The TEC1-12706 is a thermoelectric cooler (Peltier) module designed for efficient cooling and heating applications. It features a compact size of 40x40mm, operates with a maximum current of 7A and a maximum voltage of 15.4V, and can achieve a maximum temperature difference of 69°C. This module is ideal for various thermal management applications.

The MQ-4 Gas Sensor Module is designed to detect natural gas and methane, operating at a voltage of 5V. This module is ideal for environmental monitoring and safety systems. Key features include:

• Sensor Type: Semiconductor
• Operating Voltage: VCC - 5V±0.1
• Digital Output (DO): TTL 0 and 1 (0.1 and 5V)
• Analog Output (AO): 0.1-0.3V (relative to pollution), max 4V at high concentration
• Gas Detection: Natural gas/Methane
• Detection Concentration: 200-10000ppm
• Interfaces: 1 TTL input (HSW), 1 TTL output (ALR)
• Heater Consumption: <750mw
• Operating Temperature: 14 to 122°F (-10 to 50°C)
• Humidity: <95% RH
• Sensing Resistance: 10KΩ-60KΩ (1000ppm CH4)
• Load Resistance: 20KΩ
• Preheat Time: Over 24 hours
• Encapsulation: Bakelite, Metal cap

Key Features:

• New water pump from excess inventory equipment.
• Originally made for Keurig coffee brewing machines.
• Operates on 12 VDC nominal, with a current of 720 mA.
• Primary inlet diameter: 9/16".
• Secondary inlet diameter: 1/8".
• Outlet diameter: 3/16".
• To obtain maximum flow, both inlets should be submerged.
• 4 blade impeller with magnetic coupling to prevent water ingress.
• Dimensions: 3 3/8" long x 2 1/8" wide x 1 5/8" tall.
• Motor diameter: 1 1/16".
• Comes with a built-in mounting bracket.
• Weight: 3.6 oz (101 g).

The 8x8 LED Matrix Module (60x60mm) QFT2388ASR is ideal for building custom LED displays that can be interfaced with an Arduino microcontroller. This module includes 64 LEDs, capacitors, resistors, and a MAX7219CNG serially interfaced 8-digit LED display driver, making it perfect for DIY projects.

Key Features:

• LEDs: 64 x 5mm White LEDs
• Capacitors: 1 x 10uF electrolytic, 1 x 0.1uF ceramic
• Resistors: 1 x 10k ohm resistor
• Driver IC: MAX7219CNG Serially Interfaced 8-Digit LED Display Driver
• Power Supply: Compatible with Arduino
• Dimensions: 60x60mm

The PIC18F4550 is an ideal microcontroller for low power (nanoWatt) and connectivity applications. It features three serial ports: FS-USB (12Mbit/s), I²C™, and SPI™ (up to 10 Mbit/s), along with an asynchronous (LIN capable) serial port (EUSART). With large amounts of RAM for buffering and enhanced Flash program memory, this microcontroller is perfect for embedded control and monitoring applications that require periodic connection with a personal computer via USB for data upload/download and firmware updates.

The Digital Caliper High Quality is a precision measuring tool designed for accurate measurements. With its 150mm range, it offers dual reading in both metric and imperial units. The extra-large display screen and four measurement functions ensure ease of use and versatility, while the fine adjustment roller provides precision. Complete with a storage case and battery, it's the perfect tool for various measuring tasks.

Key Features:

• Metric or imperial dual reading
• Extra-large display screen
• Four measurement functions
• Fine adjustment roller
• Complete with storage case and battery

The 4-ARRAY Infrared Tracking Obstacle Avoidance Car Sensor is designed for Arduino projects, offering reliable tracking and obstacle avoidance capabilities. This sensor operates at 3.3V to 5V DC, providing adjustable detection distances between 1 mm to 60 cm. Ideal for robotics and smart car applications.

Key Features:

• Working Voltage: 3.3V to 5V DC

• Current Requirement: Use more than 1A power supply

• Working Temperature: -10°C to +50°C

• Detection Distance: 1 mm to 60 cm adjustable

• Installation: M3 screw aperture

• Control Plate Size: 44 mm x 30 mm x 8.5 mm

• Small Board Sensor (Obstacle Avoidance): 11 mm x 25 mm x 10 mm

• Small Plate Sensor (Tracking): 20 mm x 11 mm x 15 mm

Discover the 3x4 Matrix Key Pad, a robust and reliable membrane keypad featuring 12 keys in a 3x4 layout. Perfect for microcontroller projects in Bangladesh, it operates within a voltage range of 3V to 5V DC and comes with Dupont 7 pins for effortless connection. This keypad is ideal for various electronic applications, designed to withstand everyday use.

The ATmega328P chip with bootloader is a versatile and powerful microcontroller, widely used in various electronics projects. It is based on the AVR enhanced RISC architecture, providing efficient instruction execution and high performance. This microcontroller is pre-loaded with a bootloader, making it easy to program and integrate into your projects.

The Atmel ATtiny13A-PU is a picoPower 8-bit AVR RISC-based microcontroller designed for high performance and low power consumption. This microcontroller is ideal for a variety of applications, offering a compact and efficient solution with its powerful instruction set and versatile features.

Key Features:

• Operating voltage: 12V DC
• Durable and efficient design
• Suitable for various applications including aquariums, water features, and solar water systems
• Compact and easy to install

• Overvoltage and Overcurrent Protection: Ensures safe operation under high power and current.
• DC Power Supply: Operates on 20-50V DC (36V recommended).
• High Drive Current: Supports a maximum current of 4.2A.
• Standby Current Reduction: Option to set standby current to half for efficiency.

Discover the Arduino Nano ATmega328p, a powerful microcontroller board designed for a variety of electronic projects in Bangladesh. Featuring the Atmel ATmega328 microcontroller, it operates at 5V with a recommended input voltage of 7-12V. With 14 digital I/O pins and 8 analog input pins, it offers versatile connectivity and performance for your DIY electronics.

The 5 Watt 2.2 Ohm Ceramic Cement High Power Resistor is a robust and reliable component for various electronic applications. With a 5% tolerance and easy mounting, this resistor ensures precise performance and long life. RoHS compliant.

Key Features:

• Standard Type with Excellent Ratings
• Long Life
• Easy Mounting
• RoHS Compliant
• Color: White
• Resistor Size: 22x9x5mm
• Lead Diameter: 0.7mm
• Resistance Value: 2.2Ω
• Power Rating: 5W
• Material: Organic solid (Cement)
• Resistance Tolerance: ± 5%

The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller from Atmel, featuring 8K bytes of in-system programmable Flash memory. This microcontroller is designed for a wide range of applications, offering robust performance and flexibility. It includes several standard features that make it suitable for embedded control applications.

The PIC16F628 is a powerful and easy-to-program CMOS Flash-based 8-bit microcontroller from Microchip. It features the robust PIC® architecture, making it suitable for a wide range of applications, including automotive, industrial, appliances, and consumer electronics. This microcontroller is designed for low voltage programming and offers a variety of features that enhance its versatility and performance.