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2009 UNO LENARDO 2560 controller seamlessly mainstream - 4 -way LED indicator ( LED indicator to know the importance £¬ in the actual doing projects £¬ with this indicator can be used directly working status LED indicates the procedure to facilitate debugging. - DS18B20 temperature sensor interface that can be done to measure the temperature of the experiment £¬ this price does not include the DS18B20 Oh£¬ needed another shot . - LM35 temperature sensor interface that can be done to measure the temperature of the experiment £¬ this price does not include LM35 Oh£¬ needed another shot . - 3296 precision adjustable potentiometer£¬ analog input port ( can be used for controlling LED brightness£¬ turn the steering angle £¬ the digital voltage£¬ etc. ) - Integrated infrared receiver that can fit any infrared remote control experiments £¬ the price also does not include the integrated receiver and needed another shot . - Four digital tube ( using 74HC595 driver provincial IO learning SPI)£¬ you can do digital display experiment ( can display temperature £¬ voltage£¬ counter value £¬ etc. ) . - Three separate buttons£¬ a reset button £¬ the button can do experiments ( HMI ) . - The buzzer sound can be used for experiments . ( Can call the police £¬ pronunciation £¬ etc. ) - Bluetooth£¬ wireless interfaces£¬ voice module £¬ voice recognition module can be used for wireless communication experiment - Servo interface£¬ easy to drive servos - Infrared detection interface£¬ easy and infrared docking realization of human traffic statistics £¬ etc.