We prepared one month in advance, under the guidance of teacher, familiar with the arm3 kernel based stm32f103 platform, and made several sets of test questions in the previous years and here recommend ball wind pendulum control system and control system, in the process, a clear division of labor, know how to make a complete system, and strengthen the knowledge reserve,
About the game, we need to prepare some modules: including:
, the power supply module:
Commonly used power supply voltage regulator module (1) the 12 V, 9 V, 5 V, 3.3 V and dual power supply + 5 V, + 12 V
(2) can raise voltage power supply module
2, the smallest system:
Determine the kind of competition with the single chip microcomputer, C51, AVR, FPGA, STM32 and so on, to be a minimum system, which leads to the port, so
3, driver module:
This should belong to the necessary module (if you choose to control class topics), L297 and L298 of UNL2003, UNL2803,

4, the signal processing module:
A signal processing module is mainly the analog signal into a switch, and put some signals to other (the sine wave into a square wave), voltage comparator (LM393, LM339), signal amplifier (op-amp TL082 is commonly used, TL084)

5, AD, DA module:
With advanced single chip microcomputer basic AD now, but still need to prepare some DA module, AD, DA module can be used in some sensors,
6, sensor module: (this should be ready to stage the key to prepare,)
(1) tracking light coupling (usually black) can also draw lessons from freescale car series, only follow wire (wire) with a certain frequency
(2) phototaxis module (photosensitive resistance or photosensitive diode)
(3) hall sensor
(4) proximity switch (metal)
(5) ultrasonic sensors (range, obstacle avoidance)
6 (infrared wireless remote control, obstacle avoidance)
All landowners Angle sensor
Today acceleration sensor
Pet-name ruby humidity sensor
Attending the smoke sensor and temperature sensor
? Color sensor
Etc.
Before the game we can write the underlying function first
The last '