Design of intelligent car based on Lichuang Liangshan School

Functions that have been realized
1. Obstacle avoidance mode: When the car encounters an obstacle, it can move left and right to avoid it.
2. Bluetooth remote control: The remote control car can move forward, backward, left and right, rotate left and right, and stop moving.
 
Problems encountered but solved
1. Since it is the first time to DIY, I don’t know how to solder SMD components.
2. The code often compiles incorrectly and I can’t find the error myself.
3. I don’t know how to use Keil5 to write programs and build a development environment.
 
Solution
1. Use your mobile phone to find the corresponding tutorial on Station B and practice.
2. Go to CSDN or Baidu and study the problem a little bit to see where the problem lies.
3. Follow the development materials provided by the official website and build step by step.
 
Current problems:
1. Due to PCB design errors, the tracking module is placed on the top layer and the function cannot be realized.
2. When the battery is low, the car moves, which may cause the main control to restart.
3. Due to the problem of inaccurate code, the obstacle avoidance function retreats too long.
 
Improvement direction:
1. Use rechargeable lithium batteries and improve power supply design.
2. Improve the PCB board.
4. Optimize the code to achieve more functions
 
. Gains:
1. I only learned how to use 51 MCU to achieve simple functions before, but through this experiment, I successfully integrated these modules and made some functions run normally.
2. This is my first time to use EasyEDA Professional Edition for manual wiring, and I learned some PCB wiring rules and techniques. This is my first time to do manual wiring, and I used AD's automatic wiring before.
3. I am a little familiar with the procurement and management of materials.