Lichuang development board, Xiaocai’s smart car

## Xiaocai’s smart car v1.0

### Some thoughts:
It’s my first time to draw a circuit board. Many things are completely unclear. The first version was not designed to be complex enough. I just hope that it can be made and it can move. Let’s start with this goal. Follow the video and learn step by step. Through this study, you can understand the design process of organizing the circuit board, the soldering of some components, and some basic development knowledge of SMT32 (setting up the environment, writing and burning the program), and Android App development, simple 3D model design and use of 3D printer.

![WechatIMG261.jpeg] ### Function
1. Bluetooth controls the movement of the car and the light switch.

The appearance is as shown in the picture above

### Important components
1. Two 18650 batteries as power supply
2. Jialichuang development board
3. HC-05 Bluetooth board
4. RZ7889 as DC motor driver
5. Sweeping robot chassis
6. Simple 3D printing panel

### Task list
* [x] Lamp Switch control
* [X] Four-wheel PWM control
* [x] Support Bluetooth control
* [x] Mobile phone simple APP development
* [x] Car structure assembly and design
* [ ] Support wireless and wireless remote control
* [ ] Mobile phone openbot application support

Finally, I would like to thank the Jialichuang platform and teachers for their guidance, as well as the support of this group of friends, so that a novice like me can draw a normally working circuit board.