All products · 91 of 1440
Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Arduino UNO
Hardware development board (SMD/DIP). ATmega328P, 14 digital I/O, 6 analog, USB-B.
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.
Arduino Nano
Compact development board. ATmega328P, mini-USB. Breadboard friendly.
Arduino Mega
Development board. ATmega2560, 54 digital I/O, 16 analog, perfect for big projects.
Out of stock0.96 Inch Blue SPI OLED Display Module 7-Pin 128×64 – SSD1306
[LED/LCD Display] 0.96 Inch Blue SPI OLED Display Module 7-Pin 128×64 – SSD1306 The 0.96-inch Blue OLED Display Module is a compact graphical display based on the SSD1306 driver IC, featuring a 128×64 pixel resolution and blue monochrome display. This version has a 7-pin interface with a dedicated CS (Chip Select) pin, making it suitable for 4-wire SPI communication. The module is factory-configured for SPI and can also be modified for I2C/IIC communication on compatible board versions. With its compact size, wide viewing angle and low-power OLED technology, it is suitable for Arduino, ESP32, ESP8266, STM32, Raspberry Pi and other microcontroller projects. ⭐ Key Features 0.96-inch blue OLED display 128 × 64 pixel resolution SSD1306 driver IC 7-pin interface Dedicated CS (Chip Select) pin Factory configured for 4-wire SPI Supports SPI and I2C/IIC with appropriate configuration 3.3V/5V compatible on supported module versions No backlight required Low power consumption Wide viewing angle of more than 160° Compact PCB design Pre-soldered 7-pin male header Compatible with Arduino, ESP32, ESP8266, STM32 and Raspberry Pi projects 📋 Technical Specifications Display Type: OLED (Organic Light-Emitting Diode) Display Colour: Blue Display Size: 0.96 inch Driver IC: SSD1306 Resolution: 128 × 64 pixels Interface: SPI / I2C Default Interface: 4-wire SPI Input Voltage: 3.3V–5V Viewing Angle: >160° Module Dimensions: Approximately 27 × 27 × 4mm Operating Temperature: Approximately -30°C to +70°C Header: 7-pin male header, pre-soldered Display Type: Monochrome blue OLED 🔌 7-Pin Interface The 7-pin version provides the following connections: GND – Ground VCC – Power supply D0 / SCK / CLK – SPI clock D1 / MOSI / SDA – SPI data RES / RST – Display reset DC / A0 – Data/Command selection CS – Chip Select 🛠️ SPI Connection The module is normally supplied in 4-wire SPI configuration. For an Arduino Uno, a typical connection is: VCC → 5V GND → GND D0 → SCK / D13 D1 → MOSI / D11 RES → Digital I/O DC → Digital I/O CS → Digital I/O The dedicated CS pin allows the OLED to share the SPI bus with other devices such as SD cards or additional SPI peripherals. 🔄 I2C / IIC Configuration On compatible versions, the module can be converted from SPI to I2C by changing the appropriate resistor configuration on the PCB. The supplied board configuration may require: Moving the resistor from R3 to R1 Shorting R8 with solder Using D0 as SCL Using D1 as SDA Configuring DC for the I2C address The exact resistor positions can vary between board revisions, so check the markings on your particular PCB before modification. 🎯 Applications Arduino projects ESP32 projects ESP8266 projects STM32 development Raspberry Pi projects IoT devices Sensor displays Voltage/current meters Battery monitors Temperature displays Digital clocks Data loggers Portable electronic devices Robotics DIY measuring instruments Embedded systems Menu and status displays 💡 Advantages of OLED OLED technology is self-emissive, meaning the pixels produce their own light and do not require a conventional backlight. This provides high contrast, compact construction and a wide viewing angle while keeping power consumption relatively low. ⚠️ Important Notes This is the 7-pin SPI version, not the 6-pin version. The module is normally configured for SPI communication. Check the PCB labels before connecting the module. Do not exceed the specified supply voltage. Although many versions support 5V operation, the exact voltage tolerance can vary between board revisions. I2C operation may require hardware resistor modification. The actual PCB layout and component markings may vary slightly between production batches. Display colour: Blue. Libraries such as Adafruit SSD1306 and U8g2 can be used with compatible microcontrollers. 📦 Package Includes 1 × 0.96 Inch Blue SPI OLED Display Module
Type-C PD/QC/AFC Fast Charge Decoy Trigger Module – 5V/9V/12V/15V/20V Fixed Output
[Step UP Buck Converter] Type-C PD/QC/AFC Fast Charge Decoy Trigger Module – 5V/9V/12V/15V/20V Fixed Output The Type-C PD/QC/AFC Fast Charge Decoy Trigger Module is a compact USB Type-C power negotiation module designed to request a selected voltage from compatible USB Type-C fast chargers and power banks. It supports QC 2.0/3.0, AFC, PD 2.0 and PD 3.0 protocols, allowing compatible USB-C power sources to provide higher voltage outputs such as 5V, 9V, 12V, 15V or 20V. This module is useful for DIY electronics projects where a USB Type-C PD/QC charger needs to be used as a DC power source for equipment that does not have native USB-C fast-charging support. ⭐ Key Features USB Type-C fast-charge decoy/trigger module Supports PD 2.0 / PD 3.0 Supports QC 2.0 / QC 3.0 Supports Samsung AFC Fixed selectable voltage output Supports 5V / 9V / 12V / 15V / 20V output options Negotiates the required voltage from a compatible charger Suitable for USB-C power banks and PD adapters LED indicators for operating/status indication Compact and lightweight PCB design Useful for DIY power supply and electronics projects Plug-and-play operation with compatible USB-C power sources 📋 Technical Specifications Product Type: USB Type-C Fast Charge Trigger / Decoy Module Input Connector: USB Type-C Input Source: USB-C PD/QC/AFC compatible charger or power bank Supported Protocols: PD2.0, PD3.0, QC2.0, QC3.0, AFC Output Voltage: 5V / 9V / 12V / 15V / 20V Output Type: DC Voltage Selection: Fixed/selectable depending on module version Indicator: LED status indicators Application: DC power conversion and fast-charge voltage triggering 🔧 Applications Converting USB-C PD chargers into DC power supplies Powering DIY electronics projects Arduino and microcontroller projects LED applications Portable electronic equipment DIY laboratory power supplies DC motors and other suitable loads Router/modem power applications where the required voltage matches Powering electronics from USB-C PD power banks Replacing conventional DC adapters with USB-C PD sources 🛠️ How It Works The module does not boost the USB voltage itself. Instead, it communicates with a compatible USB-C power source and sends the required PD/QC/AFC negotiation request. For example, when connected to a compatible PD charger, the module can request: 5V → 9V → 12V → 15V → 20V The charger then provides the negotiated voltage at the module's DC output. ⚠️ Important Notes The connected USB-C charger or power bank must support the required fast-charging protocol and voltage. A standard 5V-only USB charger cannot normally provide 9V/12V/15V/20V through this module. Always verify the selected output voltage with a multimeter before connecting your device. Do not connect a device that requires a lower voltage than the selected output. The module is a trigger/decoy board, not a standalone DC-DC boost converter. Maximum available output power/current depends on the connected USB-C charger/power bank and the module's specifications. Do not short the output terminals. 20V output can damage 5V/9V/12V-only electronics if the wrong voltage is selected. Exact selectable voltages and current capability can vary between board versions. 📦 Package Includes 1 × Type-C PD/QC/AFC Fast Charge Decoy Trigger Module
XH-W1219 12V Digital Temperature Controller Module with Dual LED Display & Waterproof NTC Sensor
[Relay Module, Temperature Sensor] 🌡️ XH-W1219 12V Digital Temperature Controller Module with Dual LED Display & Waterproof NTC Sensor Dual LED Display • 12V DC Operation • 10A Relay Output • Heating & Cooling Modes • Waterproof NTC Sensor The XH-W1219 12V Digital Temperature Controller Module is a high-precision thermostat controller designed for automatic temperature monitoring and control in heating and cooling applications. Powered by 12V DC, this module features a dual LED display that simultaneously shows the current temperature and set temperature, making operation more convenient than the popular W1209 controller. Equipped with a waterproof NTC 10K temperature sensor, the XH-W1219 accurately measures temperatures from -50°C to +110°C. The onboard 10A relay output can directly control heaters, cooling fans, pumps, compressors, and other electrical loads within its rated capacity. The module is based on a Nuvoton microcontroller, which stores all settings in non-volatile memory, ensuring that user configurations are retained even after power loss. It supports both Heating (H) and Cooling (C) modes, adjustable hysteresis, temperature calibration, delay start, and high-temperature alarm functions. Ideal for incubators, aquariums, refrigeration systems, greenhouse automation, HVAC equipment, battery temperature monitoring, and industrial automation, the XH-W1219 provides reliable and accurate temperature control in a compact module. ⭐ Features Dual LED display for simultaneous temperature and setpoint display Operates on 12V DC High-accuracy waterproof NTC 10K temperature sensor Temperature control range from -50°C to +110°C Supports Heating and Cooling modes Built-in 10A relay output Adjustable temperature hysteresis Temperature calibration function Adjustable relay delay start High-temperature alarm function Stores settings in non-volatile memory Easy configuration using three push buttons High measurement accuracy (0.1°C resolution) Based on a Nuvoton MCU Compact PCB design with mounting holes 📋 Technical Specifications Product Type: Digital Temperature Controller Module Model: XH-W1219 Operating Voltage: 12V DC Display: Dual 3-Digit LED (Current Temperature & Set Temperature) Temperature Sensor: Waterproof NTC 10K Thermistor Temperature Control Range: -50°C to +110°C Temperature Resolution: 0.1°C Temperature Calibration: -10°C to +10°C Relay Output: 10A (Maximum) Relay Contact Rating: Up to 120VAC 10A / 14VDC 10A Control Modes: Heating (H) / Cooling (C) Hysteresis Setting: 0.1°C to 30°C Delay Start: 0–10 Minutes High Temperature Alarm: -49°C to +110°C Memory: Non-Volatile Parameter Storage Controller: Nuvoton MCU Dimensions: Approx. 60 × 44 × 17 mm Weight: Approx. 22 g (may vary slightly by manufacturer) ⚙️ Parameter Functions Parameter Description P0 Heating (H) / Cooling (C) Mode Selection P1 Temperature Hysteresis (Return Difference) P2 Maximum Temperature Limit P3 Minimum Temperature Limit P4 Temperature Calibration P5 Relay Delay Start (0–10 Minutes) P6 High Temperature Alarm Setting 🔧 Applications Suitable for: Egg Incubators Aquarium Temperature Control Greenhouse Automation Refrigeration Systems Cooling Fans Heating Elements Water Heaters HVAC Systems Fermentation Equipment Battery Temperature Monitoring Industrial Automation Laboratory Equipment DIY Electronics Smart Home Projects Arduino & Raspberry Pi Projects (Relay Interface) 📦 Package Includes 1 × XH-W1219 12V Digital Temperature Controller Module 1 × Waterproof NTC 10K Temperature Sensor ⚠️ Note Operates only on 12V DC. The relay output is rated for 10A maximum. For higher-power loads, use an external contactor or relay. Sensor cable can be extended if required using appropriate wiring. Product appearance or PCB color may vary slightly depending on the manufacturing batch.
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
DHT11 Digital Temperature and Humidity Sensor Module 3.3V-5V for Arduino & Raspberry Pi
[Temperature Sensor] The DHT11 Digital Temperature and Humidity Sensor Module is a reliable and cost-effective sensor designed to measure ambient temperature and relative humidity. It combines a capacitive humidity sensing element and a thermistor with a built-in digital signal processing unit, providing calibrated digital output directly to microcontrollers. In addition, the DHT11 offers stable performance and excellent long-term reliability, making it suitable for environmental monitoring and automation applications. As a result, it is widely used in weather stations, smart home systems, greenhouse monitoring, HVAC systems, and educational electronics projects. Because the module includes the required pull-up resistor, interfacing with microcontrollers becomes simple and straightforward. Furthermore, only three connections are required: VCC, GND, and Data Output. The sensor operates from a wide voltage range of 3.3V to 5.5V DC, ensuring compatibility with Arduino, Raspberry Pi, ESP32, STM32, NodeMCU, and other development boards. Moreover, readily available libraries and example codes allow quick integration into projects. The DHT11 utilizes advanced digital signal acquisition technology and dedicated temperature-humidity sensing techniques to ensure accurate and dependable measurements. 🔹 Key Features Measures temperature and humidity simultaneously Calibrated digital signal output Low power consumption High reliability and long-term stability Capacitive humidity sensing technology Built-in pull-up resistor on module Compatible with Arduino, ESP32, Raspberry Pi, and STM32 Simple 3-wire interface Easy integration into IoT projects Compact and lightweight design 🔹 Technical Specifications Sensor Model: DHT11 Operating Voltage: 3.3V – 5.5V DC Output Type: Digital Serial Output Humidity Measurement Range: 20%RH – 90%RH Humidity Accuracy: ±5%RH Humidity Resolution: 1%RH Temperature Measurement Range: 0°C – 50°C Temperature Accuracy: ±2°C Temperature Resolution: 1°C Sampling Rate: 1Hz (One Reading Per Second) Long-Term Stability: < ±1%RH/Year Interchangeability: Fully Interchangeable Sensor Technology: Capacitive Humidity Sensor + Thermistor 🔹 Pin Configuration Pin 1 (VCC): 3.3V – 5.5V DC Power Supply Pin 2 (DATA): Digital Serial Data Output Pin 3 (GND): Ground 🔹 Applications This sensor module is suitable for: Arduino projects Raspberry Pi projects ESP32 projects IoT systems Weather monitoring stations Smart home automation Greenhouse monitoring HVAC control systems Environmental monitoring Educational electronics projects 🔹 Package Includes 1 × DHT11 Digital Temperature and Humidity Sensor Module
Micro USB 5V 1A Step-Up Boost Converter Power Bank Charging Module for 3.7V Lithium Battery
[Li-ion Rechargeable Battery Charger, Lithium Battery Protection Board] The Micro USB 5V 1A Step-Up Boost Converter Power Bank Charging Module is a versatile and reliable solution for building portable power banks and battery-powered electronic projects. Designed for use with a single 3.7V lithium-ion battery, the module integrates battery charging, protection circuitry, and a high-efficiency boost converter on a single compact PCB. In addition, the onboard boost converter efficiently converts the battery voltage to a regulated 5V USB output, making it suitable for charging smartphones, microcontroller projects, portable gadgets, and USB-powered devices. As a result, users can create compact and dependable portable power solutions with minimal external components. Because of its integrated protection functions, the module safeguards the battery against overcharging, over-discharging, and short circuits. Furthermore, LED status indicators provide clear visual feedback regarding charging and operating conditions. The compact design allows easy integration into custom battery packs, DIY power banks, portable electronics, and embedded systems. Moreover, the Micro USB charging interface ensures compatibility with widely available charging cables and adapters. 🔹 Key Features Micro USB charging interface Integrated lithium battery charging circuit Built-in 5V step-up boost converter Stable 5V USB output Supports single-cell 3.7V lithium-ion batteries Overcharge protection Over-discharge protection Short-circuit protection High conversion efficiency LED charging status indicators Compact and lightweight design 🔹 Technical Specifications Product Type: Power Bank Charging Module Charging Interface: Micro USB Input Voltage: 3.7V Lithium Battery Output Voltage: 5V USB Standard Maximum Output Current: 1A Supported Battery Type: Single Cell Lithium-Ion Battery (3.7V) Efficiency: Up to 92% Quiescent Current: Less than 100µA Charging Protection: Overcharge, Over-discharge, Short Circuit Protection Overcharge Protection Voltage: 4.2V Over-discharge Protection Voltage: 2.5V Charging Cut-off Current: 50mA Module Dimensions: Approx. 36mm × 17mm × 7mm PCB Thickness: 1.6mm Operating Temperature: -40°C to +85°C Status Indication: LED Charging Indicators 🔹 Applications This charging module is suitable for: DIY power banks Portable USB chargers Lithium battery projects Arduino power supplies ESP32 and IoT devices Portable electronics Rechargeable battery systems USB-powered gadgets 🔹 Package Includes 1 × Micro USB 5V 1A Step-Up Boost Converter Lithium Battery Charging and Protection Module
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.
HLK-5M05 Hi-Link 5V 5W AC to DC Power Supply Module Isolated SMPS PCB Mount
[AC DC Power Supply Module] The HLK-5M05 Hi-Link 5V 5W AC to DC Power Supply Module is a compact isolated switching power supply designed for converting high-voltage AC input into a stable 5V DC output. It is widely used in embedded systems, automation projects, smart home devices, and industrial electronics. Unlike traditional transformer-based power supplies, this module integrates advanced switching power technology into a compact PCB-mount design. As a result, it offers high efficiency, low heat generation, and reliable long-term performance. In addition, the module supports a wide input voltage range from 90V AC to 264V AC, making it suitable for global power standards. Furthermore, the isolated design improves safety and helps protect connected electronic circuits. The HLK-5M05 includes built-in short-circuit, overload, and overcurrent protection, ensuring safe and stable operation. Moreover, its low ripple and low noise output make it suitable for sensitive electronic devices and microcontroller circuits. Because of its ultra-compact size and PCB mounting capability, the module is easy to integrate into custom electronic products and DIY projects. Therefore, it is commonly used in IoT systems, smart switches, automation controllers, industrial instruments, and communication equipment. 🔹 Key Features Stable 5V DC output 5W isolated switching power supply Wide AC input voltage support Compact PCB mount design Low ripple and low noise output Built-in overload and short-circuit protection High efficiency and reliability UL and CE compliant design Low no-load power consumption Suitable for industrial and DIY applications 🔹 Technical Specifications Model: HLK-5M05 Product Type: AC to DC Switching Power Supply Module Input Voltage: 90V – 264V AC Rated Input Voltage: 100V – 240V AC Output Voltage: 5V DC Output Power: 5W Maximum Output Current: 1000mA Short-Term Peak Current: ≥1200mA Input Frequency: 50/60Hz Maximum Input Current: ≤0.2A Efficiency at 220V AC: ≥70% Efficiency at 110V AC: ≥69% Ripple & Noise: ≤70mVp-p Voltage Regulation: ±0.2% Load Regulation: ±0.5% Isolation Type: High Isolation Cooling Method: Natural Air Cooling Working Temperature: -20°C to +60°C Storage Temperature: -40°C to +80°C Relative Humidity: 5% – 95% RH Mounting Type: PCB Mount Safety Protection: Overload & Short-Circuit Protection 🔹 Applications This AC to DC module is suitable for many electronic and industrial applications, including: Smart home systems IoT devices Automation controllers Industrial control systems Communication equipment DIY electronics projects Embedded systems Power supply circuits 🔹 Package Includes 1 × HLK-5M05 Hi-Link 5V 5W AC to DC Power Supply Module
Type-C USB 5V 2A Step-Up Boost Converter with USB Charger
[Li-ion Rechargeable Battery Charger, Step UP Buck Converter] Build your own portable power solutions with the Type-C USB 5V 2A Step-Up Boost Converter Power Bank Module — a compact and efficient charging solution designed for DIY power banks and USB-powered devices. This versatile module supports battery charging and 5V boost output, allowing you to convert battery voltage into a stable 5V USB output for powering smartphones, microcontrollers, and other USB devices. Equipped with a Type-C input, high-efficiency boost circuit, and intelligent power management, this module ensures reliable performance, fast charging, and safe operation. It also supports simultaneous charging and discharging, making it perfect for uninterrupted power supply applications. Key Features 🔋 2-in-1 Charging + Boost ModuleCharge your lithium battery while simultaneously providing a stable 5V output. ⚡ Stable 5V 2A OutputDelivers consistent power for USB devices like smartphones, Arduino, ESP32, and more. 🔌 Type-C USB InputModern and widely compatible input for easy charging (5V–5.5V). 🔄 High Efficiency Boost Conversion (Up to 92.5%)Minimizes power loss and improves battery life. 🧠 Smart Power ManagementAutomatically controls charging cycles, output switching, and battery protection. 🔘 External Button Control Support Short press: Turn ON output & display Double press: Turn OFF output 🔧 DIY Friendly DesignIncludes USB-A solder pads for custom builds and integrations. Working Functions 🔹 Auto shutdown when load current < 50mA🔹 Auto stop charging when current drops to 100mA🔹 Auto recharge when battery voltage < 4.1V🔹 Pre-charge mode below 2.8V (180mA safe charging)🔹 Supports charging while discharging Specifications Specification Description Input Voltage 5V – 5.5V (Type-C USB) Charging Cut-off Voltage 4.2V / 4.35V ±0.5% Charging Current 2.4A ±5% Boost Output Voltage 5V – 5.15V Output Current Up to 2A Efficiency Up to 92.5% Output Ripple 100mV Quiescent Current 30µA Material Metal + Plastic Applications 🔋 DIY Power Banks📱 Mobile Charging Projects🔧 Arduino / ESP32 Power Supply🔌 USB Device Power Modules🚗 Portable Electronics🧪 Embedded Systems & Prototyping Package Includes 1 × Type-C USB 5V 2A Step-Up Boost Converter Power Bank Module
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)
Battery Voltage Wire 7/36 Black & Red 1 Meter – Flexible Copper Hook-Up Wire (Pair)
[Hook up wire] The Battery Voltage Wire 7/36 Black & Red is a high-quality flexible hook-up wire specially designed for battery connections, low-voltage power lines, and electronic circuits. Made with 7 strands of 36-gauge copper, this wire provides excellent conductivity, durability, and flexibility for easy routing in compact spaces. The wire comes in red and black insulation, making it perfect for identifying positive and negative terminals in battery packs, power supplies, inverters, chargers, and DIY electronics projects. With strong PVC insulation and fine stranded copper core, this wire is suitable for low-current DC applications, hobby electronics, Arduino projects, robotics, and general internal wiring. 🔹 Key Features High-quality 7/36 stranded copper conductor Red & Black color for easy polarity identification Highly flexible and easy to bend and route Low resistance for stable voltage transmission Durable PVC insulation for long life Ideal for low-voltage and low-current applications Suitable for DIY electronics, battery packs, and repair work 🔹 Technical Specifications Wire Type: Hook-up / Battery Voltage Wire Conductor Size: 7 / 36 (7 strands of 36 AWG) Material: Pure copper stranded core Insulation: PVC Color: Red & Black Rated Voltage: Up to 300V (typical) Current Rating: Low current applications Flexibility: High Application Type: DC wiring, battery leads, signal & power lines 🔹 Applications Battery pack connections Arduino and microcontroller projects Power supply wiring Robotics and automation Inverter and charger wiring (low current) DIY electronics and prototyping Repair and internal equipment wiring 🔹 Package Contents 1 × Red 7/36 Battery Wire 1 × Black 7/36 Battery Wire
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)
500mAh 3.7V Single Cell Rechargeable LiPo Battery (HCY-602530)
[LiPo Cell] 500mAh Rechargeable 3.7v LiPo Battery The 600mAh Rechargeable 3.7V LiPo Battery is a compact and high-performance power source designed for a wide range of DIY electronics, robotics, and wearable projects. With a nominal voltage of 3.7V and capacity of 500mAh, this 1S lithium polymer battery delivers a reliable and consistent power output for your low-to-medium power applications. Its lightweight and slim profile make it ideal for portable gadgets, RC toys, sensors, and IoT devices that require stable energy without adding bulk. One of the key advantages of this battery is its long-lasting runtime when used with efficient electronics. For example, if a device consumes an average current of just 2mA, the 600mAh capacity allows the battery to run for up to 300 hours (600mAh / 2mA) under ideal conditions. This impressive endurance highlights the battery’s suitability for long-duration tasks, especially in energy-conscious designs. With Witty Fox’s reputation for quality and durability, this LiPo battery is a dependable choice for both hobbyists and professionals looking for efficient power solutions. Features: High Capacity: 600mAh gives little devices a longer runtime. Consistent Performance: A nominal voltage of 3.7V guarantees stable output. It is rechargeable, so it can be used repeatedly for extended periods of time. Small Design: Elongated and light, ideal for projects with limited area Up to 300 hours of use at a current draw of 2mA is supported by smart power efficiency. Multiple embedded systems, microcontroller boards, and robotics kits can all be used with this versatile tool. Specifications: Specification Details Brand HCY Battery Type Lithium Polymer (LiPo) Nominal Voltage 3.7V Nominal Capacity 500mAh Battery Cell Configuration 1S (Single Cell) Rechargeable Yes Dimensions (LxWxH) 30 x 25 x 6 mm Weight 8 g(approx) Package Includes: 3.7V 500mAH (Lithium Polymer) Lipo Rechargeable Battery (Model – 602530)
Type-C MT3608 Adjustable Dc to Dc Converter 2-24V to 5V-28V 2A
[Step UP Buck Converter] DC-DC Adjustable Boost Power Supply Module 2V–24V to 5V/9V/12V/28V 2A Type-C The DC-DC Adjustable Boost Power Supply Module is a compact step-up power conversion module designed to increase a lower DC input voltage to a higher adjustable output voltage. It supports a wide 2V–24V input range and provides an adjustable output from approximately 5V to 28V, making it suitable for battery-powered devices, microcontrollers, sensors, portable electronics and DIY power projects. With a compact 30 × 17 × 8mm design and Type-C connector, this module is convenient for projects where space and flexible power input are important. ⭐ Key Features DC-DC boost/step-up converter Wide 2V–24V input voltage range Adjustable output voltage Output options include approximately 5V, 9V, 12V and 28V Maximum output current: 2A Conversion efficiency: >93% Compact and lightweight design Type-C input connector Suitable for battery-powered applications Easy to integrate into DIY electronics projects 📋 Technical Specifications Product Type: DC-DC Boost Converter Module Input Voltage: 2V–24V DC Output Voltage: 5V–28V adjustable Maximum Output Current: 2A Peak Output Current: Up to 2A Efficiency: >93% Input Connector: USB Type-C Product Size: 30 × 17 × 8mm Weight: Approximately 4g Condition: New 🔧 Applications Arduino and microcontroller projects Raspberry Pi and electronic development projects Battery-powered devices Portable power systems GPS and sensor projects LED applications Robotics projects Motors and actuators DIY power supplies Low-voltage to higher-voltage power conversion Portable electronic equipment 🛠️ How It Works This module uses a DC-DC boost conversion circuit to increase the input DC voltage. For example: 3.7V battery → 5V output 5V input → 9V output 5V/12V input → higher adjustable output The required output voltage can be adjusted according to the application. ⚠️ Important Notes This is a boost/step-up module; the output voltage cannot be lower than the applicable input voltage range. Do not exceed the specified 24V maximum input voltage. Do not exceed the 2A maximum output current. Actual maximum output power depends on input voltage, output voltage, cooling and module operating conditions. At higher output power, adequate ventilation/cooling may be required. Always verify the output voltage with a multimeter before connecting sensitive electronics. Do not short-circuit the output. The module does not automatically regulate to 5V/9V/12V/28V; the output must be set to the required voltage. 📦 Package Includes 1 × DC-DC Adjustable Boost Module 2V–24V to 5V/9V/12V/28V, 2A, Type-C
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
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
315MHz 4 Channel Wireless RF Remote Control Kit with Receiver Module (Non-Locking Mode)
[RF Module] 📡 315MHz 4 Channel Wireless RF Remote Control Kit with Receiver Module (Non-Locking Mode) 4 Channel RF Remote • 315MHz ASK Communication • 5V Receiver • Non-Locking Mode • Long Range Wireless Control The 315MHz 4 Channel Wireless RF Remote Control Kit is a reliable wireless control solution consisting of a 4-button RF transmitter and a super regenerative ASK receiver module. Operating at 315MHz, this kit is ideal for remote switching, automation, robotics, security systems, and DIY wireless control projects. The receiver module features four independent digital outputs (D0–D3) that correspond to the four buttons on the transmitter. When a button is pressed, the respective output pin goes HIGH, returning LOW immediately after the button is released. This Non-Locking (Momentary/Jog) operation makes the module perfect for applications requiring temporary switching such as electric door control, motor jogging, relay activation, and microcontroller interfacing. The receiver operates from a 5V DC supply and features a high-sensitivity ASK receiver with a Valid Transmission (VT) output pin for reliable signal detection. The transmitter uses a fixed-code encoder for secure communication and easy operation. Ideal for Arduino, ESP32, Raspberry Pi, AVR, PIC, industrial automation, wireless switching, and educational electronics projects. ⭐ Features 4-channel wireless RF remote control kit Operating frequency: 315MHz ASK (Amplitude Shift Keying) modulation Fixed-code RF transmitter Non-Locking (Momentary/Jog) operating mode Four independent digital outputs (D0–D3) High-sensitivity super regenerative receiver 5V DC receiver operating voltage VT (Valid Transmission) status output Compact PCB design Easy interface with microcontrollers Long wireless transmission range (environment dependent) Suitable for DIY and industrial automation 📋 Technical Specifications RF Transmitter Product Type: RF Wireless Remote Control Operating Frequency: 315MHz Number of Buttons: 4 Channels: 4 Modulation: ASK (Amplitude Shift Keying) Encoding Type: Fixed Code Operating Mode: Non-Locking (Momentary) Power Supply: 12V A23 Battery (Not Included) RF Receiver Module Operating Voltage: 5V DC Operating Frequency: 315MHz Receiver Type: Super Regenerative ASK Receiver Receiver Sensitivity: -98dBm Output Channels: D0, D1, D2, D3 VT Output: Yes (Valid Signal Output) Antenna Connection: External ANT Pin Recommended Antenna Length: Approx. 17cm (Quarter-Wave) Module Dimensions: Approx. 41 × 22 × 7 mm Receiver Pin Configuration VT – Valid Signal Output D3 – Channel 4 Output D2 – Channel 3 Output D1 – Channel 2 Output D0 – Channel 1 Output +5V – Power Input GND – Ground ANT – External Antenna Connection 🔧 Operating Modes Non-Locking (Momentary/Jog Mode) Press a button → Corresponding output goes HIGH. Release the button → Output immediately returns LOW. Ideal for momentary control applications. Note: This product is supplied in Non-Locking Mode only. 🔧 Applications Suitable for: Arduino Projects ESP32 Projects Raspberry Pi Projects Wireless Relay Control Home Automation Industrial Automation Remote Door Control Electric Door Locks Wireless Switching Robotics Motor Control Lighting Control Alarm Systems Security Systems DIY Electronics Educational Projects 📦 Package Includes 1 × 4-Button 315MHz RF Wireless Remote Control 1 × 315MHz Super Regenerative Receiver Module ⚠️ Note Battery is included. A 12V A23 battery is required for operation. Avoid bending or touching the receiver's onboard inductor (copper coil), as this may affect receiver sensitivity. Wireless operating range depends on antenna quality, obstacles, and surrounding RF interference. Product appearance may vary slightly depending on the manufacturing batch.
PICKIT3.5 Plus Microchip Programmer W/USB Cable Wires Pic Kit 3.5+
Description: PICKIT3.5 Plus In-Circuit Debugger/Programmer compatible with Microchip uses in-circuit debugging logic incorporated into each chip with Flash memory to provide a low-cost hardware debugger and programmer. The PICKIT3.5 Plus allows debugging and programming of PIC and dsPIC Flash microcontrollers using the powerful graphical user interface of the MPLAB Integrated Development Environment (IDE). PICKIT3.5 Plus is an upgrade from the Pickit 3 programmer with the programming-to-go feature. Specifications: Type: Debugger/Programmer Tool/Board Application: Debugging/Programming MCU Supported Families: Flash-based PIC MCUs Core Architecture: PIC, dsPIC IC Product Type: In-Circuit Debugger Features USB (Full speed 12 Mbits/s interface to host PC) Real-time execution MPLAB IDE compatible (free download from Microchip) Built-in over-voltage/short circuit monitor Firmware upgradeable from PC/web download Diagnostic LEDs (power, busy, error) Read/write program and data memory of the microcontroller Erase of program memory space with verification Freeze-peripherals at breakpoint Program up to 512K byte flash with the Programmer-to-Go ICSP cable included Package Included: 1 x PICKIT3.5 Plus Microchip Programmer W/USB Cable Wires Pic Kit 3.5+
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