Design of the Control System of the Wind Board Based on MCU

The wind board control system is designed, taking MSP430F149 as the core control chip and STC89C52 as the auxiliary control chip. This system adopts 12864LCD as the display, selects the working mode and sets the wind board position angle by the button. And the system detect the change of wind board's angle in real time through the acceleration sensor ADXL345 which have high accuracy, change the duty cycle of PWM using the increment PID algorithm. Thus the speed of 2 DC fan can be adjusted in order to set up the wind board to a preset angle. The wind board can smoothly and accurately reach the preset angle under the no-load condition, and can realize the fast periodic swing between the two angles. What's more, the dynamic position and angle of the wind board can be displayed on the LCD screen in real time. The system operation interface is friendly.