Introduction - If you have any usage issues, please Google them yourself
This design uses a singlechip AVR mega16 to be the core device of the control system and use a little keyboard of 4*4 to be the import equipment.At the same time,this design includes a reflecting infrared send-receive implyment to be the data collece equipment and include a L298N chip to consist the power enlarge circuit which is used to drive the electric machinery.The numerical code tube is used to be the implyment of the display circuit. This design use direct current regulated power supply to provide power.All these above consist of a whole electric machinery drive and rotate speed showed closed loop system.On the basic of the basal hardware circuit,the system use a method that control arithmetic of impulse and duty ratio to achieve the direct current electric machinery’s mensuration 、display and control.This design can achieve quick and accurate control of the electric machinery’s rotate speed and turnaround and start-stop and many other work stats.