All products · 18 of 1440
Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Quarky
Educational STEM controller board. USB programmable. Block coding + Python/Arduino-like. Built-in sensors (mic, light, IMU) + ports for external sensors/servos. 5V input (USB/power bank). BLE/Wi-Fi optional depending on version.
Only 2 leftOtto
Biped robot kit. Servos: 4 micro servos (legs/feet). MCU: Arduino Nano compatible. Sensors: ultrasonic + buzzer. Power: 5V (battery pack). Programming: Arduino IDE / block coding. Functions: walk/dance/avoid.
Out of stock6S 18650 Li-Po Lithium Battery Capacity Indicator Module
[Li-Ion Capacity Indicator] This battery type capacity indicator module display shows the display is more intuitive and more beautiful. A wider range of applications, nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries, electric equipment can be used. This display has a reverse connection function, even if the positive and negative connection will not burn. To use the display just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube will display the real-time battery power. Features :- Battery type of electricity quantity display. Wide application fields: lithium battery. Using Method: connect display board positive and negative port with tested battery positive. and negative port, the digital tube will display real-time battery electricity quantity. Digital Color: outline red, display block blue (when the battery electricity quantity is full, it will be all on). Specs: Input Supply Voltage: 19.8 ~ 25.2VDC Colour Display Reverse Connection Protection Wide Variety of applications Length: 41 mm Width: 20 mm Approx Weight: 5 gm Application: Battery pack Consumer electronics product 22.2V voltage rating Power supply Power bank and charger Package Includes :- 1 X 6S 18650 Li-Po Lithium Battery Capacity Indicator Module * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stock7S 18650 Li-Po Lithium Battery Capacity Indicator Module
[Li-Ion Capacity Indicator] This battery type capacity indicator module display shows the display is more intuitive and more beautiful. A wider range of applications, nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries, electric equipment can be used. This display has a reverse connection function, even if the positive and negative connection will not burn. To use the display just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube will display the real-time battery power. Features :- Battery type of electricity quantity display. Wide application fields: lithium battery. Using Method: connect display board positive and negative port with tested battery positive. and negative port, the digital tube will display real-time battery electricity quantity. Digital Color: outline red, display block blue (when the battery electricity quantity is full, it will be all on). Specs: Input Supply Voltage: 23.1 ~ 29.4VDC Colour Display Reverse Connection Protection Wide Variety of applications Length: 41 mm Width: 20 mm Approx Weight: 5 gm Application: Battery pack Consumer electronics product 25.9V voltage rating Power supply Power bank and charger Package Includes :- 1 X 7S 18650 Li-Po Lithium Battery Capacity Indicator Module * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stock2S 18650 Li-Po Lithium Battery Capacity Indicator Module
[Li-Ion Capacity Indicator] This battery type capacity indicator module display shows the display is more intuitive and more beautiful. A wider range of applications, nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries, electric equipment can be used. This display has a reverse connection function, even if the positive and negative connection will not burn. To use the display just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube will display the real-time battery power. Features :- Battery type of electricity quantity display. Wide application fields: lithium battery. Using Method: connect display board positive and negative port with tested battery positive. and negative port, the digital tube will display real-time battery electricity quantity. Digital Color: outline red, display block blue (when the battery electricity quantity is full, it will be all on). Specs: Input Supply Voltage: 6.6 ~ 8.4VDC Colour Display Reverse Connection Protection Wide Variety of applications Length: 41 mm Width: 20 mm Approx Weight: 5 gm Application: Battery pack Consumer electronics product 7.4V voltage rating Power supply Power bank and charger Package Includes :- 1 X 2S 18650 Li-Po Lithium Battery Capacity Indicator Module * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stock1S 18650 Li-Po Lithium Battery Capacity Indicator Module
[Li-Ion Capacity Indicator] This battery type capacity indicator module display shows the display is more intuitive and more beautiful. A wider range of applications, nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries, electric equipment can be used. This display has a reverse connection function, even if the positive and negative connection will not burn. To use the display just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube will display the real-time battery power. Features :- Battery type of electricity quantity display. Wide application fields: lithium battery. Using Method: connect display board positive and negative port with tested battery positive. and negative port, the digital tube will display real-time battery electricity quantity. Digital Color: outline red, display block blue (when the battery electricity quantity is full, it will be all on). Specs: Input Supply Voltage: 3.3 ~ 4.2VDC Colour Display Reverse Connection Protection Wide Variety of applications Length: 41 mm Width: 20 mm Approx Weight: 5 gm Application: Battery pack Consumer electronics product 3.7V voltage rating Power supply Power bank and charger Package Includes :- 1 X 1S 18650 Li-Po Lithium Battery Capacity Indicator Module * Product Images are shown for illustrative purposes only and may differ from actual product.
XH-M312 TPA3118D2 45W*2 Digital Amplifier Board Dual Channel Audio Amplifier Board Module
[Amplifier Board] Description XH-M312 TPA3118D2 Dual-Channel Digital Amplifier Board – 45W Output Upgrade your audio experience with the XH-M312 Digital Amplifier Board, powered by the advanced TPA3118D2 digital amplifier chip. This high-performance board delivers 45W output per channel, offering exceptional audio clarity and power. Designed for hobbyists and audio enthusiasts, it features user-friendly terminal blocks, making it a perfect ready-to-use solution for your electronic projects. Key Features: Powerful Dual-Channel Output: Delivers 45W per channel, perfect for driving a pair of 30W double speakers. Advanced Protection Mechanisms: Built with a brand-new C chip that includes: Over-voltage protection Over-current protection Over-heat protection Short-circuit protection This ensures reliable performance and longevity, even during demanding operations. Easy Connectivity: Equipped with 2P audio output terminals with a 5mm pitch, allowing secure and straightforward speaker connections. Versatile Application: Ideal for DIY audio projects, home audio systems, and electronic enthusiasts seeking high-quality sound performance. Compatibility: Perfect for superior audio output, making it suitable for custom speaker setups, audio experiments, or enhancing your existing audio systems. Boost Your Audio Performance Today! Bring your projects to life with the XH-M312 TPA3118D2 Dual-Channel Digital Amplifier Board—a reliable, high-power, and easy-to-use solution for outstanding sound quality. Why Choose the XH-M312 Amplifier Board? Whether you’re a seasoned DIYer or new to electronics, this amplifier board is built for convenience and reliability. The terminal block design simplifies connections, while the robust protection features safeguard your setup, ensuring worry-free operation. Package Includes: 1 x XH-M312 TPA3118D2 45W*2 Digital Amplifier Board
2 Pin 5.08mm Pitch Pluggable Screw Terminal Block
[Terminal Connector] 2 Pin 5.08mm Pitch Pluggable Screw Terminal Block Connector The 2 Pin 5.08mm Pitch Pluggable Screw Terminal Block Connector is a compact and reliable connector designed for connecting wires to PCBs where space is limited. Its pluggable design allows convenient connection and disconnection, while the screw terminals securely hold the wires in place. With a standard 5.08mm (0.2-inch) pitch, this terminal block is suitable for a wide range of PCB applications, including prototyping boards, control circuits, power supply boards, miniature rack systems, and telecom equipment. The terminal block supports wire sizes from 12 to 22 AWG, providing flexibility for various low- and medium-power wiring applications. Its compact construction helps maintain high contact density while saving valuable PCB space. ⭐ Key Features 2-pin pluggable screw terminal block 5.08mm pitch Compact space-saving design Secure screw connection with tension sleeve Easy plug-in and removal Supports 12–22 AWG wires High contact force for reliable connection Helps minimize temperature rise at the contact Suitable for high-density PCB applications Compatible with standard 5.08mm PCB spacing Suitable for prototyping and electronic projects 📋 Technical Specifications Product Type: Pluggable Screw Terminal Block Number of Pins: 2 Pitch: 5.08mm Terminal Type: Screw Terminal Wire Size: 12–22 AWG Connection Type: Wire-to-PCB Mounting: PCB Mount Design: Pluggable / Detachable Contact Mechanism: Screw with Tension Sleeve Standard: Connection in accordance with EN-VDE Standard 🔧 Applications PCB Wire Connections Power Supply Boards Control Circuits Industrial Electronics Miniature Rack Systems Telecom Equipment Prototyping Boards DIY Electronics Projects Arduino & Microcontroller Projects Automation Systems LED Driver Boards Battery & Power Connections 📦 Package Includes 1 × 2 Pin 5.08mm Pitch Pluggable Screw Terminal Block Connector ⚠️ Note Check the PCB footprint and 5.08mm pitch before installation. Ensure wires are properly inserted and securely tightened. Do not exceed the electrical rating of the terminal block in your application.
1N4007 General Purpose Rectifier Diode DO-41 (Through Hole) Made RAPID
[Diode] 1N 4007 – 1A General Purpose Rectifier Axial 4007 Diode 1N4007 is a rectifier diode, designed specifically for circuits that need to convert alternating current to direct current. It can pass currents of up to 1 A, and have a peak inverse voltage (PIV) rating of 1,000 V. Characteristics: Maximum Recurrent Peak Reverse Voltage 1000V Maximum RMS Voltage 700V Maximum DC Blocking Voltage 1000V Average Forward Current: 1.0A Peak Forward Surge Current: 30A Maximum Instantaneous Forward Voltage: 1.0V Maximum DC Reverse Current At Rated DC Blocking Voltage: 5.0µA @ 25°C Typical Junction Capacitance: 15pF Typical Reverse Recovery Time: 2.0us Mounting Type: Through Hole Operating Temperature: -55°C ~ 150°C Useful Resources:
Out of stock4 Pin 2.54mm Pitch Pluggable Screw Terminal Block
[Terminal Connector] 4 Pin 2.54mm Pitch Pluggable Screw Terminal Block is a compact and versatile terminal block. It finds its use in connecting wires to the PCB. Because of the small size, the terminal block allows for the connection of two conductors on a PCB, where space is premium. This terminal block has screws to keep the wires in place. It can hold wires from 14 to 22 AWG. This terminal block is ideally suited to miniature rack systems or telecoms equipment, which demand high contact density. As each terminal has a single corresponding pin spaced every 0.1″ (2.54 mm), these terminal blocks can be used with prototyping boards and PCB holes intended for standard 0.1″ male and female headers (if there is sufficient clearance from nearby components). Features: Saves space due to the small design Screw connection with tension sleeve Maximum contact force ensures a low-temperature rise Connection in accordance with EN-VDE Standard. Package Includes: 1 x 4 Pin 2.54mm Pitch Pluggable Screw Terminal Block. ( 3 pcs.)
Out of stockPS2 Joystick Module Breakout Sensor
[Breakout Board] Dual Axis XY Joystick Module This is JoyStick Module PS2 Breakout Sensor very similar to the ‘analog’ joysticks on PS2 (PlayStation 2) controllers. Directional movements are simply two potentiometers – one for each axis. Pots are ~10k each. This joystick also has a select button that is actuated when the joystick is press down. With the help of this Joystick Module, you can measure position coordinates on the X and Y axis by moving the “hat”. It also contains a switch that is press-able by pushing the “hat”.It also contains a switch that is press-able by pushing the “hat” down. Similar to the XBOX controller. The X and Y axes are two 10k potentiometers which control 2D movement by generating analog signals. When the module is in working mode, it will output two analog values, representing two directions. This module uses the 5V power supply, and value, when reading through analog input, would be about 2.5V, a value will increase with joystick movement and will go up till maximum 5V; the value will decrease when the joystick is moved in other direction till 0V. Applications: 1. As square wave signal generator which generates a square wave signal 2. To provide a signal to the stepping motor driver 3. Adjustable pulse generation for chip use 4. Produce variable pulse signal, the control-related circuit (PWM dimming, speed) Module Description: Frequency is divided into three ranges: 1. XXX (no decimal point): the smallest unit is 1Hz, the range 1Hz-999Hz 2. XX.X (decimal point in ten): The minimum unit is 0.1Khz; the range of 0.1KHz-99.9KHz 3. X.X.X.(there is three decimal point): the smallest unit is 1Khz; the range 1KHz-150KHz Frequency Display Example: 1. ”100″ indicates that the PWM output pulse of 100Hz 2. ”54.1″ indicates that the PWM output pulse of 54.1KHz 3. ”1.2.4.” Indicates that the PWM pulse output 124KHz 4. Duty Cycle in the range:0 to 100 5. Three frequencies duty cycle is the same, all the parameters are non-volatile Features: 2.54mm pin interface leads Long service life and stable performance Standard interface and electronic building blocks Widely use in Arduino DIY projects Cross rocker as a two-way 10K resistor, with the rocker in a different direction.
Out of stock4 Way/Pole Speaker Terminals Long Socket/Block/Connector With Push Release
[Terminal Connector] Description Generally designed for speakers, amplifiers, and music players, these terminals have multiple uses in applications requiring quick equipment interconnection as they come with push release and an Insert mechanism to easily interconnect two devices with the wires. The spring-loaded mechanism is very easy to use, when you want to connect the device, accomplish it just by pushing the lever down and insert the wire and when you want to release the existing wire then just bring that lever down again and now you can take out your wire and disconnect your device. This Terminal block or connector comes with easy to mount two through holes which allow the user to easily screw-mount it to any application area. It's mostly used where the devices are not in a fixed place or always in changing its place like in DJ shows or music events where the location of events keep on changing and thus the equipment/devices used also have to be mobile and need to be connected with such connectors which are easy to plug in and plug out whenever needed. Feature Used where easy accessibility and fast connection are a priority. Generally designed for speakers, amplifiers and music players, and other quick-connect devices. Easy to Mount with two mounting holes Specification Size: 64x18mm Weight: 10gm per piece. Mounting Hole Pitch: 3mm Package 1x 5 (4 Way/Pole Speaker Terminals Block/Connector With Push Release/Insert Spring Loaded Mechanism.) OR 1 x 10 (4 Way/Pole Speaker Terminals Block/Connector With Push Release/Insert Spring Loaded Mechanism.)
3 Pin 5.08mm Pitch Plug-in Screw Terminal Block Connector
[Terminal Connector] 3 Pin 5.08mm Pitch Plug-in Screw Terminal Block Connector The 3 Pin 5.08mm Pitch Plug-in Screw Terminal Block Connector is a compact and reliable electrical connector designed for securely connecting wires to PCBs. Its plug-in design allows convenient connection and disconnection while the screw terminals provide a firm and stable grip on the connected wires. Made with a durable PBT (Polybutylene Terephthalate) housing, the connector offers good mechanical strength, heat resistance, and electrical insulation. The terminal contacts are made from nickel-plated brass, while the pin header uses tin-plated brass for reliable electrical conductivity and corrosion resistance. The compact and lightweight design makes this terminal block suitable for power connections, control circuits, industrial electronics, DIY projects, and PCB-based applications. ⭐ Key Features 3-pin plug-in screw terminal block 5.08mm pin pitch Secure screw-type wire connection Easy plug-in and removal design Tin-plated brass pin header Nickel-plated brass contacts Durable PBT housing Good electrical insulation Heat-resistant construction Compact and lightweight Suitable for PCB mounting 📋 Technical Specifications Product Type: Plug-in Screw Terminal Block Connector Number of Pins: 3 Pitch: 5.08mm Connector Type: Plug-in / Pluggable Terminal Block Terminal Type: Screw Terminal Pin Header Material: Tin-Plated Brass Contact Material: Nickel-Plated Brass Housing Material: PBT (Polybutylene Terephthalate) Flammability Rating: UL94-V0 Mounting: PCB Mount Connection Type: Wire-to-PCB 🔧 Applications PCB Power Connections Control Panels Industrial Electronics Power Supply Boards Motor Controller Boards Arduino & Microcontroller Projects DIY Electronics Automation Systems LED Driver Boards Battery & Power Distribution Electronic Prototyping 📦 Package Includes 1 × 3 Pin 5.08mm Pitch Plug-in Screw Terminal Block Connector ⚠️ Note Ensure the wire is securely tightened inside the screw terminal before powering the circuit. Check the connector pitch and PCB footprint before installation. Actual color and appearance may vary slightly depending on the manufacturing batch.
Out of stock125kHz RFID Card
[Proximity Sensor] 125 KHz RFID Proximity Cards for Attendance and Access Control This is a 125KHz RFID Card used for Contactless transmission of data and supplies energy with no battery needed. Its Operating distance is Up to 100mm depending on antenna geometry. The operating frequency is 125KHz and the Data transfer speed is 106 kbit/s. It is featured with Data integrity of 16 Bit CRC, parity, bit coding bit counting which allows Anti-collision. These cards are typically used in ticketing transactions: <100 ms including backup management. APPLICATIONS : Public transportation Access control Event Ticketing Gaming & identity Features: Contactless transmission of data and supply energy (no battery needed) Anticollision EEPROM 1Kbit, organized in 16 sectors, each district two passwords User-definable access conditions for each memory block Data retention of 10 years. Write endurance 100 000 cycles Security Individual key set per sector (per application) to support multi-application with key hierarchy A unique serial number for each device Transport key protects access to EEPROM on-chip delivery Note: The color and design of the tag will be shipped randomly depending upon availability.
Out of stock12V 6 Channel with Light Coupling Relay Module
[Relay Module] This 6 Road/Channel Relay Module (with light coupling) 12V module meets the safety standard as control areas and load area have the isolation groove. Optical coupling isolation module. The triggering of the 6 Road/Channel Relay Module is reliable, more stable. The double FR–4 circuit board design, high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 8 Channel 12V Relay Module are isolated to protect any delicate control circuitry. A wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on can control it. The use of such high-voltage relay eliminates the risk of heating up of the relay as electromechanical relay limit the current consumption in accordance with a voltage rating. Module interface: The positive (according to the relay voltage VCC: connect power supply) GND: connect power negative IN1: relay module (effective) high-level trigger signal trigger end IN2: relay module (effective) high-level trigger signal trigger end IN3: relay module (effective) high-level trigger signal trigger end IN4: relay module (effective) high-level trigger signal trigger end IN5: relay module (effective) high-level trigger signal trigger end IN6: relay module (effective) high-level trigger signal trigger end IN7: relay module (effective) high-level trigger signal trigger end IN8: relay module (effective) high-level trigger signal trigger end Meaning of High level and Low-level High-level trigger refers to using the anode voltage at the VCC connection way of a trigger and triggers the end when the trigger side has a positive voltage or to trigger voltage when the relay is off. Low-level trigger refers to using the negative voltage at the GND connection way of a trigger and triggers the end when the trigger side has 0 v low voltage or voltage to can trigger, the relay is off. Features : Equipped with high-current relay 10A@250VAC / 10A@30VDC It can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc High-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy connection A freewheeling diode to protect your microcontroller Input Signal Pin connected to Burg stick for easy accessibility LED status indicators to indicate the relay ON/OFF status Mounting holes provided Signal input with a high-level signal, the common and often start conduction; The relay can directly control all kinds of equipment and load; One often opened a normally closed contact; Blue KF301 terminal line more convenient. It is also able to control various appliances and other types of equipment with a large current. Red working status indicator lights are conducive to safe use. Widely used for all MCU control, industrial sector, PLC control, smart home control. Package Includes: 1 x 12V 6 Channel with Light Coupling Relay Module
Out of stock5V 6 Channel Low Level Relay Module with Light Coupling
[Relay Module] It is a 5V 6 Channel Low-Level Relay Module with Light Coupling. The relay normally open interface maximum load: AC 250V/10A, DC 30V/10A. With optocoupler isolation, strong drive capability, stable performance; trigger current 5mA, module working voltage: DC 5V. Each channel of the module can be triggered by a jumper to set a high level or a low level. Fault-tolerant design, even if the control line is disconnected, the relay will not move. With status indicator: power (green), 6-channel relay status indicator (red). All module size interfaces can be directly connected through the terminal block, which is convenient and practical. Features: 6-way relay output module contact capacity is 10A 250V. input IN1, IN2, IN3, IN4, IN5, IN6 signal, a low level is effective. Using single-chip design, reliable performance, strong anti-interference, no false triggering, superior performance. The trigger terminal has optocoupler isolation, the independent external power supply can trigger completely isolated. Each relay has an activity indicator light. With 4 fixed bolt holes, easy installation. Support all SCM control. It is applicable to the industrial sector, PLC control and home intelligent control. Package Includes: 1 x 5V 6 Channel Low-Level Relay Module with Light Coupling.
Out of stock3S 18650 Li-Po Lithium Battery Capacity Indicator Module
[Li-Ion Capacity Indicator] This battery type capacity indicator module display shows the display is more intuitive and more beautiful. A wider range of applications, nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries, electric equipment can be used. This display has a reverse connection function, even if the positive and negative connection will not burn. To use the display just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube will display the real-time battery power. Features :- Battery type of electricity quantity display. Wide application fields: lithium battery. Using Method: connect display board positive and negative port with tested battery positive. and negative port, the digital tube will display real-time battery electricity quantity. Digital Color: outline red, display block blue (when the battery electricity quantity is full, it will be all on). Specs: Input Supply Voltage: 11.1 ~ 12.6VDC Colour Display Reverse Connection Protection Wide Variety of applications Length: 41 mm Width: 20 mm Approx Weight: 5 gm Application: Battery pack Consumer electronics product 12V voltage rating Power supply Power bank and charger Package Includes :- 1 X 3S 18650 Li-Po Lithium Battery Capacity Indicator Module * Product Images are shown for illustrative purposes only and may differ from actual product.
PIR Motion Sensor Detector Module HC-SR501
[IR and PIR Sensors] If you want to build a device that is used to detect sense motion and almost always used to detect whether a human has moved in or out of the sensors range. Then this Sensor is needed for you. you can buy this sensor from https://roboman.in/ at a reasonable price The PIR Motion Sensor Detector Module HC SR501 allows you to sense motion. It is almost always used to detect the motion of a human body within the sensor’s range. It is often referred to using “PIR”, “Pyroelectric”, “Passive Infrared” and “IR Motion” sensors. The module has an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens. It has a delay time adjustment Potentiometer and sensitivity adjustment Potentiometer. Compatible with ARDUINO, RASPBERRY PI, AVR, PIC, 8051, etc. Note: The Product is available in two colors Blue and Green, therefore packing you may get any one of them. Circuit Diagram of PIR Sensor With Arduino: Features : Infrared Sensor with Control Circuit Board The Sensitivity and Holding Time are adjustable. Blockade time: 2.5s (Default) Sensitive Setting: Turn to Right, Distance Increases (About 7M); Turn to Left, Distance Reduce (About 3M) Time Setting: Turn to Right, Time Increases (About 200S); Turn to Left, Time Reduce (About 5S). Package Includes : 1 x PIR Motion Sensor Detector Module HC SR501