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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Soldering Helping Hand
Adjustable crocodile clamps, soldering iron holder, LED light, magnifying lens.
Out of stockPCB Holder Clamp (PCB Vise)
Adjustable PCB holder/vise, fits boards up to 200mm × 140mm.
Out of stockAC/DC Clamp Meter 600A
Non-contact clamp meter, 600A AC/DC, NCV detection, frequency, capacitance.
0.3–4mm Mini Drill Chuck with Key & 2.3mm Brass Shaft Adapter for 555 DC Motor
[General DC Motor] 🔧 0.3–4mm Mini Drill Chuck with Key & 2.3mm Brass Shaft Adapter for 555 DC Motor 0.3–4mm Chuck Capacity • JT0 Drill Chuck • 2.3mm Brass Shaft Adapter • Ideal for DIY Mini Drill Machines The 0.3–4mm Mini Drill Chuck with Key and 2.3mm Brass Shaft Adapter is a high-quality accessory designed for converting 555 DC motors into compact mini drilling machines. This complete set includes a precision JT0 drill chuck, a 2.3mm brass motor shaft adapter, and a chuck key for secure tightening and loosening of drill bits. Manufactured from high-carbon steel, the drill chuck provides excellent durability, wear resistance, and high clamping accuracy. It securely holds drill bits ranging from 0.3mm to 4.0mm, making it suitable for precision drilling in wood, plastic, acrylic, PCB boards, resin, aluminum, and other soft materials. The included 2.3mm brass shaft adapter offers a precise fit on 555 DC motor shafts, ensuring smooth power transmission with minimal vibration. Its corrosion-resistant brass construction provides excellent durability and reliable performance for long-term use. This mini drill chuck kit is widely used in DIY mini drill machines, PCB drilling, model making, hobby crafts, jewelry making, electronics repair, and educational projects. ⭐ Features Precision 0.3–4mm JT0 mini drill chuck Includes 2.3mm brass shaft adapter High-carbon steel chuck construction Brass motor shaft connector Secure key-operated chuck mechanism High clamping accuracy Strong impact and wear resistance Smooth and stable operation Easy installation on 555 DC motors Suitable for DIY mini drill machines Compatible with drill bits from 0.3mm to 4mm Compact and lightweight design 📋 Technical Specifications Product Type: Mini Drill Chuck Kit Chuck Capacity: 0.3mm – 4.0mm Chuck Type: JT0 Keyed Drill Chuck Chuck Material: High-Carbon Steel Adapter Material: Brass Motor Shaft Diameter: 2.3mm Connection Type: JT0 Taper Tightening Method: Chuck Key Compatible Motor: 555 DC Motor Application: Mini Electric Drill Conversion Color: Silver & Brass 🔧 Applications Suitable for: DIY Mini Drill Machines 555 DC Motor Projects PCB Drilling Electronics Repair Model Making Jewelry Making Woodworking Plastic Drilling Acrylic Drilling Resin Crafts Hobby Projects Educational Projects Small Precision Drilling Prototype Development 📦 Package Includes 1 × 0.3–4mm JT0 Mini Drill Chuck 1 × Chuck Key (Spanner) 1 × 2.3mm Brass Shaft Adapter ⚠️ Note Designed for 2.3mm diameter motor shafts. Recommended for 555 DC motors and compatible motors with a 2.3mm shaft. Suitable for drilling soft materials such as wood, plastic, acrylic, PCB, and aluminum. Not intended for heavy-duty industrial drilling or hammer drilling applications. Product appearance may vary slightly depending on the manufacturing batch.
Digital Multimeter Test Leads with Ultra Sharp Needle Probe & Banana Plug CAT III 1000V 10A for SMD
[Hook up wire] The Digital Multimeter Test Lead Kit is a high-quality replacement probe set designed for accurate electrical measurements and electronic troubleshooting. Featuring ultra-sharp stainless steel needle probes, these leads allow easy access to miniature IC pins, SMD components, PCB tracks, LEDs, and other small electronic devices without causing damage. The probes are fitted with standard 4mm banana plug connectors, making them compatible with most digital multimeters, clamp meters, bench meters, and testing equipment from brands such as Fluke, Extech, Mastech, Uni-T, Victor, Sanwa, and many more. Constructed using high-quality PVC insulated cables and durable metal probes, the leads provide excellent flexibility, low resistance, and long service life. The CAT III safety rating ensures safe operation up to 1000V with a maximum current rating of 10A, making them suitable for both electronics and electrical testing. The built-in protective finger guards improve operator safety, while the flexible cables remain tangle-free during continuous testing. These probes are ideal for laboratory work, electronics repair, field service, educational laboratories, industrial maintenance, and DIY electronics projects. 🔹 Key Features Ultra-sharp stainless steel needle probes Standard 4mm banana plug connectors CAT III 1000V safety rating Maximum current rating: 10A Flexible PVC insulated cables Accurate low-resistance measurements Comfortable insulated probe handles Durable construction for long service life Compatible with most digital multimeters Ideal for PCB, SMD, IC and electrical testing 🔹 Technical Specifications Product Type: Digital Multimeter Test Leads Probe Type: Ultra Sharp Needle Probe Probe Colors: Red & Black Connector Type: 4mm Banana Plug Cable Material: PVC Insulated Probe Material: Stainless Steel / Metal Cable Length: Approx. 83cm Total Length: Approx. 103cm Maximum Current: 10A Maximum Voltage: 1000V Safety Rating: CAT III 1000V Measurement Type: Voltage, Current, Resistance, Continuity Compatibility: Most Digital Multimeters 🔹 Compatible With Fluke Multimeters Extech Multimeters Mastech Multimeters UNI-T Multimeters Victor Multimeters Sanwa Multimeters DT830 Series DT9205 Series Most multimeters with 4mm banana sockets 🔹 Applications Suitable for: Digital multimeters PCB testing SMD component testing IC pin testing LED testing Continuity testing Voltage measurement Current measurement Electronics repair Laboratory testing Industrial maintenance DIY electronics projects 🔹 Package Includes 1 × Red Multimeter Test Lead 1 × Black Multimeter Test Lead
Digital Multimeter Test Leads with Ultra Sharp Needle Probe & Banana Plug CAT III 1000V 10A
[Hook up wire] The Digital Multimeter Test Lead Kit is a high-quality replacement probe set designed for accurate electrical measurements and electronic troubleshooting. Featuring ultra-sharp stainless steel needle probes, these leads allow easy access to miniature IC pins, SMD components, PCB tracks, LEDs, and other small electronic devices without causing damage. The probes are fitted with standard 4mm banana plug connectors, making them compatible with most digital multimeters, clamp meters, bench meters, and testing equipment from brands such as Fluke, Extech, Mastech, Uni-T, Victor, Sanwa, and many more. Constructed using high-quality PVC insulated cables and durable metal probes, the leads provide excellent flexibility, low resistance, and long service life. The CAT III safety rating ensures safe operation up to 1000V with a maximum current rating of 10A, making them suitable for both electronics and electrical testing. The built-in protective finger guards improve operator safety, while the flexible cables remain tangle-free during continuous testing. These probes are ideal for laboratory work, electronics repair, field service, educational laboratories, industrial maintenance, and DIY electronics projects. 🔹 Key Features Ultra-sharp stainless steel needle probes Standard 4mm banana plug connectors CAT III 1000V safety rating Maximum current rating: 10A Flexible PVC insulated cables Accurate low-resistance measurements Comfortable insulated probe handles Durable construction for long service life Compatible with most digital multimeters Ideal for PCB, SMD, IC and electrical testing 🔹 Technical Specifications Product Type: Digital Multimeter Test Leads Probe Type: Ultra Sharp Needle Probe Probe Colors: Red & Black Connector Type: 4mm Banana Plug Cable Material: PVC Insulated Probe Material: Stainless Steel / Metal Cable Length: Approx. 83cm Total Length: Approx. 103cm Maximum Current: 10A Maximum Voltage: 1000V Safety Rating: CAT III 1000V Measurement Type: Voltage, Current, Resistance, Continuity Compatibility: Most Digital Multimeters 🔹 Compatible With Fluke Multimeters Extech Multimeters Mastech Multimeters UNI-T Multimeters Victor Multimeters Sanwa Multimeters DT830 Series DT9205 Series Most multimeters with 4mm banana sockets 🔹 Applications Suitable for: Digital multimeters PCB testing SMD component testing IC pin testing LED testing Continuity testing Voltage measurement Current measurement Electronics repair Laboratory testing Industrial maintenance DIY electronics projects 🔹 Package Includes 1 × Red Multimeter Test Lead 1 × Black Multimeter Test Lead
Crocodile Alligator Clip 50 mm Black and Red
Description: An alligator clip, also called a spring clip, creates a temporary electrical connection using a simple mechanical design.It gets its name because the jaws resemble an alligator or crocodile’s mouth, opening and closing to grip objects securely.The clip works like a spring-loaded clothespin that uses tapered, serrated jaws to hold wires or metal parts tightly.A spring pushes the jaws together, allowing the clip to grip objects and maintain a reliable electrical connection.Manufacturers design these clips for electronics testing, enabling quick connections without soldering or permanent joints.One jaw usually connects to a wire by crimping or soldering for efficient current transfer.Some clips use a bent jaw forming the inner contact of a 15 mm to 4 mm female banana jack.This design allows a fast, non-permanent connection between test circuits and laboratory instruments.A plastic cover or boot surrounds the clip to prevent short circuits and protect users from accidental shocks.Engineers and students use these clips widely in testing, prototyping, and educational experiments. Applications: Technicians use small clips (15 mm–40 mm) in electrical laboratories, schools, and college labs for quick test connections.Large clips, called automotive clips or battery clamps, use solid copper for low resistance and strong current flow.Users connect these large clips with thick insulated copper cables between automobile batteries or heavy electrical systems.Hobbyists and professionals rely on these clips for safe, reusable, and efficient electrical connections. Product Example: Check the Crocodile Alligator Clip 50 mm – Red and Black, made from durable stainless steel with a protective plastic shroud.Its spring-loaded jaws open wide to grip different wire sizes securely during testing or circuit connection.The serrated teeth ensure a strong, slip-free grip that maintains stable electrical contact during operation. Package Includes: 1 × Crocodile Alligator Clip 50 mm (Black and Red)
Metal Alligator Prong Clips Electrical Clamp 50 mm
[Power Connector] The 50mm Metal Alligator Clip (Crocodile Clip) Set is a durable electrical test accessory designed for temporary electrical connections in testing, measurement, and prototyping applications. Manufactured from high-quality conductive metal with insulated protective sleeves, these clips provide excellent electrical conductivity and secure clamping performance. The spring-loaded wide-opening jaws firmly grip wires, terminals, battery posts, PCB test points, and other electrical contacts, making them ideal for use with multimeters, power supplies, battery chargers, laboratory equipment, and DIY electronic projects. The insulated red and black protective covers help identify positive and negative connections while providing additional safety during operation. Their compact size and lightweight design make them suitable for hobbyists, technicians, students, and professionals. 🔹 Key Features High-quality metal alligator clips Strong spring-loaded jaws Wide opening for secure grip Insulated protective covers Excellent electrical conductivity Durable corrosion-resistant construction Easy wire attachment by soldering or crimping Lightweight and compact Suitable for low-voltage electrical testing Reusable and long service life 🔹 Technical Specifications Product Type: Alligator Clip / Crocodile Clip Material: Nickel-Plated Steel Insulation Material: PVC Clip Length: 50mm Available Sizes: 40mm (Short) / 50mm (Long) Jaw Type: Spring Loaded Color: Red & Black Weight: Approx. 8g (Pair) Connection Type: Crimp / Solder Application: Electrical Testing & Temporary Connections 🔹 Applications Suitable for: Digital multimeters Power supplies Battery testing Arduino projects Raspberry Pi projects Electronics prototyping Laboratory experiments School science projects DIY electronics Automotive electrical testing PCB testing Temporary electrical connections 🔹 Package Includes 1 × Red 50mm Alligator Clip 1 × Black 50mm Alligator Clip
Out of stock74HC47 or 74LS47 IC BCD to seven segment decoder driver
[Logic Gates IC] 7447 or 74LS47 decodes BCD into 7 Segments, which means it accepts a binary coded decimal or BCD Values as input and decoded into a pattern that drives a 7-segment for displaying digits 0 to 9, so its name is BCD to 7 segment driver or decoder. Its input is 4 lines BCD data and generates complements as output. The generation of complement data of BCD is internally so no coding or programming is required to generate it. Specification Large Voltage range Has open collector output which directly drives indicator Has a wide range of operating conditions No need for external resistors because of internal pull-ups No high-speed termination because of the input clamp diode 4 the number of input lines and 7 output lines Pin Description BCD input 2 BCD input 3 LT RBO RBI BCD input 4 BCD input 1 GND E D C B A G F VCC
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
74HC08 Quad 2-Input AND Gate IC (7408 IC) DIP-14 Package
[Logic Gates IC] 74HC08 is Quad 2-Input AND Gate 14 Pin IC. The 74HC08 provides provides 4 independent 2-input AND gates with standard push-pull outputs. The device is designed for operation with a power supply range of 2.0V to 6.0V. It 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. The HC08 has 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:- 4 AND gates in a 14-Pin DIP Package Outputs Directly Interface to CMOS, NMOS and TTL Large Operating Voltage Range Wide Operating Conditions Specifications:- Type: DIP Bipolar Voltage Rating: 2.0 to 6.0V Temperature Rating: 0 to 70Deg C Number of: 14 Pins Mounting: Through Hole
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
USB QC3.0 QC2.0 DC to DC Buck Converter Charging Module Fast Quick Charger
[Step Down Buck Converter] This module accepts a 6-24V Input and supports USB QC3 Charging on the output. It takes care of regulating the signals on the USB Data transer lines and offers fast charging when a compatible device is connected. Great for adding USB charging in your next project. Supports: QC2.0, QC3.0, MTK PE1.1/2.0, FOR Apple, FOR Samsung AFC,FOR Huawei FCP, FOR Spreadtrum SFCP Input voltage: DC 6~30V Output voltage: default 5V, adjust range 3~12V according to fast charging protocol Output capacity: single-port rated current 2.4A, Rated power 24W Protection measures: Output overvoltage protection, limit the output voltage does not exceed 13V (in the case of chip failure); input with a fuse. This mini DC-DC step-down voltage converter module supports 6-24V voltage input and 5V 3A output with input polarity reverse protection and output overvoltage protection, short circuit protection. It adopts synchronous rectification technology to ensure ultra-high power conversion up to 97.5% to take full use of your input power. On-board female type A USB port with identification circuit perfectly fit for smartphones as well as it can be useful to power or recharge any electronic gadget which required 5V input power up to 3A Features: Non-isolated buck module (BUCK) synchronous rectification Maximum Output Current: 3A MAX Conversion efficiency: can up to 97.5% (6.5V step down to 5V 0.7A) (after short reverse protection and fuses test value) Switch frequency: 500KHz Output Ripple: 10mV around (12V to 5V3A) 20M bandwidth Output indicator: The output voltage indicator is red Operating temperature: Industrial grade (-40 to + 85 ) (the higher the ambient temperature, the lower the output power) Output overvoltage protection: Yes, input 1.5A fuse, output 5V have 300W TVS tube clamp protection. Flat copper inductor, improve conversion efficiency With output overvoltage protection. There is a 1.5A fuse, output 5V have 300W TVS tube protect your USB device High-quality USB port Output voltage indicator (RED) Small size, Compact Size Input with reverse polarity protection diode, will not damage when input connect incorrectly Ultra-low static current, 0.85 mA only. Do not need to add switch when connected to the car battery, can be connected to car cigarette lighter cable or ACC power supply cable Ultra-small size, 26.4 (L) * 15 (W) * 7.4 (H) mm Input voltage range: 6V-32V Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge Output power: up to 24W (5V/3.4A, 9V/2.5A, 12V/2A, etc.) Output voltage cable compensation function Conversion efficiency: 90%-97% Support multiple fast charging protocols Input overvoltage and undervoltage protection Input overcurrent protection Output overcurrent, short circuit protection Machine over temperature protection Support fast charge agreement Support DCP protocol, BC1.2, Apple, Samsung protocol Support Huawei Fast Charge Protocol FCP/SCP Support Huawei Fast Charge Protocol AFC Support Spreadtrum Fast Charge Protocol SFCP · Support Qualcomm QC2.0 and 3.0 Support MTK PE1.1/PE2.0 Precautions: please enhance heat dissipation when fully used for load output(i.e. 5V@3A with 24V Input). For the ideal case (i.e. 5V@2A output with 12V Input) it does not need to enhance heat dissipation. Applications: Solar panel to mobile phone charging Car charging retrofit Driving recorder power supply Home power supply, smart plug modification Fast charge adapter Package Includes: 1 x USB Step Down DC-DC Converter Module
Out of stock10 pcs of Double-ended Crocodile/Alligator Clips Roach Clips Electrical DIY Test Leads
[Uncategorized] This is Double-ended Crocodile/Alligator Clips Roach Clips Electrical DIY Test Leads. It is an insulation-covered clip connected to the wire from both ends. Alligator clips can also be used as miniature clamps to hold parts together. In addition, it is also useful for gluing and wires together for soldering. 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. Easy for installation and safety for use with the insulation colored soft plastic insulation cover. FEATURES : Type: double-ended crocodile/alligator clips. Easy for installation Colour: red, green, yellow, white and black, etc. Color-coded insulated leads allow you to test circuits without crossing wires or causing shorts with each other. safety for use with the color-coded insulation plastic cover on clips. PACKAGE INCLUDES : 10 x Double-ended Crocodile/Alligator Clip Wires.
Out of stockL293D Stepper Motor Driver IC Chip
[Semiconductor ICs] L293D Stepper Motor Driver IC is a dual H-bridge motor driver integrated circuit (IC). Motor drivers act as current amplifiers since they take a low-current control signal and provide a higher-current signal. This higher current signal is used to drive the motors. Features: Featuring Unit rode L293 and L293D Wide Supply-Voltage Range: 4.5 V to 36 V Separate Input-Logic Supply Internal ESD Protection Thermal Shutdown High-Noise-Immunity Inputs Output Current 1 A Per Channel (600 mA for L293D) Peak Output Current 2 A Per Channel (1.2 A for L293D) Output Clamp Diodes for Inductive Transient Suppression (L293D) Applications: High Current Motor Driver IC. Dual H-bridge for controlling up to two motors at a time. Ideal for Inductive load decoupling from the main/control unit. A wide voltage range allows for an adaptive voltage range control. Package Includes: 1 x L293D Driver IC
Out of stockIC 74HC86 Quad 2-Input Exclusive or Gate Dip
[Logic Gates IC] The MM74HC86 EXCLUSIVE OR gate utilizes advanced silicon-gate CMOS technology to achieve operating speeds similar to equivalent LS-TTL gates while maintaining the low power consumption and high noise immunity characteristic of standard CMOS integrated circuits. These gates are fully buffered and have a fanout of 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: Typical propagation delay: 9 ns Wide operating voltage range: 2–6V Low input current: 1 µA maximum Low quiescent current: 20 µA maximum (74 Series) Output drive capability: 10 LS-TTL loads Outputs Directly Interface to CMOS, NMOS, and TTL High Noise Immunity Characteristic of CMOS Devices In Compliance with JEDEC Standard No. 7A Requirements ESD Performance: HBM 2000 V; Machine Model 200 V Chip Complexity: 56 FETs or 14 Equivalent Gates These are Pb−Free Devices Package Includes: 1 x IC 74HC86 Quad 2-Input Product Images are shown for illustrative purposes only and may differ from actual product.
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.