Improve your Arduino projects with our LM393 Speed Measuring Sensor Module. This module features a groove motor counter and RPM sensor for accurate rotational speed measurements.

• Operating voltage: 3.3V-5V
• Output: digital switch output (0 and 1)
• Good signal and waveform with strong driving ability (15mA+)
• Equipped with a fixed bolt hole for easy installation
• PCB size: 3.2 cm x 1.4 cm
• Uses LM393 wide voltage comparator
• Package includes: 1x Speed Measuring Sensor Module

The High Sensitivity 5-Array Channel Tracking Sensor Module is integrated with five high sensitivity tracking sensors, offering accurate tracking of complex black or white lines. This sensor module also features an integrated infrared barrier sensor with an adjustable escape distance through a slide rheostat, a specially designed touch detection sensor, and digital output signals (V) for convenient MCU connectivity.

Key Features:

• Integrated with five high sensitivity tracking sensors
• Accurate tracking of black and white lines
• Infrared barrier sensor with adjustable escape distance
• Special touch detection sensor
• Digital signal output for easy MCU connectivity
• LED indicators for sensor output states
• Supports 3.0-5.5V voltage range
• High sensitivity with a tracking range of 0.5mm to 40mm

• 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 Design: Ideal for DIY projects and educational purposes
• 3 LED Colors: Red, Yellow, and Green for traffic signal simulation
• Wide Compatibility: Works with both 3.3V and 5V power supply
• Independent Control: Each LED can be controlled separately

• 802.11 b/g/n Wi-Fi protocol
• 2.4 GHz frequency, supports WPA/WPA2 encryption
• Ultra-compact size: 11.5mm x 11.5mm
• Integrated 10-bit ADC and TCP/IP protocol stack

• Supports single (4.2V) and double (8.4V) lithium rechargeable batteries
• Adjustable charge current: 0.1A to 2A
• Multiple safety protections: Overcurrent, undervoltage, overtemperature, and reverse battery shutdown
• Charge status indicator: Red and green LED lights

• Wide Supply Voltage Range: 1.8V to 3.6V
• Low Power Consumption: 0.5µA at 1Hz
• I2C Interface for easy integration
• Max I2C Speed: 3.5MHz

• Brand new and high quality.
• L293D is a monolithic integrated, high voltage, high current, 4-channel driver.
• Can drive DC motors and power supplies of up to 36V with a maximum current of 600mA per channel.
• H-Bridge configuration allows voltage to be applied across a load in either direction, ideal for motors.

Optimize the performance of your DC motors with the DC Motor Speed Regulator Controller PWM. Built with military-grade circuit boards and imported chips, this controller includes a 50V 1000uF large capacitor and an IRF3205 power tube, ensuring your motor runs smoothly. 

• Military-grade circuit board
• Imported chips and components
• 50V 1000uF large capacitor
• IRF3205 power tube
• 8500 large current terminals (300V 20A)
• Potentiometer resistance: B100K
• Working power: DC 12V-40V
• Power control: 12V*8A=96W, 24V*8A=192W, 40V*8A=320W
• Rated current: 8A, Maximum current: 10A
• Speed range: 10%-100%
• PWM frequency: 13KHZ
• Compact size: 60*55*28mm
• Net weight: 68g

• High-Precision Laser Sensor: Measures absolute distance up to 2 meters
• Compact Design: Small form factor for easy integration
• I2C Communication: Simplifies connection with microcontrollers
• Wide Voltage Compatibility: Works with 3V to 5V power supply

• 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

• Onboard AMS1117-3.3 chip for stable 3.3V output
• DC input voltage range: 4.75V to 12V
• Self-locking switch: Easily turn power on/off during testing
• Power indicator light: Indicates whether the power is on

• 3.5-inch TFT LCD display module with vibrant 18-bit color support.
• Compatible with Arduino Uno and other microcontroller boards.
• Integrated SD card slot for extended storage and project capabilities.
• High resolution of 320x480 pixels for clear visuals.

The USB Programmer CH341B is designed to support 24EEPROM and 25 SPI flash chips, featuring a CH341A chip for reliable performance. Ideal for tech enthusiasts and professionals. Key features include:

• Support for 24EEPROM and 25 SPI flash 8pin/16pin chips
• USB to TTL port for online rooting
• Automatic recognition of 25 series chips
• Support for downloading STC series procedures of single chips
• 24/25 status indicator lamp
• SPI pin for expanding utility

Specifications:

• Working Voltage: DC 4V - 60V
• Trigger Signal Source:
  • High-Level Trigger: DC 3.0V-24V
  • Low-Level Trigger: DC 0.0V-0.6V
• Output Power:
  • Voltage: DC 4V-60V
  • Current: 10A at room temperature, up to 15A with additional heat dissipation
  • Power: 600W
• Signal Frequency Support: 0-2.5KHz
• Operating Temperature: -40°C to 85°C
• Size: 4.6 x 2.9 x 1.5 cm

Package:

1x High Power 600W MOS Tube FET Trigger Drive Module PWM Control High/Low Level Trigger Switch DC 4V-60V 5V 12V 24V

• Efficient Charging: High-efficiency conversion up to 93%, ensuring quick charging
• Wide Input Range: Input voltage from 2.8V to 4.5V, ideal for 3.7V polymer lithium batteries
• Adaptive Output: Output current adapts to 5V 3A, 9V 2A, or 12V 2A based on the protocol
• Fast Charge Protocol Support: Supports QC2.0, QC3.0, Huawei FCP, DCP Protocols