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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Only 1 leftNVIDIA GeForce RTX 4090 (24 GB)
Halo product — uncompromised 4K and a workstation-class 24 GB VRAM buffer for AI / 3D. 450W TGP, four-slot coolers common.
Logitech G Yeti USB Mic
USB condenser with four polar patterns (cardioid / bidirectional / omni / stereo). Streaming staple.
Out of stockBlue Yeti X USB Mic
Four-capsule USB condenser, real-time LED metering, 4 pickup patterns.
Blivex LFP32700 3.2V 6Ah LiFePO₄ Rechargeable Battery Cell
[LiFePO4 Battery Cell] 🔋 Blivex LFP32700 3.2V 6Ah LiFePO₄ Rechargeable Battery Cell High Capacity • Long Cycle Life • High Discharge Performance • Ideal for Energy Storage & Electric Vehicles The Blivex LFP32700 3.2V 6Ah LiFePO₄ Rechargeable Cell is a premium cylindrical lithium iron phosphate (LiFePO₄) battery designed for high-performance energy storage and power applications. Featuring a nominal voltage of 3.2V, 6Ah capacity, and up to 18A continuous discharge current, this cell delivers stable output voltage, excellent safety, and long service life. The specification identifies the product as a LFP32700-6.0Ah LiFePO₄ cylindrical rechargeable cell. Manufactured with a robust steel enclosure, the battery offers excellent resistance to vibration, shock, and harsh operating conditions while maintaining low self-discharge and high energy efficiency. It is suitable for battery packs used in electric vehicles, solar energy storage systems, portable power stations, communication backup systems, robotics, and industrial equipment. The datasheet also highlights its sturdy steel case, high capacity, long cycle life, stable output voltage, and good high/low temperature performance. Datasheet : Click Here To Open ⭐ Features High-capacity 6Ah LiFePO₄ cylindrical cell Nominal voltage of 3.2V Excellent cycle life of 2000+ cycles High continuous discharge capability up to 18A (3C) Peak pulse discharge current up to 30A (5C) Low internal resistance (≤8mΩ) Stable output voltage Low self-discharge High safety and thermal stability Sturdy pressure-resistant steel casing Excellent vibration and shock resistance Suitable for battery pack assembly 📋 Technical Specifications Brand: Blivex Model: LFP32700-6.0Ah Battery Chemistry: Lithium Iron Phosphate (LiFePO₄) Battery Type: Cylindrical Rechargeable Cell Nominal Voltage: 3.2V Nominal Capacity: 6.0Ah Energy Density: 142Wh/kg Internal Resistance: ≤8mΩ (AC, 1000Hz) Limited Charge Voltage: 3.65V Charge Method: CC/CV Standard Charge Current: 0.5C Maximum Charge Current: 1C Charge Cut-off Current: 0.3A Discharge Cut-off Voltage: 2.0V Standard Discharge Current: 6A (1C) Maximum Continuous Discharge Current: 18A (3C) Maximum Pulse Discharge Current: 30A (10 seconds) Cycle Life: 1500 Cycles (25°C, 100% DOD) Charge Temperature: 0°C to 60°C Recommended Charge Temperature: 15°C to 40°C Discharge Temperature: -30°C to 60°C Recommended Discharge Temperature: 15°C to 40°C Cell Diameter: 32.2 ± 0.3mm Cell Height: 70.5 ± 0.3mm Weight: 135 ± 5g These specifications are taken from the manufacturer's datasheet. 🔧 Applications Suitable for: Solar Energy Storage Systems Portable Power Stations Home Energy Storage UPS Backup Systems Electric Scooters Electric Tricycles Electric Four-Wheel Vehicles Electric Logistics Vehicles Battery Pack Manufacturing Communication Backup Power Industrial Energy Storage Robotics Projects DIY LiFePO₄ Battery Packs Marine & RV Power Systems The manufacturer lists applications including electric two-wheel vehicles, tricycles, logistics vehicles, special vehicles, portable energy storage, household energy storage, industrial energy storage, and communication backup power. 📦 Package Includes 1 × Blivex LFP32700 3.2V 6Ah LiFePO₄ Rechargeable Battery Cell ⚠️ Note Use only with a compatible LiFePO₄ charger and an appropriate Battery Management System (BMS). Do not short-circuit, crush, puncture, disassemble, or expose the battery to fire or excessive heat. Store the battery in a cool, dry place when not in use. Product appearance may vary slightly depending on the manufacturing batch. The datasheet includes additional handling, storage, and safety precautions for transportation, storage, and battery use.
Type-C USB Mini Humidifier DIY Kit 4 in 1 | 4-Fogger Mist Maker Module | Ultrasonic Atomizer Film Sheet with Driver Board
[Ultrasonic Sensor] The Type-C USB Mini Humidifier DIY Atomizer Kit is a compact ultrasonic mist generation module designed for building or repairing USB-powered humidifiers, aroma diffusers, and fogging systems. Powered directly from a 5V USB Type-C source, the kit features a high-performance driver board and four ultrasonic ceramic atomizer discs that generate a dense, cool mist with low power consumption. Using advanced 108KHz ultrasonic atomization technology, the module converts water into ultra-fine mist particles without producing heat or mechanical noise. The stable driver circuit ensures reliable oscillation, efficient mist production, and long service life, making it an excellent choice for DIY enthusiasts, students, makers, repair technicians, and electronics hobbyists. Simply connect the module to a 5V USB Type-C power source, place the atomizer discs in water, and enjoy instant cool mist generation. It is compatible with custom humidifier enclosures, bottles, containers, 3D-printed projects, hydroponic systems, and decorative fog applications. ⭐ Features USB Type-C powered (5V DC) Four ultrasonic ceramic atomizer discs High-density cool mist output Advanced ultrasonic atomization technology Stable driver circuit for reliable operation Low power consumption Silent operation with no moving parts Compact and lightweight design Easy plug-and-play installation Ideal for DIY humidifiers and aroma diffusers 📋 Technical Specifications Product Type: USB Ultrasonic Humidifier Driver Kit Power Input: USB Type-C Female Operating Voltage: DC 4.5V–5V Input Voltage: 5V USB Operating Current: 300mA (Typical) Power Consumption: 2.5W–3W Rated Power: 2W Operating Frequency: 108KHz ±2KHz Atomizer Quantity: 4 Ceramic Atomizer Discs Atomization Technology: Ultrasonic Mist Output: High Density Fine Mist Driver Board: Ultrasonic Oscillation Control Module Cooling Method: Natural Cooling Power Connector: USB Type-C Female Socket Material: Ceramic Atomizer Discs + PCB Driver Board 🔧 Applications Suitable for: DIY USB Humidifiers Aroma Diffusers Replacement Humidifier Modules Decorative Fog Makers Hydroponic Systems Smart Garden Projects Terrariums & Vivariums Indoor Plant Humidification Science & Educational Projects Prototype Development DIY Electronics Projects 📦 Package Includes 1 × Ultrasonic Driver Circuit Board 4 × Ceramic Ultrasonic Atomizer Discs ⚠️ Note Use only clean water for optimal performance and longer atomizer life. Do not operate the module without water. Product images are for illustrative purposes only. The actual product may vary slightly depending on the manufacturing batch.
XY-LPWM Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display Module
XY-LPWM Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display Module is a two-channel PWM signal generator. It has dedicated switches for adjusting the frequency and duty cycle separately. Using this module PWM output, frequency and duty cycle can be set as per requirements. Communication Standard: 9600 bps Data bits: 8 Stop bit: 1 Check digit: none Flow control: none Set the frequency of the PWM “F101”: Set the frequency to 101 Hz (001 to 999) “F1.05”: set the frequency of 1.05 kHz (1.00 ~ 9.99) “F10.5”: Set the frequency to 10.5kHz (10.0 ~ 99.9) “F1.0.5”: set the frequency of 105kHz (1.0.0 ~ 1.5.0) Set the PWM duty cycle “DXXX”: set the PWM duty cycle to XXX; (001 ~ 100) Such as D050, set the PWM duty cycle is 50% Read the set parameters Send a “read” string to read the set parameters. Set successfully return: DOWN; Setup failed to return: FALL. Application: This is used to drive a stepper motor driver’s square wave. Generate an adjustable pulse for MCU. Generate an adjustable pulse for controlling relative circuit (PWM adjust lightspeed, etc). Used as a square wave signal generator for experimental development and use. Parameter Settings: The module has 4 switches, two for frequency adjustment and two for duty cycle adjustment. This module can generate frequencies between 1Hz and 150kHz, with automatic switching for different ranges. Frequency is divided into four ranges, automatic switching: 1. XXX (no decimal point): the smallest unit is 1Hz, the value range of 1Hz ~ 999Hz; 2. X.XX (decimal point in the hundred) the smallest unit is 0.01Khz, the range of 1.00Khz ~ 9.99Khz; 3. XX.X (decimal point in ten): the smallest unit is 0.1Khz; value range of 10.0KHz ~ 99.9KHz 4. X.X.X (decimal point in ten and hundred): the smallest unit is 1Khz; value range 1KHz ~ 150KHz 5. e.g. frequency display: 100 indicates PWM output 100Hz pulse; 1.01 indicates PWM output 1.01K pulse; 54.1 indicates that the PWM output has a pulse of 54.1 kHz; 1.2.4 indicates that the PWM output is 124 kHz pulse; Duty cycle range: 1 – 100%. In case of a power outage or if the module is powered down, the parameters that are set are saved automatically, so there is no need to set the parameters again. Single touch for increasing or decreasing single unit and long press for fast increasing or decreasing. Features: LCD display for frequency and duty cycle. Wide frequency range. High precision. Serial communication(TTL based). Package Includes: 1 x XY-LPWM Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display Module.
4S 20A 18650 Lithium Battery Protection Board
[Lithium Battery Protection Board] The HXYP-4S-BM20 4S 20A Lithium Battery Protection Board (BMS) is a compact and reliable battery management system designed specifically for 3.7V lithium-ion 18650 rechargeable cells. This board provides complete protection and safe operation for building 4-cell (4S) battery packs with a nominal output voltage of up to 14.8V and a full charge voltage of 16.8V. Featuring a square, lightweight, and portable design, this protection board is easy to integrate into custom battery packs and compact enclosures. It allows you to connect four 18650 lithium cells simultaneously and ensures balanced and safe charging and discharging. The board includes multiple built-in safety protections such as over-charge protection, over-discharge protection, over-current protection, and short-circuit protection, helping to extend battery life and prevent damage or hazardous conditions. This module is ideal for use in DIY battery packs, power tools, solar storage systems, electric scooters, backup power supplies, robotics, and other lithium battery applications. ⭐ Key Features ✔ Designed for 4S (4-cell) 18650 lithium-ion battery packs ✔ Supports continuous current up to 15A ✔ Built-in protection for over-charge, over-discharge, over-current & short circuit ✔ Compact square PCB design – easy to install ✔ Low power consumption with ultra-low quiescent current ✔ Increases battery safety, reliability, and lifespan 🔧 Technical Specifications Model: HXYP-4S-BM20 Battery Type: 3.7V Li-ion (18650 rechargeable cells) Configuration: 4S (4 cells in series) Charging Voltage: 16.8V Maximum Continuous Current: 15A Maximum Peak Current: 20A Over-Charge Voltage: 4.25 ± 0.05V per cell Over-Discharge Voltage: 2.5 ± 0.05V per cell Quiescent Current: < 30 µA Board Size: 3.6 × 3.6 cm Country of Origin: China 🎯 Applications DIY lithium battery packs Power tools & backup batteries Solar energy storage systems Electric scooters & e-bikes Robotics & embedded systems UPS & portable power stations 🔹 Battery Connection Terminals on Board Usually marked as: B- → Battery Pack Negative (Cell 1 –) B1 → Connection between Cell 1 & Cell 2 B2 → Connection between Cell 2 & Cell 3 B3 → Connection between Cell 3 & Cell 4 B+ → Battery Pack Positive (Cell 4 +) 🔹 Output / Charge Terminals P- → Load / Charger Negative P+ → Load / Charger Positive (same as B+) 🔧 Step-by-Step Wiring Connect 4 cells in series: Cell order:Cell1 → Cell2 → Cell3 → Cell4 Then wire as: Cell1 negative → B- Cell1 positive / Cell2 negative → B1 Cell2 positive / Cell3 negative → B2 Cell3 positive / Cell4 negative → B3 Cell4 positive → B+ For charging & discharging: Charger / Load positive → P+ (or B+) Charger / Load negative → P- ⚠️ Safety Tips Always connect balance wires before main power wires Use proper insulated wires and nickel strips Do not short any terminals Use a 16.8V Li-ion charger for 4S packs Ensure BMS current rating matches your load 📦 Package Includes 1 × -4S-BM20 4S 20A Lithium Battery Protection Board (BMS) * Product Images are shown for illustrative purposes only and may differ from actual product.
315MHz 4 Channel Wireless RF Remote Control Kit with Receiver Module (Non-Locking Mode)
[RF Module] 📡 315MHz 4 Channel Wireless RF Remote Control Kit with Receiver Module (Non-Locking Mode) 4 Channel RF Remote • 315MHz ASK Communication • 5V Receiver • Non-Locking Mode • Long Range Wireless Control The 315MHz 4 Channel Wireless RF Remote Control Kit is a reliable wireless control solution consisting of a 4-button RF transmitter and a super regenerative ASK receiver module. Operating at 315MHz, this kit is ideal for remote switching, automation, robotics, security systems, and DIY wireless control projects. The receiver module features four independent digital outputs (D0–D3) that correspond to the four buttons on the transmitter. When a button is pressed, the respective output pin goes HIGH, returning LOW immediately after the button is released. This Non-Locking (Momentary/Jog) operation makes the module perfect for applications requiring temporary switching such as electric door control, motor jogging, relay activation, and microcontroller interfacing. The receiver operates from a 5V DC supply and features a high-sensitivity ASK receiver with a Valid Transmission (VT) output pin for reliable signal detection. The transmitter uses a fixed-code encoder for secure communication and easy operation. Ideal for Arduino, ESP32, Raspberry Pi, AVR, PIC, industrial automation, wireless switching, and educational electronics projects. ⭐ Features 4-channel wireless RF remote control kit Operating frequency: 315MHz ASK (Amplitude Shift Keying) modulation Fixed-code RF transmitter Non-Locking (Momentary/Jog) operating mode Four independent digital outputs (D0–D3) High-sensitivity super regenerative receiver 5V DC receiver operating voltage VT (Valid Transmission) status output Compact PCB design Easy interface with microcontrollers Long wireless transmission range (environment dependent) Suitable for DIY and industrial automation 📋 Technical Specifications RF Transmitter Product Type: RF Wireless Remote Control Operating Frequency: 315MHz Number of Buttons: 4 Channels: 4 Modulation: ASK (Amplitude Shift Keying) Encoding Type: Fixed Code Operating Mode: Non-Locking (Momentary) Power Supply: 12V A23 Battery (Not Included) RF Receiver Module Operating Voltage: 5V DC Operating Frequency: 315MHz Receiver Type: Super Regenerative ASK Receiver Receiver Sensitivity: -98dBm Output Channels: D0, D1, D2, D3 VT Output: Yes (Valid Signal Output) Antenna Connection: External ANT Pin Recommended Antenna Length: Approx. 17cm (Quarter-Wave) Module Dimensions: Approx. 41 × 22 × 7 mm Receiver Pin Configuration VT – Valid Signal Output D3 – Channel 4 Output D2 – Channel 3 Output D1 – Channel 2 Output D0 – Channel 1 Output +5V – Power Input GND – Ground ANT – External Antenna Connection 🔧 Operating Modes Non-Locking (Momentary/Jog Mode) Press a button → Corresponding output goes HIGH. Release the button → Output immediately returns LOW. Ideal for momentary control applications. Note: This product is supplied in Non-Locking Mode only. 🔧 Applications Suitable for: Arduino Projects ESP32 Projects Raspberry Pi Projects Wireless Relay Control Home Automation Industrial Automation Remote Door Control Electric Door Locks Wireless Switching Robotics Motor Control Lighting Control Alarm Systems Security Systems DIY Electronics Educational Projects 📦 Package Includes 1 × 4-Button 315MHz RF Wireless Remote Control 1 × 315MHz Super Regenerative Receiver Module ⚠️ Note Battery is included. A 12V A23 battery is required for operation. Avoid bending or touching the receiver's onboard inductor (copper coil), as this may affect receiver sensitivity. Wireless operating range depends on antenna quality, obstacles, and surrounding RF interference. Product appearance may vary slightly depending on the manufacturing batch.
TowerPro Metal Gear MG90S Mini Digital Servo Motor (180° Rotation)
[Servo Motor] ⚙️ TowerPro MG90S Mini Digital Metal Gear Servo Motor (180°) Metal Gear • Digital Servo • 180° Rotation • High Precision • Ideal for RC & Robotics The TowerPro MG90S Mini Digital Servo Motor is a compact, high-performance 9g metal gear servo designed for precise position control in robotics, RC models, automation, and DIY electronics projects. Equipped with all-metal gears, a digital control circuit, and high positioning accuracy, the MG90S offers greater durability, faster response, and higher torque than standard plastic gear servos. Operating from 4.8V to 6.0V DC, the servo delivers a stall torque of up to 2.2 kg·cm and a rotation angle of approximately 180°, making it ideal for robotic arms, pan-tilt camera systems, RC airplanes, RC cars, boats, educational kits, and embedded control applications. The standard 3-wire JR/Futaba-compatible connector allows direct interfacing with Arduino, ESP32, Raspberry Pi, STM32, and most RC receivers. Its lightweight design, compact dimensions, and excellent holding torque make the MG90S one of the most popular micro servos for hobbyists, students, and professionals alike. ⭐ Features Genuine TowerPro MG90S digital servo Durable all-metal gear transmission Approximate 180° rotation angle High positioning accuracy Fast control response High holding torque Smooth and quiet operation Lightweight and compact design Standard 3-wire servo interface Compatible with Arduino, ESP32, Raspberry Pi and RC receivers Ideal for robotics, RC models and automation projects 📋 Technical Specifications Product Type: Mini Digital Servo Motor Brand: TowerPro Model: MG90S Gear Type: Metal Gear Rotation Angle: Approximately 180° Operating Voltage: 4.8V–6.0V DC Stall Torque: 1.8 kg·cm @ 4.8V 2.2 kg·cm @ 6.0V Operating Speed: 0.10 sec/60° @ 4.8V 0.08 sec/60° @ 6.0V Control Signal: PWM (50Hz Standard Servo Signal) Dead Band Width: 1µs Connector Type: JR / Futaba Compatible Cable Length: Approximately 25cm Dimensions: 22.8 × 12.2 × 28.5 mm Weight: Approximately 13.4g Operating Temperature: 0°C to +55°C These specifications are consistent with the manufacturer's published specifications. 🔧 Applications Suitable for: Arduino Projects ESP32 Projects Raspberry Pi Projects Robotic Arms Humanoid Robots RC Airplanes RC Cars RC Boats Pan-Tilt Camera Systems Automatic Door Mechanisms DIY Electronics Educational Robotics Smart Automation Projects Mechatronics Projects 📦 Package Includes 1 × TowerPro MG90S Mini Digital Servo Motor 1 × Servo Horn Set Single Arm Horn Double Arm Horn Four Arm Horn 1 × Mounting Screw Set ⚠️ Note Operate the servo only within the recommended 4.8V–6.0V DC supply range. For stable operation, use an external regulated power supply when driving the servo from microcontrollers. Product appearance, cable color, or accessories may vary slightly depending on the manufacturing batch. Counterfeit MG90S servos are common in the market. Purchase from trusted suppliers for genuine performance.
Stepper Motor(28YBJ-48) with SMD ULN2003 Driver Board
[Servo Motor] The 28BYJ-48 Stepper Motor with ULN2003 Driver Board is a compact, reliable, and low-cost 5V geared stepper motor kit designed for Arduino, robotics, automation, and embedded control applications. This motor features a 4-phase, 5-wire configuration with an integrated reduction gearbox, delivering high torque and precise positioning at low speeds. One of the biggest advantages of a stepper motor is its ability to operate accurately in an open-loop control system, eliminating the need for expensive feedback sensors or encoders. The motor position is precisely controlled by simply counting the input step pulses. The included ULN2003 driver board acts as a signal amplifier, allowing low-power control signals from microcontrollers such as Arduino, Raspberry Pi, ESP32, and 8051 to safely drive the stepper motor. The driver board also features four LED indicators (A, B, C, D) that display the working status of each phase in real time, making testing and debugging easy. With its compact size, plug-and-play connector, stable operation, and high reliability, this stepper motor kit is ideal for robot arms, CNC projects, camera sliders, 3D mechanisms, automation systems, and educational electronics projects. ⭐ KEY FEATURES ✔ 28BYJ-48 Mini Geared Stepper Motor – 5V DC✔ 4-Phase, 5-Wire Configuration✔ Includes ULN2003 Stepper Motor Driver Board✔ Open-Loop Precise Control – No encoder required✔ Built-in Gear Reduction for Higher Torque✔ Plug-and-Play Interface – Easy connection✔ Phase LED Indicators on driver board✔ Compact size, lightweight & reliable✔ Perfect for Arduino, robotics & automation projects 🔧 TECHNICAL SPECIFICATIONS Stepper Motor Model: 28BYJ-48 Supply Voltage: 5V DC (commonly used version) Number of Phases: 4 Wires: 5 Stride Angle: 5.625° × 1/64 (with gearbox) Gear Reduction Ratio: 1:64 (approx.) Dimensions: 44 × 44 × 28 mm (L × B × H) Type: Geared Stepper Motor Driver Board Driver Model: ULN2003 Input Interface: Standard 5-pin connector Indicators: 4 Phase LED status indicators Function: Signal amplification & motor driving 🎯 APPLICATIONS Arduino & microcontroller projects Robotics & automation systems Camera sliders & pan-tilt systems CNC & 3D motion mechanisms Educational electronics kits Smart home & IoT projects 📦 PACKAGE INCLUDES 1 × 28BYJ-48 5V Stepper Motor 1 × ULN2003 Stepper Motor Driver Board
32mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] Description One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery.PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defence if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent the cracking of the heat shrink over time. 32mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater than or Equal to 4000 Pa/m2 Package Includes : 1 x 32mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
61mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] Description One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery.PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defense if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent cracking of the heat shrink over time. 61mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater-than or Equal 4000 Pa/m2 Package Includes : 1 x 61mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
95mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery.PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defence if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent the cracking of the heat shrink over time. 95mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater than or Equal to 4000 Pa/m2 Package Includes : 1 x 95mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
Out of stock210mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] Description One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery. PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defense if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent cracking of the heat shrink over time. 210mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater-than or Equal 4000 Pa/m2 Package Includes : 1 x 210mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
4S 100A LiFePO4 Lithium Battery Protection Balance Charging BMS Protection PCB Board
[Lithium Battery Protection Board] ⚡ 4S 100A LiFePO₄ BMS Protection Board with Cell Balancing (White PCB) 4S LiFePO₄ Battery Management System • 100A Protection • Active Cell Balancing • Temperature Protection The 4S 100A LiFePO₄ Battery Management System (BMS) Protection Board is a high-performance protection circuit designed specifically for 4-cell (4S) 12.8V LiFePO₄ battery packs. It provides comprehensive protection against overcharging, over-discharging, over-current, short circuits, and temperature abnormalities, ensuring safe and reliable battery operation. Equipped with 15 ultra-low resistance MOSFETs and an integrated cell balancing function, the BMS helps maintain equal voltage across all four battery cells, improving battery efficiency, performance, and service life. The onboard balancing circuit automatically equalizes cell voltages during charging, reducing cell imbalance and maximizing battery capacity. This BMS supports both common port (same port) and separate charge/discharge (different port) configurations. In common-port mode, it supports up to 60A continuous charge and discharge, while in separate-port mode it supports 80A continuous discharge and 60A charging. The board also includes a temperature sensor interface for additional safety. Designed exclusively for 4S LiFePO₄ (3.2V) battery packs, this protection board is not compatible with 3.7V Li-ion, Lithium Polymer (Li-Po), or ternary lithium batteries. ⭐ Features Designed specifically for 4S LiFePO₄ battery packs High-current 100A protection design Built-in automatic cell balancing Over-charge protection Over-discharge protection Over-current protection Short-circuit protection Temperature protection interface Ultra-low resistance MOSFET design Supports common-port and separate-port wiring Low power consumption Easy installation and wiring Improves battery safety and lifespan 📋 Technical Specifications Product Type: LiFePO₄ Battery Management System (BMS) Battery Configuration: 4S (4 Cells) Battery Chemistry: LiFePO₄ (3.2V Cells Only) Maximum Protection Current: 100A Continuous Discharge Current (Separate Port): 80A Continuous Discharge Current (Common Port): 60A Maximum Charging Current: 60A Balancing Function: Yes Balance Current: 50mA Balance Voltage Accuracy: 3.355V–3.455V Overcharge Protection Voltage (Per Cell): 3.61V–3.69V Overcharge Recovery Voltage: 3.50V–3.60V Overcharge Detection Delay: 1.5–2.5 Seconds Over-discharge Protection Voltage (Per Cell): 2.27V–2.43V Over-discharge Recovery Voltage: 2.45V–2.65V Over-discharge Detection Delay: 0.5–1.5 Seconds Short-Circuit Protection: Yes Short-Circuit Detection Delay: 100–600µs Short-Circuit Recovery: Disconnect Load Temperature Protection: Yes (Temperature Sensor Interface) MOSFET Configuration: 15 Ultra-Low Resistance MOSFETs 🔧 Applications Suitable for: 12.8V LiFePO₄ Battery Packs Solar Energy Storage Systems Portable Power Stations Electric Scooters Electric Bicycles Backup Power Systems UPS Battery Packs Marine Battery Systems Caravan & RV Power Systems DIY LiFePO₄ Battery Packs Robotics Projects Industrial Battery Systems Battery Repair & Maintenance 📦 Package Includes 1 × 4S 100A LiFePO₄ Battery Management System (BMS) Protection Board – White PCB ⚠️ Note Compatible only with 4S (12.8V) LiFePO₄ battery packs. Do NOT use with 3.7V Lithium-ion (18650), Li-Po, LiMn, LiCoO₂, or ternary lithium batteries. Ensure correct wiring according to the BMS connection diagram before use. Product color, PCB layout, and component placement may vary slightly depending on the manufacturing batch. All product images are for illustration purposes only.
Stepper Motor(28YBJ-48) with ULN2003 Driver Board
[Servo Motor] The 28BYJ-48 Stepper Motor with ULN2003 Driver Board is a compact, reliable, and low-cost 5V geared stepper motor kit designed for Arduino, robotics, automation, and embedded control applications. This motor features a 4-phase, 5-wire configuration with an integrated reduction gearbox, delivering high torque and precise positioning at low speeds. One of the biggest advantages of a stepper motor is its ability to operate accurately in an open-loop control system, eliminating the need for expensive feedback sensors or encoders. The motor position is precisely controlled by simply counting the input step pulses. The included ULN2003 driver board acts as a signal amplifier, allowing low-power control signals from microcontrollers such as Arduino, Raspberry Pi, ESP32, and 8051 to safely drive the stepper motor. The driver board also features four LED indicators (A, B, C, D) that display the working status of each phase in real time, making testing and debugging easy. With its compact size, plug-and-play connector, stable operation, and high reliability, this stepper motor kit is ideal for robot arms, CNC projects, camera sliders, 3D mechanisms, automation systems, and educational electronics projects. ⭐ KEY FEATURES ✔ 28BYJ-48 Mini Geared Stepper Motor – 5V DC✔ 4-Phase, 5-Wire Configuration✔ Includes ULN2003 Stepper Motor Driver Board✔ Open-Loop Precise Control – No encoder required✔ Built-in Gear Reduction for Higher Torque✔ Plug-and-Play Interface – Easy connection✔ Phase LED Indicators on driver board✔ Compact size, lightweight & reliable✔ Perfect for Arduino, robotics & automation projects 🔧 TECHNICAL SPECIFICATIONS Stepper Motor Model: 28BYJ-48 Supply Voltage: 5V DC (commonly used version) Number of Phases: 4 Wires: 5 Stride Angle: 5.625° × 1/64 (with gearbox) Gear Reduction Ratio: 1:64 (approx.) Dimensions: 44 × 44 × 28 mm (L × B × H) Type: Geared Stepper Motor Driver Board Driver Model: ULN2003 Input Interface: Standard 5-pin connector Indicators: 4 Phase LED status indicators Function: Signal amplification & motor driving 🎯 APPLICATIONS Arduino & microcontroller projects Robotics & automation systems Camera sliders & pan-tilt systems CNC & 3D motion mechanisms Educational electronics kits Smart home & IoT projects 📦 PACKAGE INCLUDES 1 × 28BYJ-48 5V Stepper Motor 1 × ULN2003 Stepper Motor Driver Board
RTC Real Time Clock DS1307 I2C IIC Module for Arduino
[Clock Module, Sensors] This is Tiny RTC Real Time Clock DS1307 I2C IIC Module for Arduino. It contains a DS1307 real-time clock IC with a backup battery. It’s one of the easiest to use RTCs out there, with Arduino and other libraries or simply use I2C commands to set and retrieve the time and date. Includes a lithium coin cell battery which should be good for four years at least. Along with the DS1307 real-time clock, the module also has an Atmel 24C32 EEPROM chip which is handy for storing data without worrying about power loss. There is also space on the board to solder your own DS18B20 temperature sensor. This battery-powered clock allows you to keep a reasonably accurate time even when your Arduino is powered off. It is very useful in data logging and other time-sensitive applications. The device uses I2C to communicate with your Arduino. Features : Two-wire I2C interface Hour: Minutes: Seconds AM/PM Leap year compensation Accurate calendar up to the year 2100 Consumes Less than 500nA in Battery-Backup 1Hz output pin 56 Bytes of Non-volatile memory available to the user 4KB of serial electrically erasable and programmable read-only memory (EEPROM) Embed DS18B20 temperature sensor interface with the pull-up resistor.
QC3.0 QC2.0 USB DC-DC Buck Converter Fast Charging Module | 6–32V Step-Down to 3V / 5V / 9V / 12V | 4-Channel Quick Charger Circuit Board
[Step Down Buck Converter] 📝Description This QC3.0 QC2.0 USB DC-DC Buck Converter Charging Module is designed to convert a wide DC input range of 6V to 32V into stable fast-charging USB outputs. It supports Quick Charge 2.0 and 3.0 protocols, enabling intelligent voltage negotiation for rapid and efficient charging. The module features four independent output channels, making it suitable for charging multiple devices simultaneously. With support for common automotive and industrial voltages such as 9V, 12V, and 24V, it is perfect for use in cars, bikes, solar systems, battery packs, power banks, and embedded electronics projects. Thanks to its high-efficiency DC-DC step-down design, the module minimizes heat generation while maintaining reliable power delivery. This makes it an excellent choice for DIY enthusiasts, repair technicians, and developers looking to integrate fast USB charging into their systems. ⭐ Key Features ✔ Supports QC3.0 & QC2.0 Fast Charging Protocols ✔ Wide Input Range: 6V–32V DC (9V / 12V / 24V systems) ✔ Multi-Voltage Output: 3V / 5V / 9V / 12V ✔ Four-Channel USB Output for simultaneous charging ✔ High-Efficiency Buck Converter with low heat generation ✔ Automatic Voltage Negotiation for connected devices ✔ Ideal for automotive, solar, battery, and DIY electronics projects 🔧 Technical Specifications Input Voltage: 6V – 32V DCSupported Input Systems: 9V / 12V / 24VCharging Channels: 4 USB outputsFast-Charging Standards: QC2.0, QC3.0Supported Protocols: DCP BC1.2 Apple Charging Protocol Samsung Charging Protocol Huawei Fast Charge: FCP / SCP Huawei AFC Spreadtrum Fast Charge Protocol (SFCP) Qualcomm QC2.0 / QC3.0 Conversion Type: DC-DC Buck (Step-Down)Application Areas: Automotive USB charger, solar charging system, battery-powered devices, DIY electronics 📦 Package Includes 1 x 4 CHANNEL USB QC3.0 QC2.0 DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board
Fence Sink Bracket for 12CM Fan 4.7 Inch Fan Grill – 120mm
[Cooling FAN] The metal guard is constructed of C1008 Steel with a nickel-chrome finish. It has four holes that can be screwed onto any cooling fan with an 80-millimetre square frame. Able to withstand 220 pounds of pull force at each joint, the guard was designed to withstand heavy usage. Application: The fan guard creates a protective barrier between a fan’s blades and any foreign objects it may come into contact with. The blade is fragile and can be damaged if impacted by a foreign object during use. At high speeds, it can also cause damage to wires and fingers on contact. Specification: Product: Fence Sink Bracket Total Dimensions 4.7 x 4.7 x .2 in. (120 x 120 x 5 mm) Screw Hole Size Ø .2 in. (Ø 4.9 mm) Fan Size 120 mm Material C1008 Steel Finish Nickel Chrome Ring Diameter Ø 1.5mm Rib Diameter Ø 1.8mm Pull Force 220 lbs Plug Guage Test Ø 6.355mm
Fence Sink Bracket for 9CM Cooling Fan 3.5 Inch Fan Grill
[Cooling FAN] The metal guard is constructed of C1008 Steel with a nickel-chrome finish. It has four holes that can be screwed onto any cooling fan with an 80-millimetre square frame. Able to withstand 220 pounds of pull force at each joint, the guard was designed to withstand heavy usage. Application: The fan guard creates a protective barrier between a fan’s blades and any foreign objects it may come into contact with. The blade is fragile and can be damaged if impacted by a foreign object during use. At high speeds, it can also cause damage to wires and fingers on contact. Specification: Product: Fence Sink Bracket Total Dimensions 3.5 x 3.5 x .2 in. (76 x 76 x 5 mm) Screw Hole Size Ø .2 in. (Ø 4.9 mm) Fan Size 80 mm Material C1008 Steel Finish Nickel Chrome Ring Diameter Ø 1.5mm Rib Diameter Ø 1.8mm Pull Force 220 lbs Plug Guage Test Ø 6.355mm
Out of stock74HC00 Quad 2-Input NAND Gate IC through hole DIP-14 Package
[Logic Gates IC] The 74HC00 is a 14 Pin Quad 2-Input NAND Gate IC. This device contains four independent gates each of which performs the logic NAND function. NAND gates utilize advanced silicon-gate CMOS technology to achieve operating speeds similar to LS-TTL gates with the low power consumption of standard CMOS integrated circuits. All gates have buffered outputs. All devices have high noise immunity and the ability to drive 10 LS-TTL loads. The 74HC logic family is functionally as well as pin-out compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground. Features: Pin: 14 pin Four Independent NAND Gate 14 Pin IC Operating Temperature to 70°C High-Speed Low Power CMOS Type Packages Includes: 1 x 74HC00 Quad 2-Input NAND Gate IC through hole
Out of stock74HC02 Quad 2-Input NOR Gate IC (7402 IC) DIP-14 Package
[Logic Gates IC] The 74HC02 is a 14 Pin Quad 2-Input NOR Gate IC. NOR gates utilize advanced silicon-gate CMOS technology to achieve operating speeds similar to LS-TTL gates with the low power consumption of standard CMOS integrated circuits. All gates have buffered outputs, providing high noise immunity and the ability to drive 10 LS-TTL loads. The 74HC logic family is functionally as well as pin-out compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground. Features:- Four Independent NOR Gates 14 Pin IC Also Available in SMD Type Operating Temperature to 70 Deg C High-Speed CMOS Type
Out of stock74HC20 Dual 4-input NAND Gate IC (7420 IC) DIP-14 Package
[Logic Gates IC] The 74HC20 is a 14 Pin Quad 4-Input NAND Gate IC. This device contains four independent gates each of which performs the logic NAND function. NAND gates utilize advanced silicon-gate CMOS technology to achieve operating speeds similar to LS-TTL gates with the low power consumption of standard CMOS integrated circuits. All gates have buffered outputs. All devices have high noise immunity and the ability to drive 10 LS-TTL loads. The 74HC logic family is functionally as well as pin-out compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground. Specifications :- Parameter Specification Supply Voltage (VCC − 0.5 to + 7.0V DC Input Voltage (VIN) −0.5V to VDD + 0.5V Output Voltage (VOUT) − 0.5 to VCC + 0.5V Clamp Diode Current (IIK, IOK) ± 20 mA DC Output Current, per pin (IOUT) ± 25 mA DC VCC or GND Current, per pin (ICC) ± 50 mA Storage Temperature Range (TSTG) − 65°C to + 150°C Power Dissipation (PD) (Note 4) 500 mW S.O. Package only 500 mW
Out of stockMini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560
[Brushed DC motor Driver] Mini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560 is a Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC and stepping motors) and switching power transistors. To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz. Features: Enable facility. Overtemperature protection. Logical “0” input voltage up to 1.5V(High noise immunity). Internal clamp diodes. Package Includes: 1 x Mini Motor Drive Shield Expansion Board L293D Module.