1x40 2.54mm Pitch Female Berg Strip Header (Right Angle)

Male to Female Jumper Wires (20cm) 40pcs These DIY Male to Female Jumper Wires are multipurpose use and very handy. Quick prototyping and testing excellent connector. These dupont cables generally used for connecting FRC pins, Header pins, Berg pins etc. These jumper wires are electrical wires or groups 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. Female to Male Breadboard Jumper Wires are mostly useful with Orange Pi, Banana Pi, Raspberry Pi , Arduino , and other mini pc and development boards . It is very useful in the PCB project, PC motherboard, as well as Breadboard connections. Additionally, the Arduino jumper wire kit allows you to plug and unplug easily for prototyping and can be used over and over again. Applications: Raspberry Pi Arduino PCB projects Breadboard connections

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.

Male to Male Jumper Wires (20cm) 40pcs These are Breadboard Jumper Cable Wire (20cm) 40pcs, which are multipurpose use and very handy. Quick prototyping and testing excellent connector. These DuPont cables are generally used for connecting FRC pins, Header pins, Berg pins, etc. 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. Male to male Dupont/Jumper Wire is useful with Orange Pi, Banana Pi, Raspberry Pi, Arduino, and other mini pc and development boards. It is very useful in the PCB project, pc motherboard, as well as Breadboard connections. Additionally, it allows you to plug and unplug easily for prototyping and can be used over and over again. Check out - Premium Jumper Wire Set – 120 pcs total (M2M, M2F, F2F)

F2F Jumper Wires (20cm) 20pcs Many microcontroller boards like the Arduino and Freeduino SB use pins to make your electrical connections. Unfortunately, a really nice cable to do so is not that easy to find. Enter the female to female connector. Order your Female to Female Jumper Wires today! check out: Solderless Breadboard Jumper Wire Connectors (140pcs) Key Feature: Each jumper wire is 150mm (6 inches) long. Features socket-to-socket connectors. Made from 22 AWG wire. Fits perfectly into 0.1-inch spaced breadboards. Allowing easy prototyping and circuit building. Shop professional-grade M2M, M2F, F2F Jumper Wires Set – 40 pcs each type Discover the perfect Jumper Wires for your needs.

20cm 20pcs Male to Female Jumper Wires These Male to female jumper wires are best for any electronic prototyping and testing project. They allow for easy and convenient interconnection between components without the need for soldering. These wires come in groups or cables with connectors or pins at each end and are commonly used for connecting FRC pins, Header pins, Berg pins, and other components. These male to female jumper wires are also useful for connecting components on a PCB project or a PC motherboard. Their easy plug-and-play design makes it possible to test different component configurations quickly without the need for permanent connections. Switch to our male to female jumper/Dupont wires and say goodbye to messy wires and complex setups. Applications: Raspberry Pi Arduino PCB projects Breadboard connections

10-Pin Alligator Clip to Male Jumper Wire for Test Lead (20 cm) Alligator clips and insulated clips are hardware products that clip onto and easily connect terminals and lead wires. The clip part that attaches to the terminal or lead wire on the alligator clip is uncovered. They are available in smaller sizes for low-voltage applications to large sizes for high-voltage applications. Insulated clips have insulation material, such as vinyl, wrapped around them and are mainly used in low-voltage applications. Both types are available with full insulation covering for safe operations. A 10-pin connection cable with a length of 20 cm, with a male pin plug on one side and alligator clips on the other. Perfect for the construction of prototypes of devices for temporary connection of signals. These wires are ideal for bread-boarding with unusual non-header-friendly surfaces, these cables will be your best friends! It is insulation-covered clips connected at one end and a DuPont Male connector at another end. It is useful in electrical or laboratory electric testing work. Alligator clips are frequently used in school physics laboratories to quickly and cheaply assemble circuits. They are very useful for connecting components to wires. Alligator clips can also be used as miniature clamps to hold parts together. In addition, it is also useful for gluing wires together for soldering. Easy for installation and safety for use with the insulation with five different colors in pair soft plastic insulation cover. Applications: Used in Electronic Projects Prototyping for testing the connections Can be used with Arduino, or Raspberry Pi  to check the connection Temporarily secure and hold wiring connections together for testing and maintenance purposes in PCBs or Breadboards.

Cytron UNO Special Edition – Arduino-Compatible Board with Side Connectors The Cytron UNO Special Edition (CT-UNO-SE) is a fully Arduino-compatible development board designed for makers, students, and hobbyists who need reliable performance for DIY electronics and robotics projects. Built around the ATmega328P microcontroller, this board offers the familiar Arduino UNO experience while adding enhanced stability with the FTDI FT231X USB-to-Serial chip, ensuring smoother programming and communication. Whether you're prototyping sensors, robotics circuits, or automation systems, this board delivers a dependable and beginner-friendly platform for all your microcontroller learning needs. What makes the CT-UNO-SE stand out is its unique side connectors, allowing it to be stacked on top of or beneath Arduino shields, giving you maximum flexibility while building layered circuits or compact embedded systems. With full Arduino UNO R3 shield compatibility, 14 digital I/O pins, 6 analog inputs, and both 5V and 3.3V regulated outputs, this special edition board combines convenience, versatility, and long-term durability - all wrapped into a sleek white PCB that makes your projects look clean and professional. Features Built with the ATmega328P microcontroller paired with the Optiboot bootloader for faster program uploads. Equipped with the FTDI FT231X USB interface, offering stable and reliable serial communication. Supports a wide DC input range of 7–15V, suitable for most maker power setups. Includes a 1A 5V regulator and 500mA 3.3V regulator for powering sensors and modules. Offers 14 digital I/O pins (6 PWM) and 6 analog inputs for versatile interfacing. Fully R3 shield compatible with special side connectors for flexible stacking. Features 32KB Flash memory, 2KB SRAM, and 1KB EEPROM for program storage. Comes with easily visible TX, RX, power, and pin-13 LEDs placed on the board edge. Utilizes a durable USB Micro-B connector on a clean white PCB. Dimensions

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

TP4056 Battery Charger C Type Module with Protection The TP4056 1A Li-Ion Battery Charging Board Type C with Current safety is a small module designed for charging single-cell 3.7V lithium-ion batteries, such as 16550s, that do not have their own safety circuit. Using the TP4056 charger IC and the DW01 battery protection IC, this lithium battery charger produces a 1A charging current and will automatically stop charging once completed. Also, if the battery voltage goes below 2.4V, the safety IC will cut off the load to save the cell from functioning at an unacceptably low voltage. The TP4056 charging module also protects against overvoltage and reverse polarity connections, often sacrificing itself to preserve the battery. Just remember to double-check your connections the first time you put it up. Your batteries can be safely and easily charged with TP4056 lithium-ion battery charger. All you need to do is connect it correctly, and it will do the rest. Use the Module Through the Following Steps: To supply power, either plug in a Type C cable or attach a 5V DC source to the IN+ and IN-labeled pads on the module's left side. Fasten the battery that has to be charged to the B+/B- pads on the module's right side. The OUT+/OUT- pads on the right side can also be used to attach a load, or an object that the battery will power. Keep in mind that while the battery is charging, unplug the load. When the charging process is finished, the green LED will turn on, while the red LED will illuminate to signify that the charge is ongoing. Be careful to never charge your battery at a rate exceeding 1C Note: Please remember the following crucial information: The module's 5V input side is the only one to which the ampere meter should be attached. A charging current of around 37% of the battery's capacity is advised. A 400mAh charging current is adequate for a 1000mAh battery. Make use of reasonably thin connecting cables. Verify the security of the connecting point. It is usual for the current to decrease below 1000mA if the input voltage is greater than 5.2V. In order to shield the chip from harm, this protective function immediately lowers the charging current. Reverse polarity should be avoided at all costs. Features It features a modern USB Type-C port that provides convenient and universal power. This module includes integrated protection against over-charge, over-discharge, and short-circuits. It utilizes an intelligent CC/CV algorithm to ensure a fast, safe, and efficient charging cycle. It is equipped with clear dual-LED indicators for at-a-glance monitoring of the charging status. This module is perfectly designed for charging single-cell 3.7V Li-Ion and Li-Po batteries. Its compact and high-precision design allows for seamless integration into any electronics project.

Mornsun LMF75-23B15 AC/DC 75W Enclosed Switching Power Supply The LMF75-23B15 is a 75W enclosed AC-DC switching power supply from Mornsun. It features a universal AC input voltage of 85-305VAC or DC input voltage of 120-430VDC, built-in active PFC function, high efficiency, and high reliability. It also has output short circuit, over-current, over-voltage, and over-temperature protection. The LMF75-23B15 is designed to meet IEC/EN/UL62368, EN60335, GB4943 standards and is widely used in areas of industrial, LED, street light control, electricity, security, telecommunications, smart home, etc. Features: Universal AC input voltage of 85-305VAC or DC input voltage of 120-430VDC Built-in active PFC function High efficiency (up to 87%) High reliability Output short circuit, over-current, over-voltage, and over-temperature protection Designed to meet IEC/EN/UL62368, EN60335, GB4943 standards Widely used in areas of industrial, LED, street light control, electricity, security, telecommunications, smart home, etc. check out : Mornsun LMF75-23B05 AC/DC 75W Enclosed Switching Power Supply Note: Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25?, humidity<75%RH with nominal input voltage and rated output load The room temperature derating of 5?/1000m is needed for operating altitude greater than 2000m All index testing methods in this datasheet are based on our company's corporate standards In order to improve the efficiency at high input voltage, there will be audible noise generated, but it does not affect product performance and reliability The out case needs to be connected to the earth ( )of system when the terminal equipment in operating The output voltage can be adjusted by the ADJ, clockwise to increase Our products shall be classified according to ISO14001 and related environmental laws and regulations and shall be handled by qualified units The power supply is considered a component which will be installed into the final equipment. All EMC tests should be confirmed with the final equipment

18650 1 Cell Holder This is a 1x battery cell holder for a rechargeable 18650 Lithium-Ion Cell. These battery holders are used to add single lithium cells and have clearly marked with polarity identification to assure proper orientation. It has shrapnel screens to hold the batteries, making the installation and replacement of the battery safe, easy, and reliable. Features Holds a single 18650 battery. Easy install, convenient to use. High-quality plastic material. Applications: Robotics: The 18650 Single Battery Cell Case Holder allows for easy incorporation of 18650 cells into robotics applications by providing a simple way to connect and power devices Prototyping: It is ideal for prototyping projects where a single 18650 Lithium-Ion Cell needs to be securely held and connected, ensuring proper orientation and easy installation DIY Electronics: Commonly used in do-it-yourself electronics projects, the holder facilitates experimentation and modification of circuits by providing a flexible and removable power source Automotive Electronics: In automotive applications, such as key fobs and portable navigation devices, the cell holder enables convenient battery replacement, ensuring uninterrupted operation of electronic components

3.7v 2000mah 18650 Li-Ion Battery 18650 lithium-ion battery is a Li-ion rechargeable battery with a 2000 mAh Battery Capacity. This is not a standard AA or AAA battery but is very useful for applications that require continuous high current or high current in short bursts like in cameras, DVD players, iPod, etc. These 3.7v 18650 li-ion battery 2000mah are safe to use, environment friendly and have long battery life. This li ion battery comes with high energy density and provides excellent continuous power sources to your device. It should be used with a protection circuit board that guards the 18650 battery against over-charge, over-discharge of the pack, and avoid over-current drawn. It is very easy to use the cell in any circuit just solder the wires on the terminals or use 18650 li-ion battery holders to easily replace the used cells. Care must be taken while handling Li-ion batteries as they are volatile and inflammable and should not be handled roughly and punctured. Also, don’t overcharge and discharge beyond a certain point as gases accumulated inside might result in explosions and fire. So always use the Protection board while using Li-Ion cells. Note: We do not recommend using this 3.7v 18650 lithium ion rechargeable battery for critical applications. The capacity and performance of the cell might vary based on charging and discharging parameters. Please note that we do NOT provide any guarantee/warranty on this product. Read our blog about Battery AH means , It covers all the details of batteries. Features: Safe to use, environment-friendly, and with long battery life High energy density for excellent continuous power sources Use with a protection circuit board to guard against over-charge, over-discharge, and over-current Easy to use in any circuit by soldering wires on the terminals or using battery holders Applications: Cordless Phones Tablet PC GPS iPod, DVD, MP4 Player, etc. Mobiles backup power supply/Power bank

Raspberry Pi 4 Model B 8GB RAM The Raspberry Pi 4 Model B (8GB) sets a new benchmark in compact computing, offering exceptional performance for academic, professional, and hobbyist applications. With 8GB of LPDDR4 RAM and a Broadcom BCM2711 Quad-Core Cortex-A72 (ARM v8-A, 64-bit) processor running at 1.5GHz, it delivers the processing power needed for advanced computing tasks such as artificial intelligence, data analysis, and software development. Supporting dual 4K displays via micro-HDMI ports, the Raspberry Pi 4B 8GB enables high-resolution visuals and smooth 4K video playback at 60 frames per second using H.265 decoding. It also features dual-band Wi-Fi (2.4GHz and 5GHz), Gigabit Ethernet, and Bluetooth 5.0, ensuring fast and stable connectivity for seamless browsing, streaming, and remote collaboration. With two USB 3.0 and two USB 2.0 ports, along with a 40-pin GPIO header, the Raspberry Pi 4B allows easy integration of sensors, motors, and external devices—making it ideal for robotics, IoT, and electronic prototyping. Compatible with Raspberry Pi OS, Ubuntu, and lightweight Windows versions, this board is versatile, reliable, and easy to power using a standard 5V/3A USB-C adapter, making it an outstanding tool for learning, experimentation, and innovation. Useful Link: https://www.raspberrypi.com/documentation/computers/getting- started.html Key Features: RPI 4 features a Broadcom 2711 processor for efficient multitasking. 8GB RAM enables running intensive data servers and virtual machines smoothly. The latest Broadcom 2711 Quad-Core CPU at 1.5GHz for 20% faster performance. Dual-display 4K support with hardware decode for smooth playback. Dual-band 802.11ac Wi-Fi and Bluetooth 5.0 for faster, extended-range connectivity. USB 3.0 technology for 10x faster wired networking. Maintains 40-pin header with new PoE pins, caution with HATs. Comes with NOOBS (New Out Of Box Software) for easy operating system installation. Pin Diagram: Important Information about Raspberry Pi 4 It can be used as a budget desktop PC with smooth multitasking. Runs Chromium browser for fast web browsing. Supports media centres like OSMC and LibreELEC for streaming and 4K playback. Plays classic console games via RetroPie emulators. Supports multiple OS options, including Raspbian, Ubuntu, and Snappy Core. Acts as a Windows 10 thin client for remote desktop use. Built-in WiFi and Bluetooth for seamless connectivity. Dual-display support enhances multitasking and productivity. Uses of Raspberry Pi 4: Learn programming languages like Python, Java, or Scratch. Learn to connect with sensors, LEDs, motors, and more. Create home automation systems, control lights, and security. Build gadgets, robots, or IoT devices. Improve STEM education in schools and universities. Prototyping of product ideas or concepts before full-scale development. Comparison Raspberry Pi 4B Vs Raspberry Pi 3B+ Vs Raspberry Pi 3B Feature Raspberry Pi 4 Model B Raspberry Pi 3 Model B+ Raspberry Pi 3 Model B Price (INR)₹ ₹ 3599 VIEW ₹ 3649 VIEW ₹ 3999 VIEW Processor Broadcom 2711, Quad-core Cortex-A72 64-bit SoC @ 1.5GHz Broadcom BCM2837B0, Quad-core Cortex-A53 64-bit SoC @ 1.4GHz Broadcom BCM2837A1 (B0), Quad-core Cortex-A53 64-bit SoC @ 1.2GHz Memory 1GB, 2GB, or 4GB LPDDR4 SDRAM 1GB LPDDR2 SDRAM 1GB LPDDR2 SDRAM Connectivity 2.4GHz / 5.0GHz IEEE 802.11.b/g/n/ac wireless LAN, Bluetooth 5.0, BLE, 2 x USB 2.0 / 2 x USB 3.0 ports delivering true Gigabit Ethernet 2.4GHz / 5.0GHz IEEE 802.11.b/g/n/ac wireless LAN, Bluetooth 4.2, BLE, 4 x USB 2.0 ports, Gigabit Ethernet over USB2.0 (max. 300Mbps) 2.4GHz IEEE 802.11.b/g/n/ac wireless LAN, Bluetooth 4.1, BLE, 4 x USB 2.0 ports Access Extended 40-pin GPIO header Extended 40-pin GPIO header Extended 40-pin GPIO header Video & Sound 2 x micro HDMI, 4K video, 1 x MIPI DSI display port, 1 x MIPI CSI camera port, 4-pole stereo output and composite video port 1 x full-size HDMI, 1 x MIPI DSI display port, 1 x MIPI CSI camera port, 4-pole stereo output and composite video port 1 x full-size HDMI, 1 x MIPI DSI display port, 1 x MIPI CSI camera port, 4-pole stereo output and composite video port Multimedia H.265 decode (4Kp60), H.264 decode (1080p60), H.264 encode (1080p30), OpenGL ES 1.1, 2.0, 3.0 graphics H.264, MPEG-4 decode (1080p30), H.264 encode (1080p30), OpenGL ES 1.1, 2.0 graphics H.264, MPEG-4 decode (1080p30), H.264 encode (1080p30), OpenGL ES 1.1, 2.0 graphics SD Card Support Micro SD format for loading OS & data storage Micro SD format for loading OS & data storage Micro SD format for loading OS & data storage Input Power 5V/3A DC via USB Type-C connector, 5V DC via GPIO, POE enabled 5V/2.5A DC via micro USB connector, 5V DC via GPIO, POE enabled 5V/2.5A DC via micro USB connector, 5V DC via GPIO Performance Tests: Raspberry Pi 4 Model B (8GB) vs Earlier Versions Powered by a quad-core ARM Cortex-A72 processor, offering a major performance jump over the older Cortex-A53 used in previous Pi models. Delivers faster application launches, smoother multitasking, and improved web browsing performance. In memory-intensive tasks, the 8GB variant shows higher read/write speeds and better overall responsiveness. Handles large datasets efficiently, enabling faster data transfers and better performance for heavy workloads. Upgraded hardware including USB 3.0 ports and Gigabit Ethernet enhances transfer speeds and network reliability. Ideal for power users running virtual machines, data-heavy programs, or multi-tab browsing sessions.

Mornsun LI30-20B48PR2 AC/DC 30W DIN-Rail Power Supply The LI30-20B48PR2 is a cost-effective and energy-efficient AC/DC power supply with 48VDC output. It has an extremely compact design that saves space on your DIN-Rail and is ideal for applications like industrial control and building automation. Features: Compact design Energy-efficient Standard DIN-Rail mounting 48VDC output Wide input voltage range (85-264VAC or 120-370VDC) High current output (0.75A) High isolation voltage (4000VAC) Overvoltage, undervoltage, overcurrent, and overload protection Note: Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25?, humidity<75%RH with nominal input voltage and rated output load The room temperature derating of 5?/1000m is needed for operating altitude greater than 2000m All index testing methods in this datasheet are based on our company's corporate standards In order to improve the efficiency at high input voltage, there will be audible noise generated, but it does not affect product performance and reliability The out case needs to be connected to the earth ( )of system when the terminal equipment in operating The output voltage can be adjusted by the ADJ, clockwise to increase Our products shall be classified according to ISO14001 and related environmental laws and regulations and shall be handled by qualified units The power supply is considered a component which will be installed into the final equipment. All EMC tests should be confirmed with the final equipment

Arduino UNO R3 SMD Board Compatible with Arduino One of the new ways into the world of electronic innovation is the SMD Arduino UNO R3 Development Board with Cable. This board is totally different from the Arduino Uno R3. Uno R3 and Uno R3 SMD both boards are based on the ATmega328P Microcontroller but the difference is that the UNO R3 is through-hole version, and this is an SMD version or Surface Mount Device version. A SMD or surface-mount device is an electronic component that is mounted directly onto the surface of a printed circuit board (PCB), rather than being inserted through holes. The board has dimensions of 7 x 5 x 1cm and comes to the fore as a compact and reliable choice for both beginners and experienced electronics enthusiasts. It is designed with 14 digital input/output pins, 6 analog inputs, a 16MHz crystal oscillator, a USB connection, and the CH340G USB to UART Converter Chip, this development board is a perfect match for the electronic prototypes that you want to build with Arduino. This Arduino programming board is a must-have if you're into robotics, IoT, home automation, and security system projects. If your projects are large or small, this Arduino UNO R3 ATmega328P SMD microcontroller brings to you a whole lot of potential and creativity. Buy Genuine Arduino Uno R3 – Best Price! Pin Diagram Comparison of Uno Boards: Specification UNO Wifi UNO SMD UNO R3 Microcontroller ATmega4809 ATmega328P (SMD) ATmega328P (Through hole) USB connector Micro-USB USB-B USB-B Digital I/O Pins 14 14 14 Analog input pins 6 6 6 PWM pins 5 6 6 UART Yes Yes Yes I2C Yes Yes Yes SPI Yes Yes Yes I/O Voltage 5V 5V 5V Input voltage (nominal) 7-12V 7-12V 7-12V DC Current per I/O Pin 20mA 20 mA 20 mA Power Supply Connector Barrel Plug Barrel Plug Barrel Plug clock speed 16 MHz 16 MHz 16 MHz USB-Serial chip ATmega16U2 CH340 ATmega16U2 SRAM 6.144KB 2KB 2KB Flash Memory 48KB 32KB 32KB EEPROM 256 Bytes 1KB 1KB Dimensions 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm RADIO MODULE u-blox NINA-W102 - - Inertial Measurement Unit LSM6DS3TR (3D accelerometer) - - LED_BUILTIN 25 13 13 Wi-Fi Microprocessor Yes - - Why Choose the SMD Version? Compact design allows smaller, space-efficient circuits. Cost-effective due to automated manufacturing and minimal material use. High reliability with better resistance to vibration and mechanical stress. Improved electrical performance with reduced signal loss and interference. Lightweight and ideal for modern compact electronics. Faster production and easier large-scale assembly. Comparison: Original Arduino UNO vs Compatible SMD UNO Feature Original Arduino UNO Compatible SMD UNO Microcontroller ATmega328P (DIP) ATmega328P (SMD) Build Type Through-hole components Surface-mount components Chip Replaceability Removable and replaceable Fixed (non-removable) Size Slightly larger More compact Performance Same processing power Same processing power USB Interface ATmega16U2 CH340 or similar USB-to-Serial chip Ease of Repair Easier (replaceable chip) Harder to repair Cost Slightly higher More affordable Durability Very robust Slightly less robust mechanically Best For Learners who want to experiment with hardware Budget-friendly, compact projects Beginner Project Ideas with Arduino UNO SMD LED Blink Project Temperature Sensor Monitoring Light Sensor (LDR) Based Automation DC Motor Speed Control Ultrasonic Distance Measurement RGB LED Color Mixing Servo Motor Angle Control Sound Sensor Activation IR Remote Controlled LED Push Button Counter Display Applications: Arduino Music Instrument Robot Car Fingerprint door lock Home Automation Security systems