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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Only 2 leftMQ-7 CO Sensor
MQ-7 high sensitivity CO carbon monoxide sensor detector.
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
Out of stockNE 555 P PDIP-8 Timer IC
[Timer,Clock,Counter ICs] The NE 555 P timer IC is a precision timing circuit capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the as table mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by the use of the control voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. Features: Timing from microseconds to hours A stable or monostable operation Adjustable duty cycle TTL compatible output can sink or source up to 200mA Applications: Clock & Timing, Consumer Electronics, Aerospace, Defence, Military, Embedded Design & Development Package Includes: 1 x NE 555 P PDIP-8 Timer IC
Out of stockMini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560
[Brushed DC motor Driver] Mini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560 is a Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC and stepping motors) and switching power transistors. To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz. Features: Enable facility. Overtemperature protection. Logical “0” input voltage up to 1.5V(High noise immunity). Internal clamp diodes. Package Includes: 1 x Mini Motor Drive Shield Expansion Board L293D Module.
TPA3118 PBTL Mono Digital Amplifier Board 1X30W 12V 24V Power Amplifier Module
[Amplifier Board] If you want to make a device where you can control the volume of any sound system then this board is essential for you. In this module, you will get a specification of 30 w and this board can operate in both 12 v or 24 v. This power amplifier board is gaining so much popularity because of good sound quality and you can make simple but best projects and Students are like these types of the board because of its effective cost. It has high output and low power consumption. Pin Diagram: Features: Sound quality is very good by using this module. Mono digital audio power amplifier chip. High output and low power consumption. Package Includes : 1 x TPA3118 PBTL Mono Digital Amplifier Board 1X30W 12V 24V Power Amplifier Module.
Out of stockTPA3110 Mono Channel Digital Amplifier Board 30W Power Amplifier Module
[Amplifier Board] TPA3110 Mono Channel Digital Amplifier Board 30W Power Amplifier Module is useful in applications like DIY Bluetooth speaker, home and car audio system modification. Specifications and Features : Amplifier Chip: TPA3110. Working Voltage: DC 8-26V. Output Power: 1 x 30W. Applicable Speaker Impedance: 4/6/8 ohm(8 ohms Best). PCB Board Size: 44 x 30 x 10 (LxWxH)mm / 1.65 x 1.18in. Weight: 10 gm / 0.35oz. DC 8-26V TPA3110 PBTL Mono Digital Amplifier Board AMP Module 1x30W for Arduino. Single-channel digital power amplifier Board PBTL. Mono digital audio power amplifier chip. 30W output and low power consumption. Sound quality is very good by using this module. Applicable speaker impedance: 4/6/8 ohm(8 ohm is the best). Application: DIY Bluetooth speaker, home and car audio system modification. Package Includes : 1 x TPA3110 Mono Channel Digital Amplifier Board 30W Power Amplifier Module.
0.96 Inch I2C/IIC 128×64 OLED Display Module Blue (4 Pin)
[LED/LCD Display Module] The 0.96 Inch I2C/IIC OLED Display Module (128×64) is a compact and efficient display designed for microcontroller and embedded system applications. Based on OLED (Organic Light-Emitting Diode) technology, the display provides bright blue pixels with excellent contrast and wide viewing angles. Unlike traditional LCD displays, OLED displays are self-emitting, meaning they do not require a backlight. This results in lower power consumption, higher brightness, and better contrast, making OLED displays ideal for portable electronics and embedded systems. The module uses the popular SSD1306 driver controller, allowing easy integration with development platforms such as Arduino, ESP8266, ESP32, Raspberry Pi, STM32 and other microcontrollers. With its I2C/IIC communication interface, the display requires only 4 pins (VCC, GND, SCL, SDA), saving valuable GPIO pins on your microcontroller. It supports widely available libraries such as Adafruit SSD1306 and U8g2, making it simple to display text, graphics, icons, and sensor data. Thanks to its high brightness, ultra-thin design, wide operating temperature range, and low power consumption, the 0.96″ OLED display module is widely used in IoT devices, robotics, wearable electronics, sensor monitoring systems, and DIY electronics projects. ⭐ Key Features 0.96 inch OLED display module 128 × 64 pixel resolution Blue monochrome display SSD1306 display controller I2C / IIC communication interface Requires only 4 connection pins High brightness and high contrast Wide viewing angle Low power consumption Compatible with Arduino, ESP32, NodeMCU, Raspberry Pi 🔧 Technical Specifications Display Size: 0.96 inch Resolution: 128 × 64 pixels Display Type: OLED (Organic Light Emitting Diode) Display Color: Blue Controller Chip: SSD1306 Interface Type: I2C / IIC Working Voltage: 3.3V – 5V Communication Pins: VCC, GND, SCL, SDA Driver Support: Arduino / Raspberry Pi libraries 📌 Interface Pin Configuration Pin Function VCC 3.3V – 5V Power Supply GND Ground SCL Serial Clock SDA Serial Data 🎯 Applications Arduino projects ESP32 / ESP8266 IoT devices Sensor data display Robotics systems Battery monitors Weather stations DIY electronics projects 📦 Package Includes 1 × 0.96 Inch I2C/IIC 128×64 OLED Display Module Blue (4 Pin)