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5 Channel TCRT5000 IR Array Tracking Sensor Module is a sensor board designed for use with line follower robots. This IR sensor module has been sufficient to meet the frequent task of tracking, but also with the infrared distance sensor and touch detection sensor. This TCR T5000 array unique makes your robot design able to adapt to the situation easily. It is specifically designed as a black line especially suitable for the complex of the black and white line, cross black and white line detection. This high-quality sensor module has 6 roads high sensitivity infrared sensor (5 escapes patrol, 1 road), to the recognition of black and white line accurately.

This is a 5V 4-channel relay interface board, and each channel needs a 15-20mA driver current. This 4-way relay module can be used to control various appliances and equipment with large current. This four-channel relay module is equipped with high-current relays that work under AC250V 10A or DC30V 10A. 5 volts relay driver module has a standard interface that can be controlled directly by the microcontroller. This relay module board allows a wide range of microcontrollers such as Arduino, AVR, PIC, ARM with digital outputs to control larger loads and devices like AC or DC Motors, electromagnets, solenoids, and incandescent light bulbs.

These temperature sensors work great with any microcontroller using any single digital pin. We can also connect multiple ones to the same pin. Each one has a unique 64 bits ID burn. It is useable with 3 to 5 volts systems. There is one downside of this sensor is they use the Dallas 1-wire protocol, and which is somewhat complex. This protocol requires a bunch of code to parse out the communication. When you are using this temperature sensor with a microcontroller put a 4.7K resistor to the sensing pin.

The Obstacle Detector sensor module is perfectly adaptable to the environment light, IR Object Avoidance Sensor has a pair of infrared transmitting and receiving tubes; transmitting tube emits infrared in a certain frequency, when detecting direction meets with obstacles(reflecting surface), reflected infrared will be received by the receiving tube; after the comparator circuit processing, the green indicator will light up, at the same time signal output interface to output digital signal(1 low-level signal). Users can adjust the detection distance through the potentiometer knob, effective distance range 2~30cm and working voltage is 3.3V to 5V. The Obstacle Avoidance module LM393 can be widely used in robot obstacle avoidance, obstacle avoidance car, line count, black and white line tracking, and so on many occasions.