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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Potentiometer 10k / 100k
Rotary/trim pot. Values: 10kΩ / 100kΩ. 3 pins (end A, wiper, end B). Variable voltage divider for ADC. Linear taper 'B'.
UPS Rocker Switch Red 6 Pin ON-OFF-ON with Indicator
[Mechanical Switches] UPS Rocker Switch Red 6 Pin ON-OFF-ON with Indicator – BR34 The UPS Rocker Switch Red 6 Pin ON-OFF-ON with Indicator (BR34) is a durable rocker switch designed for reliable switching applications. It features a 6-pin DPDT configuration, copper contacts and a large rocker design with an indicator light for convenient operation and status indication. With a rated voltage of up to 250V and a rated current of 6A, it is suitable for UPS systems, power strips, stabilizers, water dispensers, coffee machines, automobiles, USB hubs, machinery and other electrical equipment. ⭐ Key Features 6-pin rocker switch ON-OFF-ON switching function DPDT switch configuration Red color Built-in indicator Copper contact construction Illuminated design Large rocker size Rated current up to 6A Rated voltage up to 250V Durable construction Suitable for panel-mount applications Indicator helps provide visual switching/status indication 📋 Technical Specifications Model: BR34 Switch Type: Rocker Switch Switch Function: ON-OFF-ON Number of Pins: 6 Switch Throw Type: DPDT Rated Voltage: 250V Rated Current: 6A Illuminated: Yes / With Indicator Indicator: Built-in indicator Contact Plating: Copper Material: Copper and Iron Color: Red Size: Big Rocker Mechanical Life: Up to 5 years Mounting: Panel Mount Application: Electrical and electronic equipment 🔧 Applications UPS systems Power strips Voltage stabilizers Water dispensers Coffee machines Automobiles USB hubs Electrical machinery DIY electrical projects Control panels Power switching applications 🛠️ Installation Ensure the power supply is switched OFF before installation. Identify the correct terminals according to the required DPDT switching configuration. Connect the wires securely to the appropriate terminals. Ensure the connected load does not exceed the 6A rated current. Mount the switch firmly into the appropriate panel cutout. Verify the indicator wiring and rating before connection. 📦 Package Includes 1 × UPS Rocker Switch Red 6 Pin ON-OFF-ON with Indicator Model: BR34 ⚠️ Precautions Do not exceed the rated 250V / 6A specification. Switch OFF the power supply before installation or wiring. Ensure proper insulation of all electrical connections. Use suitable wiring according to the connected load. Verify the indicator voltage specification before connecting it to the circuit. Verify the pin configuration before connecting the switch. Do not directly connect the indicator to a voltage for which it is not rated.
UPS Rocker Switch Black 6 Pin ON-OFF-ON
[Mechanical Switches] UPS Rocker Switch Black 6 Pin ON-OFF-ON – BR34 The UPS Rocker Switch Black 6 Pin ON-OFF-ON (BR34) is a durable rocker switch designed for reliable switching applications. It features a 6-pin DPDT configuration, copper contacts and a large rocker design for convenient operation. With a rated voltage of up to 250V and a rated current of 6A, it can be used in power strips, stabilizers, water dispensers, coffee machines, automobiles, USB hubs, machinery and other electrical equipment. ⭐ Key Features 6-pin rocker switch ON-OFF-ON switching function DPDT switch configuration Black color Copper contact construction Non-illuminated design Large rocker size Rated current up to 6A Rated voltage up to 250V Durable construction Suitable for panel-mount applications 📋 Technical Specifications Model: BR34 Switch Type: Rocker Switch Switch Function: ON-OFF-ON Number of Pins: 6 Switch Throw Type: DPDT Rated Voltage: 250V Rated Current: 6A Illuminated: No / Non-Illuminated Contact Plating: Copper Material: Copper and Iron Color: Black Size: Big Rocker Mechanical Life: Up to 5 years Mounting: Panel Mount Application: Electrical and electronic equipment 🔧 Applications UPS systems Power strips Voltage stabilizers Water dispensers Coffee machines Automobiles USB hubs Electrical machinery DIY electrical projects Control panels Power switching applications 🛠️ Installation Ensure the power supply is switched OFF before installation. Identify the correct terminals according to the required DPDT switching configuration. Connect the wires securely to the appropriate terminals. Ensure the connected load does not exceed the 6A rated current. Mount the switch firmly into the appropriate panel cutout. 📦 Package Includes 1 × UPS Rocker Switch Black 6 Pin ON-OFF-ON ⚠️ Precautions Do not exceed the rated 250V / 6A specification. Switch OFF the power supply before installation or wiring. Ensure proper insulation of all electrical connections. Use suitable wiring according to the connected load. This is a non-illuminated switch. Verify the pin configuration before connecting the switch to your circuit.
ESP32-C3 Super Mini Development Board With Headers Pins
[ESP Modules] Ultra Compact • Wi-Fi & BLE 5.0 • USB Type-C • Perfect for IoT & Embedded Projects The ESP32-C3 Super Mini Development Board is a compact, feature-rich development board built around the powerful ESP32-C3 SoC from Espressif. Powered by a 32-bit RISC-V single-core processor running at up to 160MHz, it combines 2.4GHz Wi-Fi, Bluetooth 5.0 Low Energy (BLE), and low-power operation in an ultra-small form factor. Designed for IoT, smart home, wireless communication, automation, and embedded system development, the ESP32-C3 Super Mini offers 4MB Flash memory, 400KB SRAM, multiple GPIOs, ADC, PWM, UART, SPI, and I2C interfaces for connecting sensors, displays, relays, and other peripherals. The onboard USB Type-C interface simplifies programming and power supply, while the built-in USB-to-Serial functionality enables quick firmware uploading without requiring additional programmers. Fully compatible with Arduino IDE, ESP-IDF, PlatformIO, and MicroPython, it is suitable for beginners, students, makers, and professional developers. Its ultra-compact breadboard-friendly design makes it ideal for portable and space-constrained projects where performance, wireless connectivity, and energy efficiency are essential. Note: Programming, software configuration, driver installation, firmware flashing, and coding-related issues are not covered under return or replacement. Users are expected to troubleshoot software-related issues independently. ⭐ Features Powerful ESP32-C3 32-bit RISC-V processor CPU frequency up to 160MHz Built-in 2.4GHz Wi-Fi (802.11 b/g/n) Integrated Bluetooth 5.0 Low Energy (BLE) Ultra-compact Super Mini design Breadboard-friendly layout USB Type-C interface for programming and power 4MB onboard Flash memory 400KB SRAM Multiple GPIO, ADC, PWM, UART, SPI & I2C interfaces Low power consumption with Deep Sleep mode Onboard programmable LED Compatible with Arduino IDE, ESP-IDF, PlatformIO & MicroPython Ideal for IoT, automation, robotics, and wireless applications 📋 Technical Specifications Product Type: Development Board Board Model: ESP32-C3 Super Mini Microcontroller: ESP32-C3 Processor Architecture: 32-bit RISC-V CPU Frequency: Up to 160MHz Core: Single Core Flash Memory: 4MB SRAM: 400KB Wi-Fi Standard: IEEE 802.11 b/g/n (2.4GHz) Bluetooth: Bluetooth 5.0 Low Energy (BLE) Operating Voltage: 3.3V Input Voltage: 5V via USB Type-C or 3.3V External USB Interface: USB Type-C GPIO: Multiple Digital GPIO Pins Analog Input: Up to 6 ADC Channels PWM: Supported UART: Supported SPI: Supported I2C: Supported USB-to-Serial: Onboard Onboard LED: User Programmable (GPIO8) Power Consumption: Ultra Low (Deep Sleep ≈ 43µA) Dimensions: Approx. 22.5 × 18 mm Headers: Pre-Soldered 🔧 Applications Suitable for: Internet of Things (IoT) Smart Home Automation Wireless Sensor Networks Home Automation Systems Bluetooth Low Energy Devices Wi-Fi Enabled Controllers Robotics Projects Data Logging Systems Remote Monitoring Industrial Automation Portable Embedded Devices Educational Learning DIY Electronics Projects Wearable Electronics Rapid Prototyping 📦 Package Includes 1 × ESP32-C3 Super Mini Development Board Pin Headers ⚠️ Note Programming, firmware installation, software configuration, and driver-related issues are not covered under warranty, return, or replacement. Please verify board compatibility and install the appropriate development environment before programming. Soldered and non-soldered header pin depend on stock
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
5 Pin Mini SPDT Relay 12V 10A 250V PCB Mount Electromagnetic Relay
[Relay Module, Relays] 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 10A The 12V PCB Mount Sugar Cube SPDT Relay is a compact Single Pole Double Throw (SPDT) electromagnetic relay designed for switching AC and DC electrical loads using a microcontroller, sensor, automation circuit, or other low-power control system. Its compact PCB-mount design makes it suitable for DIY electronics, home automation, security systems, switching circuits, motor control, lighting control, and embedded applications. The relay features a 12V DC coil and a 5-pin SPDT configuration consisting of two coil terminals, COM (Common), NO (Normally Open), and NC (Normally Closed) contacts. When the coil is energized, the internal contact switches between the NC and NO terminals. With contact ratings of up to 10A at 250V AC, 10A at 125V AC, 12A at 120V DC, and 10A at 28V DC, this relay is suitable for a wide range of electrical switching applications. ⭐ Key Features SPDT (Single Pole Double Throw) relay 12V DC coil Compact Sugar Cube design 5-pin configuration PCB mounting type 10A @ 250V AC contact rating 10A @ 125V AC contact rating 12A @ 120V DC contact rating 10A @ 28V DC contact rating Coil resistance: approximately 270Ω Approximately 45mA nominal coil current 50/60Hz frequency specification Fast switching response Suitable for microcontroller and sensor-controlled switching Ideal for automation and control applications 📋 Technical Specifications Product Type: PCB Mount Relay Relay Type: SPDT (Single Pole Double Throw) Contact Configuration: 1 Form C Number of Pins: 5 Coil Voltage: 12V DC Trigger Voltage: 12V DC Coil Resistance: 270Ω Nominal Coil Current: Approximately 45mA Frequency: 50/60Hz Maximum AC Load: 10A @ 250V AC Maximum AC Load: 10A @ 125V AC Maximum DC Load: 12A @ 120V DC Maximum DC Load: 10A @ 28V DC Operating Time: 10ms Release Time: 5ms Mounting Type: PCB Mount Contact Terminals: COM / NO / NC Coil Terminals: Coil End 1 / Coil End 2 🔌 Pin Configuration Coil End 1: One terminal of the 12V DC relay coil Coil End 2: Other terminal of the 12V DC relay coil COM: Common switching contact NO: Normally Open contact NC: Normally Closed contact When the relay coil is not energized, COM is connected to NC. When the 12V DC coil is energized, COM switches from NC to NO. 🛠️ How It Works The relay uses an electromagnetic coil to mechanically switch an electrical circuit. Applying 12V DC to the coil energizes the relay and changes the contact position. A load connected between COM and NC remains connected when the relay is inactive. A load connected between COM and NO remains disconnected until the relay coil is energized. This allows a low-power control circuit such as an Arduino, microcontroller, sensor, timer, or automation controller to control a higher-current AC or DC load. 🔧 Applications Arduino Projects Microcontroller Projects Sensor-Controlled Switching Home Automation Security Systems Lighting Control Fan Control Motor Control Pump Control Power Supply Switching Industrial Control Systems Embedded Electronics DIY Electronics Projects 📦 Package Includes 1 × 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 10A ⚠️ Precautions Use a suitable 12V DC supply for the relay coil. Do not exceed the specified contact voltage and current ratings. Check the COM, NO, NC, and coil terminals before wiring. Use suitable flyback protection when driving the relay coil from sensitive electronic circuits. Use appropriate suppression/protection components for inductive loads such as motors, solenoids, and coils. Provide sufficient PCB insulation and clearance when switching mains voltage. Disconnect power before changing or modifying wiring. Do not touch exposed mains-voltage terminals during operation.
RS-12 Green 2 Pin Mini Rocker Switch – 6A 250V ON/OFF Standard SPDT Plastic Switch
[Mechanical Switches] 🔘 RS-12 Green 2 Pin Mini Rocker Switch 6A 250V ON/OFF Panel Mount Switch Compact Design • 6A Current Rating • Durable Iron Contacts • Reliable Power Switching The RS-12 Green 2 Pin Mini Rocker Switch is a high-quality, compact ON/OFF panel mount switch designed for reliable switching in electrical and electronic applications. Manufactured using durable materials and iron contacts, this rocker switch ensures dependable performance, smooth operation, and long service life. With a 6A @ 250V AC rating, it is suitable for controlling AC or DC power in home appliances, power supplies, battery chargers, DIY electronics, industrial equipment, automation systems, and control panels. Its 2-pin SPST (Single Pole Single Throw) configuration provides simple ON/OFF switching, while the compact snap-in design allows easy installation even in limited panel space. The attractive green rocker actuator offers clear ON/OFF indication, making it easy to identify the switch position. Designed for up to 100,000 mechanical operations, the RS-12 rocker switch is an excellent choice for both professional and hobby electronics projects. ⭐ Features High-quality RS-12 mini rocker switch Compact 2-pin panel mount design Simple ON/OFF switching operation Rated for 6A at 250V AC Durable plastic housing Iron contact terminals Smooth and reliable switching performance Long mechanical life up to 100,000 cycles Easy snap-in installation Suitable for AC and DC switching Ideal for industrial, commercial, and DIY applications 📋 Technical Specifications Product Name: RS-12 Green Mini Rocker Switch Product Type: Rocker Switch Switch Function: ON/OFF Switch Configuration: SPST (Single Pole Single Throw) Number of Pins: 2 Rated Voltage: 250V AC Rated Current: 6A Power Rating: 250V / 6A Terminal Type: Solder Terminals Contact Material: Iron Housing Material: Plastic Illumination: Non-Illuminated Mechanical Life: Up to 100,000 Operations Mounting Type: Panel Mount (Snap-In) Color: Green Rocker with Black Housing Response Time: Instant RoHS Compliance: No 🔧 Applications Suitable for: Home Appliances Power Supplies Battery Chargers DIY Electronics Arduino Projects Raspberry Pi Projects Robotics Industrial Control Panels Automation Equipment Audio Equipment LED Lighting Systems Electronic Toys Test Equipment Consumer Electronics Repair & Maintenance 📦 Package Includes 1 × RS-12 Green 2 Pin Mini Rocker Switch ⚠️ Note Verify the switch rating before connecting high-voltage or high-current loads. Disconnect power before installation or maintenance. Product color, markings, and dimensions may vary slightly depending on the manufacturing batch.
RS-12 Blue 2 Pin Mini Rocker Switch – 6A 250V ON/OFF Standard SPDT Plastic Switch
[Mechanical Switches] 🔵 RS-12 Blue 2 Pin Mini Rocker Switch 6A 250V ON/OFF Panel Mount Switch Compact Design • 6A Current Rating • Durable Iron Contacts • Reliable Power Switching The RS-12 Blue 2 Pin Mini Rocker Switch is a high-quality, compact ON/OFF panel mount switch designed for reliable switching in electrical and electronic applications. Manufactured using durable materials and iron contacts, this rocker switch ensures dependable performance, smooth operation, and long service life. With a 6A @ 250V AC rating, it is suitable for controlling AC or DC power in home appliances, power supplies, battery chargers, DIY electronics, industrial equipment, automation systems, and control panels. Its 2-pin SPST (Single Pole Single Throw) configuration provides simple ON/OFF switching, while the compact snap-in design allows easy installation even in limited panel space. The attractive blue rocker actuator provides clear ON/OFF indication while giving electronic equipment a modern and professional appearance. Designed for up to 100,000 mechanical operations, the RS-12 rocker switch is an excellent choice for both professional and hobby electronics projects. ⭐ Features High-quality RS-12 mini rocker switch Compact 2-pin panel mount design Simple ON/OFF switching operation Rated for 6A at 250V AC Durable plastic housing Iron contact terminals Smooth and reliable switching performance Long mechanical life up to 100,000 cycles Easy snap-in installation Suitable for AC and DC switching Ideal for industrial, commercial, and DIY applications 📋 Technical Specifications Product Name: RS-12 Blue Mini Rocker Switch Product Type: Rocker Switch Switch Function: ON/OFF Switch Configuration: SPST (Single Pole Single Throw) Number of Pins: 2 Rated Voltage: 250V AC Rated Current: 6A Power Rating: 250V / 6A Terminal Type: Solder Terminals Contact Material: Iron Housing Material: Plastic Illumination: Non-Illuminated Mechanical Life: Up to 100,000 Operations Mounting Type: Panel Mount (Snap-In) Color: Blue Rocker with Black Housing Response Time: Instant RoHS Compliance: No 🔧 Applications Suitable for: Home Appliances Power Supplies Battery Chargers DIY Electronics Arduino Projects Raspberry Pi Projects ESP32 Projects Robotics Industrial Control Panels Automation Equipment Audio Equipment LED Lighting Systems Electronic Toys Test Equipment Consumer Electronics Repair & Maintenance 📦 Package Includes 1 × RS-12 Blue 2 Pin Mini Rocker Switch ⚠️ Note Verify the switch rating before connecting high-voltage or high-current loads. Disconnect power before installation or maintenance. Product color, markings, and dimensions may vary slightly depending on the manufacturing batch.
RS-12 Yellow 2 Pin Mini Rocker Switch 6A 250V ON/OFF Standard SPDT Plastic Switch
[Mechanical Switches] 🟡 RS-12 Yellow 2 Pin Mini Rocker Switch 6A 250V ON/OFF Panel Mount Switch Compact Design • 6A Current Rating • Durable Iron Contacts • Reliable Power Switching The RS-12 Yellow 2 Pin Mini Rocker Switch is a high-quality, compact ON/OFF panel mount switch designed for reliable switching in electrical and electronic applications. Manufactured using durable materials and iron contacts, this rocker switch ensures dependable performance, smooth operation, and long service life. With a 6A @ 250V AC rating, it is suitable for controlling AC or DC power in home appliances, power supplies, battery chargers, DIY electronics, industrial equipment, automation systems, and control panels. Its 2-pin SPST (Single Pole Single Throw) configuration provides simple ON/OFF switching, while the compact snap-in design allows easy installation even in limited panel space. The bright yellow rocker actuator provides clear visibility and easy identification of the switch, making it an excellent choice for control panels, machinery, DIY electronics, and industrial equipment. Designed for up to 100,000 mechanical operations, the RS-12 rocker switch delivers reliable performance for long-term use. ⭐ Features High-quality RS-12 mini rocker switch Compact 2-pin panel mount design Simple ON/OFF switching operation Rated for 6A at 250V AC Durable plastic housing Iron contact terminals Smooth and reliable switching performance Long mechanical life up to 100,000 cycles Easy snap-in installation Suitable for AC and DC switching Ideal for industrial, commercial, and DIY applications 📋 Technical Specifications Product Name: RS-12 Yellow Mini Rocker Switch Product Type: Rocker Switch Switch Function: ON/OFF Switch Configuration: SPST (Single Pole Single Throw) Number of Pins: 2 Rated Voltage: 250V AC Rated Current: 6A Power Rating: 250V / 6A Terminal Type: Solder Terminals Contact Material: Iron Housing Material: Plastic Illumination: Non-Illuminated Mechanical Life: Up to 100,000 Operations Mounting Type: Panel Mount (Snap-In) Color: Yellow Rocker with Black Housing Response Time: Instant RoHS Compliance: No 🔧 Applications Suitable for: Home Appliances Power Supplies Battery Chargers DIY Electronics Arduino Projects Raspberry Pi Projects ESP32 Projects Robotics Industrial Control Panels Automation Equipment Audio Equipment LED Lighting Systems Electronic Toys Test Equipment Consumer Electronics Repair & Maintenance 📦 Package Includes 1 × RS-12 Yellow 2 Pin Mini Rocker Switch ⚠️ Note Verify the switch rating before connecting high-voltage or high-current loads. Disconnect power before installation or maintenance. Product color, markings, and dimensions may vary slightly depending on the manufacturing batch.
Out of stock1.3 Inch I2C IIC 128×64 OLED Display Module – White
[LED/LCD Display Module] The 1.3 Inch I2C 128×64 OLED Display Module is a compact, high-contrast display designed for Arduino, ESP32, NodeMCU, Raspberry Pi, and other microcontroller-based projects. This module uses OLED (Organic Light Emitting Diode) technology, providing bright white pixels with excellent contrast and wide viewing angles. Powered by the SSH1106 controller chip, the display offers smooth graphics rendering and reliable performance. With a resolution of 128×64 pixels, it can display text, graphics, icons, and sensor data clearly even in small embedded systems. The module communicates using the I2C (IIC) interface, requiring only 4 pins (VCC, GND, SDA, SCL), which helps save valuable GPIO pins on your microcontroller. It operates within a voltage range of 3.3V to 5V, making it compatible with most development boards. Unlike traditional LCD displays, OLED displays do not require a backlight because each pixel emits its own light. This results in lower power consumption, better contrast, and faster response times. Due to its compact size, lightweight design, and simple wiring, the display module is ideal for IoT devices, sensor monitors, battery indicators, portable electronics, robotics projects, and DIY electronics applications. ⭐ Features 1.3 Inch OLED Display Module 128 × 64 pixel resolution White pixel display SSH1106 display controller I2C / IIC communication interface Requires only 4 pins High contrast and wide viewing angle Low power consumption Compatible with Arduino, ESP32, NodeMCU, Raspberry Pi Ideal for embedded and IoT projects 🔧 Technical Specifications Display Size: 1.3 inch Resolution: 128 × 64 pixels Controller Chip: SSH1106 Display Area: 34.5 × 19 mm Interface Type: IIC / I2C Pixel Color: White Driving Voltage: 3.3V – 5V Operating Temperature: -40°C to 70°C Physical Dimensions Length: 35.5 mm Width: 33.5 mm Height: 4 mm Weight: 7 g 📦 Package Includes 1 × 1.3 Inch 128×64 OLED Display Module (White)
ESP32 Development Board with WiFi & Bluetooth – CH340C USB Type-C
[ESP Modules] The ESP32 Development Board with WiFi & Bluetooth (CH340C, Type-C) is a powerful and versatile microcontroller board designed for modern wireless and IoT applications. It features a dual-core processor and integrated 2.4GHz WiFi and Bluetooth (Classic + BLE) connectivity. This board includes an onboard CH340C USB-to-Serial converter, which allows easy programming and communication without requiring an external crystal oscillator. The USB Type-C port provides a stable and reversible connection for power and data. With a wide range of GPIO pins and peripherals such as ADC, DAC, PWM, UART, SPI, and I2C, this board is perfect for building home automation systems, smart devices, IoT nodes, robotics controllers, sensor networks, web servers, and wireless projects. It is fully compatible with Arduino IDE, ESP-IDF, and MicroPython, making it suitable for beginners, students, and professional developers. 🔹 Key Features Based on ESP32 dual-core microcontroller Built-in WiFi 802.11 b/g/n and Bluetooth v4.2 (Classic + BLE) Onboard CH340C USB-to-Serial converter (no external crystal required) Modern USB Type-C connector for power and programming Dual-core CPU up to 240 MHz for high-performance applications Multiple GPIO pins with ADC, DAC, PWM support Supports Arduino IDE, ESP-IDF, and MicroPython Low-power modes including deep sleep for battery-powered projects Compact design with breadboard-friendly layout Ideal for IoT, automation, robotics, smart home, and DIY electronics 🔹 Technical Specifications Microcontroller: ESP32 CPU: Dual-core Tensilica LX6, up to 240 MHz Flash Memory: 4 MB (typical, may vary by batch) SRAM: 520 KB Wireless Connectivity: WiFi: 2.4 GHz, 802.11 b/g/n Bluetooth: v4.2, Classic + BLE USB Interface: USB Type-C USB-to-Serial Chip: CH340C Operating Voltage: 3.3 V Input Voltage: 5 V via USB Logic Level: 3.3 V GPIO Pins: 30+ multifunction pins Peripherals: ADC, DAC, PWM, UART, SPI, I2C, I2S Clock Frequency: Up to 240 MHz Programming Support: Arduino IDE, ESP-IDF, MicroPython Onboard Components: Reset & Boot buttons, voltage regulator, status LEDs Form Factor: Standard ESP32 Dev Board size 🔹 Applications Internet of Things (IoT) projects Home and industrial automation Smart home devices Robotics and motor control Wireless sensor networks Web servers and cloud-connected devices Educational and training projects DIY electronics and prototyping 🔹 Package Contents 1 × ESP32 Development Board with WiFi & Bluetooth (CH340C, USB Type-C)
USB Type-A Male Connector Plug (Solder Type) – DIY USB 2.0 Charging & Data Cable Connector
[USB Socket] 📖 Product Description Build your own USB cables easily with this USB Type-A male connector plug.It’s perfect for DIY cable making, USB repairs, and electronic projects.This connector features a strong nickel-plated metal shell, 4 solder pins, and a standard USB 2.0 interface for reliable performance in both power and data transmission. Use it to repair broken cables, create custom USB extensions, or prototype devices that connect to any USB-compatible port (like power banks, chargers, Arduino boards, and embedded systems). Please check our others items: Click Here ⚙️ Key Features ✅ Standard USB Type-A male plug – fits all USB 2.0 Type-A ports ✅ DIY solder type design – easy to connect wires securely ✅ Durable metal housing – ensures longevity and protection ✅ Stable power & data transfer – ideal for charging and communication ✅ Perfect for makers, technicians, and electronic enthusiasts 📐 Technical Specifications Specification Details Connector Type USB Type-A Male Interface Standard USB 2.0 Pin Count 4 Pins Mount Type Cable / Solder Type Shell Material Nickel-Plated Metal Insulator Material High-Temperature Plastic Color Silver with White Insulator Rated Voltage 5V DC Rated Current Up to 2A Operating Temperature −20 °C to +70 °C Dimensions Approx. 20 mm × 18 mm × 4.5 mm Weight Approx. 2 g 💡 Applications DIY USB charging cables Custom USB extension cables USB data and power projects Embedded systems, Arduino, Raspberry Pi Replacement connector for broken USB plugs 📦 Package Includes 1 × USB Type-A Male Connector Plug (Solder Type)
ESP32 38-Pin Development Board – IoT Microcontroller with WiFi & Bluetooth
[ESP Modules] Description The ESP32 38-Pin Development Board is a versatile and cost-effective microcontroller platform perfect for a wide range of IoT, automation, and wireless communication projects. Powered by the ESP32 SoC, this board offers integrated WiFi and Bluetooth (BLE) capabilities, making it ideal for developing smart home devices, industrial control systems, robotics, and DIY electronics. For the best IoT experience, you can pair this board with our LoRa SX1278 Module for long-range communication or integrate it with our 0.96-inch OLED Display for real-time data display. Need reliable power control? Combine it with our 2-Channel Relay Module with Optocoupler for safe switching of external devices. Compatible with popular platforms like Arduino IDE, MicroPython, and PlatformIO, this ESP32 board is user-friendly for both beginners and professionals. The board features 38 GPIO pins, enabling you to connect a variety of sensors, actuators, and other peripherals—available in our IoT Components category. Key Features: ESP32 Dual-Core 32-bit LX6 Processor Built-in 2.4 GHz WiFi and Bluetooth 4.2 (BLE) 38 GPIO Pins supporting multiple digital and analog functions Interfaces: UART, SPI, I2C, PWM, ADC, DAC Ultra-low power operation modes ideal for battery-powered IoT devices Supports Arduino IDE, MicroPython, and other environments Onboard micro-USB connector for easy power and programming Reset and boot buttons for firmware flashing Breadboard-friendly form factor Applications: IoT development projects Smart home automation – compatible with Vihaan IoT Gateway Solutions Wireless data logging systems Robotics and drone controllers Industrial monitoring devices Sensor networks – connect with our DHT11/DHT22 Temperature Sensors Specifications: Chipset: ESP32 (Generic) Operating Voltage: 3.3V (5V tolerant inputs) Flash Memory: 4MB Connectivity: WiFi IEEE 802.11 b/g/n, Bluetooth 4.2 BLE Interfaces: GPIO, UART, SPI, I2C, ADC, DAC, PWM USB Interface: Micro USB Form Factor: 38-Pin, breadboard compatible Package Includes: 1 x ESP32 38-Pin Generic Development Board
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
IC 7805 TO-220 Linear Voltage Regulator LM7805 Made ST
[Voltage Regulator IC] LM7805 5V Linear Voltage Regulator IC 7805 The L78M05CV is a fixed output, three-terminal precision positive voltage regulator in 3 pins TO-220 package. This regulator can provide local on-card regulation by eliminating distribution problems associated with single-point regulation. The L78M05CV fixed voltage regulator is designed with thermal overload protection that shuts down the circuit when subjected to an excessive power overload condition, internal short circuit protection that limits maximum current the circuit will pass and output transistor safe area compensation that reduces the output short circuit as the voltage across the pass transistor is increased. If adequate heat sinking is provided then this positive voltage regulator can deliver over 0.5A output current. Features: Fixed output voltage is 5V Output current is 0.5A Dropout voltage is 2V Maximum DC input voltage is 35V Output transition SOA protection Output voltage tolerance is 4% Operating temperature range 0°C to 125°C Applications: Power Management. Note: Image may vary from actual product in terms of Manufacturer/Brand name according to availability.
Out of stock2.8 inch SPI Touch Screen Module TFT Interface 240*320
[LED/LCD Display Module] This TFT display is big (2.8″ diagonal) bright and colorful! 240×320 pixels with individual RGB pixel control, this has way more resolution than a black and white 128×64 display. As a bonus, this display has a resistive touchscreen attached to it already, so you can detect finger presses anywhere on the screen. This display has a controller built into it with RAM buffering so that almost no work is done by the microcontroller. The display can be used in two modes: 8-bit and SPI. For 8-bit mode, you’ll need 8 digital data lines and 4 or 5 digital control lines to read and write to the display (12 lines total). SPI mode requires only 5 pins total (SPI data in, data out, clock, select, and d/c) but is slower than the 8-bit mode. In addition, 4 pins are required for the touchscreen (2 digital, 2 analogs). This 2.8 inch SPI Touch Screen Module is wrapped up into an easy-to-use breakout board, with SPI connections on one end and 8-bit on the other. Both are 3-5V compliant with high-speed level shifters so you can use with any microcontroller. If you’re going with SPI mode, you can also take advantage of the onboard MicroSD card socket to display images. Stock version: 1.1V For more displays click below, LED/LCD Display Features : It shows the color depth of 262K/65K. Need at least 4 IOs from your MCU The display has a wide viewing angle. Big display with good resolution. Package Includes : 1 x 2.8-inch SPI Touch Screen Module TFT Interface 240 x 320 1 x Stylus Pen Buy other components to attach to this LCD Display Arduino Boards Raspberry Pi Dupont Cables
JHD 16×2 Character LCD Display With Blue Backlight
[LED/LCD Display Module] If you want to add some visual output to your Arduino projects, you’ll need a display. If you need only a little to display, the LCD 16×2 Parallel LCD Display is a quite good solution. This is a Original JHD 16×2 Character LCD Display With Blue Backlight as there are many fake JHD Displays in the Market. This is a great blue backlight LCD display. It is fantastic for Arduino based project. This LCD 16×2 Parallel LCD Display with Blue Backlight is very easy to interface with Arduino or Other Microcontrollers. This is LCD 16×2 Parallel LCD Display that provides a simple and cost-effective solution for adding a 16×2 White on RGB Liquid Crystal Display into your project. The display is 16 character by 2 line display that has a very clear and high contrast white text upon a blue background/backlight. The values shown on the display can be either simple text or numerical values read by the sensors, such as temperature or pressure, or even the number of cycles that the Arduino is performing. For more displays click below, LED/LCD Display Features : 16 characters wide, 2 rows White text on the yellow background Single LED backlight included can be dimmed easily with a resistor or PWM. Can be fully controlled with only 6 digital lines! (Any analog/digital pins can be used) Specifications: Model： JHD659 B/W Display： 16×2 character Outline： 80.0×36.0×14.5 VA： 64.5×14.5 Controller： SPLC780D Character： 2.95×4.35 Driver： 1/16 LCD： STN Blue Negative Backlight： White LED Package Includes : 1 x JHD 16×2 Character LCD Display With Blue Backlight
16A 250V AC DPST ON-OFF Rocker Switch
[Mechanical Switches] This is a basic DPST ON-OFF Rocker Switch for your projects. No screws required, it simply clips into place. This is a two-pin switch that is easy to use, simply cut one of the two power wires and solder each of the ends to the unit. This 16A 250V AC DPST ON-OFF Rocker Switch is perfect for controlling power to electronic circuits, robots, etc. We have carefully selected the best On/Off Rocker Switch with a high load rating and the perfect size to for all general-purpose On/Off applications. This rocker switch has two positions – one on position and another off position. The rocker switch stays in the one till it is pressed and changed to the other position. It has two large pins on the backside to which wires can be soldered and connected to your circuit. The On/Off Rocker Switch is the simplest and easiest power control switch for your project. It comes with tabs on the top and bottom which secure it onto an enclosure without the need for any screws. On and Off positions are clearly marked which help users identify the current switch position during usage. This switch is great to turn on/off and control DC Motors in Robotics, Car and Motorcycle DC Motors, DC Motors in Industrial Machines, Water Dispensers, etc. We have sourced the best switch with a high load rating of 16A at 250VAC which should be suitable for most applications. Please note: 1. Switching Mode: ON-OFF 2. Structure: DPST Features: Positions Marked on the rocker: I, O (On and Off) for easy identification Long Switching Life: 50000-100000 cycles Easy installation, No Screws or Nuts required Used widely for on/off power control, car, motorcycle, boat, some machines, water dispenser, etc. Package Includes: 1 x 16A 250V AC DPST ON-OFF Rocker Switch
Out of stockLCD2004 Parallel LCD Display Yellow Backlight with IIC/I2C Interface
[LED/LCD Display Module] If you want to add some visual output to your Arduino projects, you’ll need a display. If you need moderate data on display, the LCD2004 Parallel LCD Display is a quite good solution. This is LCD2004 Parallel LCD Display that provides a simple and cost-effective solution for adding a 20×4 Black on RGB Liquid Crystal Display into your project. The display is 20 character by 4 line display has a very clear and high contrast black text upon a yellow background/backlight. This is great yellow backlight LCD display. It is fantastic for Arduino based project. This LCD2004 Parallel LCD Display with Yellow Backlight is very easy to interface with Arduino or Other Microcontrollers. The values shown on the display can be either a simple text or numerical values read by the sensors, such as temperature or pressure, or even the number of cycles that the Arduino is performing. One thing to consider is you’ll waste about 8 Pins on your Arduino for the display to get working. Luckily there exists an I2C adapter that you can solder right onto the pins of the display. So all you need to connect are the I2C pins, which shows a good library and little of coding. For more displays click below, LED/LCD Display Features : 20 characters wide, 4 rows Black text on the yellow background The module can easily interface with an MCU The module is a low-power consumption character LCD Module with a built-in controller Single LED backlight included can be dimmed easily with a resistor or PWM. Can be fully controlled with only 6 digital lines! (Any analog/digital pins can be used) Package Includes : 1 x LCD2004 Parallel LCD Display Yellow Backlight with IIC/I2C Interface
Arduino Uno R3 CH340G ATMega328P Development Board Compatible with Arduino
[Arduino Boards, Development Board] Product Description The Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 USB to Serial converter chip, instead of using an Atmega16U2 chip. We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the USB port. During normal operation, this board is identical to the more expensive version without CH340 chip. Features The Arduino Uno R3 is a micro-controller board base on the ATmega328 . It has 14 digital input/output pins (of which 6 can be used as PWM outputs); 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything need to support the micro-controller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get start. The Arduino Uno R3 differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) program as a USB-to-serial converter. Revision 2 of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU mode. Note: The Arduino Uno R3 reference design can use an Atmega8, 168, or 328, Current models use an ATmega328, but an Atmega8 is shown in the schematic for reference. The pin configuration is identical on all three processors. Package Includes 1 x Arduino Uno R3 CH340G ATMega328P Development Board
18650 SMD/SMT High-Quality Single Battery Holder
[Lithium Battery Holder] 18650 SMD/SMT High-Quality Single Battery Holder The 18650 SMD/SMT Single Battery Holder is a compact PCB-mount battery holder designed to securely hold a single 18650 Li-ion rechargeable cell. Its SMD mounting pins allow the holder to be directly soldered onto a PCB, eliminating the need for loose battery wires and making it suitable for compact electronic designs. Multiple electronics retailers list the same holder with ABS construction, gold-plated contacts, stainless-steel contact material and dimensions of approximately 77 × 21 × 15mm. ⭐ Key Features Designed for 1 × 18650 lithium-ion cell SMD/SMT PCB mounting design Lightweight and compact Directly mounts onto a PCB Eliminates loose battery wiring Gold-plated brass contact points Stainless-steel battery contact/shrapnel High-quality ABS body Secure battery holding mechanism Easy battery insertion and replacement Reusable design Good environmental and temperature resistance Suitable for compact PCB projects 📋 Technical Specifications Product Type: 18650 SMD/SMT Battery Holder Number of Cells: 1 Compatible Battery: 18650 Li-ion cylindrical cell Mounting Type: SMD / SMT Body Material: ABS Contact Material: Stainless Steel Contact Plating: Gold Contact Construction: Gold-plated brass contact points with stainless-steel battery retention contacts Color: Black Operating Temperature: -40°C to 180°C Dimensions: Approx. 77 × 21 × 15mm (L × W × H) Weight: Approx. 8g 🔋 Battery Compatibility This holder is designed specifically for a single 18650 cylindrical Li-ion cell. It provides mechanical support and electrical contacts between the battery and the PCB; the holder itself does not provide battery charging, overcharge protection or BMS functionality. 🔧 Applications PCB battery-powered projects DIY electronics Arduino projects ESP32 and microcontroller projects Robotics Portable electronic devices Battery-powered gadgets IoT devices Custom PCB designs Rechargeable battery projects Prototyping and development boards 🛠️ Installation Position the holder on the PCB according to the PCB footprint. Ensure the positive and negative contacts are correctly oriented. Solder the SMD terminals to the PCB. Allow the solder joints to cool and inspect them for proper connection. Insert a compatible 18650 battery with the correct polarity. Verify the battery voltage and circuit polarity before powering the project. 📦 Package Includes 1 × 18650 SMD/SMT High-Quality Single Battery Holder ⚠️ Precautions Use only a compatible 18650 cylindrical Li-ion cell. Check the positive and negative polarity before inserting the battery. The holder is only a mechanical/electrical battery holder; it does not include a charger or BMS. Do not short-circuit the contacts. Do not force an incorrectly sized battery into the holder. Ensure the PCB solder joints are secure before inserting the battery. Do not exceed the electrical limits of the holder or PCB. Remove the battery before soldering or servicing the PCB.
6A 250V AC red color copper 2 pins SPST small plastic rocker switches
[Mechanical Switches] 🔴 RS-12 Red 2 Pin Mini Rocker Switch 6A 250V ON/OFF Panel Mount Switch Compact Design • 6A Current Rating • Copper Contacts • Reliable Power Switching The RS-12 Red 2 Pin Mini Rocker Switch is a premium-quality, compact ON/OFF panel mount switch designed for reliable switching in electrical and electronic applications. Manufactured using durable materials and copper contacts, this rocker switch provides excellent electrical conductivity, low contact resistance, and long-lasting performance. Rated for 6A at 250V AC, it is ideal for controlling AC and DC power in home appliances, power supplies, battery chargers, DIY electronics, industrial equipment, automation systems, and control panels. Its 2-pin SPST (Single Pole Single Throw) configuration offers simple ON/OFF switching, while the compact snap-in design allows easy installation in limited panel space. The bright red rocker actuator provides clear ON/OFF identification and gives equipment a modern, professional appearance. With a mechanical life of up to 100,000 operations, the RS-12 rocker switch is suitable for both commercial and hobby applications. ⭐ Features Premium-quality RS-12 mini rocker switch Compact 2-pin panel mount design Simple ON/OFF switching operation Rated for 6A at 250V AC Durable plastic housing Copper contacts for excellent conductivity Low contact resistance Smooth and reliable switching performance Long mechanical life up to 100,000 cycles Easy snap-in installation Suitable for AC and DC switching Ideal for industrial, commercial, and DIY applications 📋 Technical Specifications Product Name: RS-12 Red Mini Rocker Switch Product Type: Rocker Switch Switch Function: ON/OFF Switch Configuration: SPST (Single Pole Single Throw) Number of Pins: 2 Rated Voltage: 250V AC Rated Current: 6A Power Rating: 250V / 6A Terminal Type: Solder Terminals Contact Material: Copper Housing Material: Plastic Illumination: Non-Illuminated Mechanical Life: Up to 100,000 Operations Mounting Type: Panel Mount (Snap-In) Color: Red Rocker with Black Housing Response Time: Instant RoHS Compliance: No 🔧 Applications Suitable for: Home Appliances Power Supplies Battery Chargers DIY Electronics Arduino Projects Raspberry Pi Projects ESP32 Projects Robotics Industrial Control Panels Automation Equipment Audio Equipment LED Lighting Systems Electronic Toys Test Equipment Consumer Electronics Repair & Maintenance 📦 Package Includes 1 × RS-12 Red 2 Pin Mini Rocker Switch ⚠️ Note Ensure the switch rating matches your application before installation. Disconnect power before wiring or servicing the switch. Product appearance and markings may vary slightly depending on the manufacturing batch.