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pHG7881 (L9110) module can be used to drive a small robots. The module can simultaneously drive two DC motors or a 4-wire 2-phase stepper motor. It has 800 mA continuous current output. It can be connected directly to the CPU.It has low static work current and low saturation pressure drop with other features as well./p

pInfrared Sensors (IR) Module  is used to detect presence of any obstacle in front of the sensor module. It  has built-in IR transmitter and IR receiver , on board potentiometer .. Even in low light or in complete darkness the sensor has very good and stable response. It can be used for Obstacle avoidance in robots , Security systems and other object detection.It is stable and accurate with male header for easy connection./p

pThe PCF8591 Module(ADC-DAC)  is a 8-bit CMOS data acquisition devices. It  has the four analog inputs.The three address pins in PCF8591 can be used in hardware address programmed 8 PCF8591 device allows access to the same I2C bus, without the need for additional hardware.The two-wire bidirectional I2C bus is  used to transmitted the input and output of the address, control and data signals and many more.  IT has on chip track and hold circuit in-built./p

pThe Audio Amplifier Module based  on LM386 chip is a mono audio amplifier that can be used to boost up the volume of  microphone , mp3 player etc with low voltage audio signals. It operates on the voltage range between 4V to 12 V. It has on board power indicator./p

pThe GY-271 Compass Module used the HMC5883L chip .It is the 3 axis magnetic electronic compass designed for low field magnetic sensing usually used for small projects./p

pThe TCRT 5000 sensor module helps to detect color and distance.  It  has on board indicator LED and has good accuracy . It provides clean comparator output signal. To adjust the sensitivity on-board potentiometer is in-built. The bolt hole present for  easy installation . It can be used in detecting rainfall, liquid leakage etc. Its measuring distance is from 1 mm to 8 mm./p

pThe Vibration Sensor helps to detect the vibration of the surrounding environment that is normally open and comes with LM393 chip 0 with The comparator output, signal clean, good waveform, driving ability is strong, for more than 15 mA having fixed bolt hole and is convenient to install. The sensitivity can be adjusted using the on board potentimeter. It has LEDs indicating for output and power./p

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pGY-45 MMA845x Sensor, digital triaxial modules is embedded functions with flexible user-programmable option. Its mostly used for Static orientation detection, E-compass application and many more. It has 14-bit and 8-bit digital output  with user selectable dynamic range of  ±2g/±4g/±8g. It easy to use . It has features of vibration detection and pulse detection./p

pThe Ultrasonic Ranging Module HC-SR04 is a distance measuring sensor that can measure with the accuracy range from 2 cm to 400 cm. Its ranging accuracy can be up to 3mm. It has stable performance with high density SMD board. It travels until the wave gets reflected to an object through which we can know the distance. It can be used for Security system, Object distance measurement and many more./p

pThe 3 way Line Tracking Module  have 3 digital outputs to user where  every  sensor is provided with its own LEDs as indication of line detection  .It is typically used for robots either dark or bright line following. It  helps a robot to move in the desired line made by the user.It has easy installation fix bolt hole. It has strong anti-interference ability with stable performance./p

p5 channel high sensitivity sensor has a High accuracy for tracking black line.It has high sensitivity which is able to accurately identify the lines of characteristics. They can be operated by any microcontroller or Arduino module as these sensors are digital.They have Infrared detection , touch detection sensor and led indicators. These sensor are built to detect block line with high precision/p

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