1. with the market, 2009 2560 and other mainstream controller seamlessly fitting .4-way led indicator (to know the importance of the led indicator, in the real project, this indicator can be used directly to indicate the working status of the program to facilitate debugging the program.2. ds18b20 temperature sensor interface , you can do the temperature measurement experiment, the price is not included in the ds18b20 oh, if necessary, another shot. lm35 temperature sensor ratio, you can do the temperature measurement experiment, the price is not included in the lm35 oh, if necessary, another shot.3.3296 precision adjustable potentiometer, providing analog port input (can be used to control LED brightness, rotating ng steering gear angle, digital voltage, etc.) integrated infrared receiver, can be suitable for any infrared remote control experiment, the price is not included in the integration of the receiver and, if necessary, another shot.4. four digital tube (using 74hc595 unit province io learning spi), you can do digital display experience (can display temperature, voltage, count, etc.). three independent keys, a reset button, you can do the key experience (human-machine interface).5. the bell can be used for the sound experiment. (Can alarm, pronunciation, etc.), bluetooth, wireless interface, voice module, voice recognition module, can be used for wireless communication experience, steering gear interface, easy to drive the steering gear, infrared detection interface, convenient fitting and infrared, to achieve traffic statistics.Material:metalcolour:bluePackage Contents:1 x boardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
