• Integrated Cold Junction Compensation: Ensures accurate temperature measurement with built-in cold junction compensation.
• High-Resolution Output: Provides 12-bit resolution, allowing temperature readings from 0°C to 1024°C with a 0.25°C resolution.
• Thermocouple Break Detection: The module includes a circuit to detect thermocouple breaks, ensuring reliable operation.
• K-Type Thermocouple: Compatible with a K-type thermocouple, ideal for high-temperature measurements.

• High-precision magnetic field sensing
• Atmospheric pressure measurement with BMP180 sensor
• Wide pressure range: 300-1100hPa
• Standard IIC communication protocol for easy integration

• Non-contact temperature measurement
• Wide target temperature range: -40°C ~ 115°C
• High resolution of 0.02°C
• Low power consumption with 3V to 5V operating voltage

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

Digital Buzzer Module with 3.1KHz Single Tone

Enhance your electronic projects with this Digital Buzzer Module, featuring a single 3.1KHz tone and a sound level of 80db. Ideal for various applications, it operates at 3.3-5VDC and includes a 3-pin interface for easy integration.

• Power: 3.3-5VDC
• Frequency: Single 3.1KHz tone
• Sound Level: 80db
• 3 Pin Interface and Power
• SPI single line data line, TTL compatible
• Set includes Board and 6in. Interconnect jumpers

Package Includes: 1x Digital Buzzer Module

• Wide Input Voltage Range: 4.2V to 40V.
• Adjustable Output Voltage: Ranges from 1.2V to 37V.
• High Output Current: Minimum 1.5A, typical 2.2A.
• Wide Operating Temperature: Ranges from -55°C to +150°C.

• 16-button keypad for microcontroller expansion
• 4x4 matrix layout for easy interfacing
• Durable PCB design for long-term use
• Compatible with Arduino and other MCUs

• Dual H-Bridge Motor Driver: Capable of driving two DC motors or a 4-wire two-phase stepper motor.
• Built-in TSD: Protects the motor from stalling, ensuring smooth operation.
• Ultra-Small Size: Ideal for assembly and use in compact projects like smart cars or robots.

• Compact round-shaped RGB LED panel board.
• Equipped with 7 WS2812 5050 LEDs for vibrant, individually addressable colors.
• Operates at 5V, ideal for Arduino, Raspberry Pi, and other microcontroller projects.
• Easy to integrate into DIY lighting and decorative applications.

Introducing the PAM8403 Super Mini Digital Amplifier Board, a compact and efficient solution for audio enhancement. This Class D digital amplifier offers 2 x 3W output power with a voltage range of 2.5V to 5V, making it perfect for various digital products. Its small size and high-quality sound reproduction make it an excellent choice for DIY projects and professional applications.

Key Features:

• Output Power: 2 x 3W
• Class D Digital Amplifier
• Voltage Range: 2.5V to 5V
• Compact Size: 1.85 x 2.15cm
• High Sound Quality
• Low THD and Noise
• Short Circuit Protection
• Thermal Shutdown

• Wide Temperature Range: Operates between -30°C to +80°C
• Low Power Consumption: Standby Current < 3mA
• Four GSM/GPRS Bands: Supports 850, 900, 1800, 1900 MHz
• Voice Communication Support: Enables voice calling and communication

Specifications:

• Channels: 3
• Frequency Range: Typically from 1 Hz to several kHz (check the specific module for exact range)
• Duty Cycle Range: 0% to 100%
• Output Type: Square and rectangular wave signals
• Power Supply: Usually 5V or 12V (verify the exact voltage required for your module)
• Control Interface: Typically includes knobs or digital inputs for adjusting frequency and duty cycle
• Output Voltage: Generally the same as the power supply voltage

Package:

1x Modue

• PWM Control: Uses Pulse Width Modulation (PWM) to control the speed of a DC motor, offering smooth and precise speed adjustments.
• LED Display: Features a large 0.56 inch, 3-number LED display that shows the speed percentage from 0% to 100%, making it easy to monitor the motor speed under various conditions.
• Adjustable Speed Range: Speed can be adjusted from 0% to 100%, suitable for DC motors or DC loads with a current draw of less than 5A.
• Push Button: Incorporates a push button that can switch the controller between on and off states.

• High-Gain 2.8dBi FPV Antenna for reliable signal transmission
• RHCP Polarization ensures better multipath interference rejection
• Omnidirectional Radiation Pattern for 360° signal coverage
• Low-Loss & High-Performance Design for FPV applications

• 16 characters by 2 lines black-on-green display.
• Uses the widely known HD44780 parallel interface chipset.
• Freely available interface code for easy integration.
• Blue backlight with white text for better visibility.

Specifications:

• Fixed Output Voltage: 3.3V ± 4%
• Input Voltage Range: 1.8V - 5V
• Continuous Output Current: Max 100mA
• Peak Output Current: Max 150mA (short duration)
• Operating Frequency: 1.2MHz
• Protection: Short-Circuit Protection
• No Load Input Current: 0.65mA
• Pin Pitch: 2.54mm (suitable for Breadboard and MCU Development Boards)
• Dimensions: 11mm x 7.62mm x 4.5mm (excluding pins)
• Weight: Approximately 0.5g

Package:

1x mini 2 in 1 DC DC Step-Down & Step-Up Converter 1.8V-5V to 3.3V Power Wifi ESP8266 HC-05 CE1101 LED Module