• Original chip for reliable Bluetooth communication.
• Compatible with Arduino and other microcontrollers.
• Easy to interface with laptops and mobile phones with Bluetooth.
• Supports multiple communication speeds (baud rates).

• 2-digit 7-segment LED display with red illumination for clear visibility
• Common Anode (C.A.) configuration for ease of integration into electronic circuits
• Brightness of 1.0 mcd @ 10mA, offering good visibility even in low-light environments
• Right-hand side decimal point location, ideal for numerical displays and counters

• Compact and Lightweight ideal for small projects
• 5V DC Working Voltage easy to power with standard supply
• Short Detection Range suitable for detecting small metallic objects
• Simple to Use with clear instructions for connection

• High-frequency clock signal generator with square wave output.
• Compatible with Arduino SCM & DIY kits.
• Wide logic voltage range of 3.3V to 5V.
• Designed with high-quality PCB material for durability.

• Contactless Data Transmission: No battery required, energy is supplied by the reader.
• Anti-collision Technology: Multiple cards can be read at the same time without interference.
• Printable Surface: Can be customized for branding or identification purposes.

The Mini 5A PWM DC Motor Speed Controller is an essential module for precise speed control of DC motors and LED dimming. With an operating voltage range of 3V to 35V and a maximum power control of 90W, this compact controller ensures efficient performance in a variety of applications.

• Operating Voltage: DC3V-35V
• Control Power: 90W (maximum)
• Quiescent Current: 0.015A (standby)
• PWM Duty Cycle: 1% -100%
• PWM Frequency: 10kHz
• Size: 24 x 30mm (0.94 x 1.18 inches)

• Supports up to 80 voice commands, each up to 1500ms long.
• Can recognize a maximum of 7 voice commands simultaneously.
• High accuracy (99%) in ideal conditions.
• Easy to control via UART or GPIO.

• High-Sensitivity GPS: Utilizes the imported NEO-M8N GPS module with high signal strength.
• Ceramic Active Antenna: Offers excellent amplification and filtering for strong signal reception.
• Data Backup: Includes a backup battery and EEPROM to save configuration parameters.
• LED Indicator: Equipped with LED lights for easy status indication.

• Dual-Port Independent Output for simultaneous charging
• Supports Multiple Fast Charging Protocols:
  • QC2.0, QC3.0, MTK PE1.1/2.0, Apple, Samsung AFC, Huawei FCP, Spreadtrum SFCP
• Wide Input Voltage Range: DC 6V - 30V

• Supports MP3, WAV, and WMA formats
• TF card (up to 32GB) and U Disk support
• 30 volume levels and 6 EQ levels adjustable
• Multiple control modes (IO, serial, AD button)

• High-accuracy temperature measurement from -200°C to 1350°C.
• Compact and durable design for various applications.
• Compatible with K-type thermocouples.
• SPI communication interface for easy integration.

• High-precision laser range measurement
• Small size and easy to integrate
• Operates with IIC communication protocol
• Low power consumption, 2.8V to 5V power supply

The MQ-5 Gas Sensor Module is designed to detect natural gas and methane with high accuracy. Operating at 5V, this sensor provides both TTL digital and analog outputs, with a detection concentration range of 300-10000ppm. Ideal for environmental monitoring and safety systems.

Key Features:

• Gas Detection: Natural gas/Methane
• Detection Concentration: 300-10000ppm
• Input Voltage: DC 5V
• Power Consumption: 150mA
• Digital Output (DO): TTL 0 and 1 (0.1 and 5V)
• Analog Output (AO): 0.1-0.3V, max 4V at high concentration
• Chip Used: AT89S52
• Crystal: 11.0592MHZ
• Baud Rate: 9600

• Compatible with multiple Arduino boards, including Uno R3, Mega2560, Nano, and Pro Mini (5V 16M)
• Built-in buzzer for audible feedback on bootloader burning status
• On-board LED indicators for programming status and error detection
• Supports ISP_6PIN and ISP_10PIN interfaces for flexible bootloader burning

• Open-Type Vibration Sensor for precise motion detection
• Comparator Output (0 and 1) for easy digital signal processing
• Wide Voltage Range (3V - 5V) supports various microcontrollers
• Strong Driving Ability of over 15mA output current

• Waterproof and durable for outdoor use
• Operates at a DC 5V voltage with low power consumption
• Capable of measuring distances from 25cm to 4.5m
• Acoustic emission frequency of 40kHz for accurate distance detection