightforward control through digital pins. With stable operation and simple interfacing, the SmartElex Dual Channel Battle Relay Module enables developers to focus on logic and application design, making it ideal for DIY projects, academic experiments, and early-stage product development. Connection Diagram : Features: Dual-channel relay module for independent control of two loads Safely switches high-power devices using low-voltage control signals Electrical isolation for improved safety and reliable operation Easy interfacing with Arduino, Raspberry Pi, and ESP32 boards Suitable for robotics, RC systems, automation, and DIY projects Compact design ideal for prototyping and embedded applications Applications: Control of auxiliary systems in RC combat and battle vehicles Glow plug control in RC nitro-powered cars and models Switching high-power lighting systems in RC aircraft, boats, and cars Domestic appliance control for home automation projects Non-critical automotive electronics control such as glow wires

SmartElex BMM150 3 Axis Magnetometer Sensor The SmartElex BMM150 3 Axis Magnetometer Sensor is a compact digital sensor designed to measure magnetic fields along three axes. It helps users accurately detect orientation and heading, making it useful in projects where direction sensing and magnetic field measurement are required. This sensor is suitable for students, makers, engineers, educators, and startups working on embedded systems, learning projects, and prototype development that need reliable magnetic sensing in a small and easy-to-use form. This 3 axis magnetometer sensor is commonly used in robotics, IoT devices, navigation systems, and automation projects that require compass functionality or motion awareness. It can be easily integrated with popular development platforms such as Arduino, Raspberry Pi, and ESP32, allowing smooth data communication and quick setup. The stable performance and simple interfacing make it ideal for applications like robot navigation, electronic compasses, orientation tracking, and smart sensor-based systems Note - The default configuration of module is I2C interface, for SPI interface remove I2C smd jumper & short SPI smd jumper on module. Features: Measures magnetic field strength along three axes (X, Y, and Z) Enables accurate heading and orientation detection Digital output for easy interfacing with microcontrollers Low power operation suitable for battery-powered projects Compact sensor design for space-constrained applications Compatible with Arduino, Raspberry Pi, ESP32, and other development boards

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

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