#PWM_Car_Project

• This is my PWM car project with STM32F4 and L298 motor controller .
• My shor-tenm goal is to build a car with obstacle avoidance.
• My materials are as follow:
  • STM32F4 Discovery : http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00039084.pdf
  • L298 Motor Controller : http://wenku.baidu.com/view/0b1446d3b9f3f90f76c61b1e.html
  • Car similar to this one : http://goods.ruten.com.tw/item/show?21112137347372
  • SR04 Utrasonic module : http://letsmakerobots.com/node/30209

#Developer's Note

• 2013/09/17 Implement Go() function

• 2013/09/12 Finish 3 basic functions to control ONE motor

  • Go forward
  • Go backward
  • Stop the car

#Pin connection of STM32 and L298

  STM32           L298         Note
  
   3V              ENA         Always enable motor A
   
   3V              ENB         Always enable motor B
   
   PD6             in1         in1 control forward rotation
   
   PD8             in2         in2 control backward rotation  
   
   PD10            in3         in3 control forward rotation
   
   PD11            in4         in4 control backward rotation  
   
   GND             GND         common ground

#Reference

• STM32F4 Discovery PWM : http://wiki.csie.ncku.edu.tw/embedded/PWM

• L298 Reference Manual : http://wenku.baidu.com/view/0b1446d3b9f3f90f76c61b1e.html

• Arduono with L298 Controller : http://coopermaa2nd.blogspot.tw/2012/09/l298n.html