[Lichuang Development Board] Meng Jiaxu’s smart car

Liangshan School development board smart car design function description
1. Circuit design
1. Power supply Two 18650 lithium batteries, which are environmentally friendly. Since the microcontroller is 5v, it needs 7.4v to step down to 5v. The motor driver chip can be directly connected to the 7.4v module. The 3.3v power supply is provided by a microcontroller, the circuit is as follows:![image.png] 2. Motor drive module, I chose rz7899, the circuit is as follows:![image.png] 3. Bluetooth module, realizes the remote control function of the mobile phone, buy it directly A module is installed, and then inserted directly through the header, so that it can be used in other projects next time. The circuit diagram is as follows: ![image.png] 4. The obstacle avoidance function is implemented by the ultrasonic module. The circuit diagram is as follows:
![image.png] ] 5. There are reserved interfaces for remote control and vision. You can add them yourself if necessary:
​​![image.png] ![image.png] 6. Button circuit, the mode button selects the mode, and the start button can be pressed Start:
![image.png] 7. Tracking function, there is no actual test function due to site reasons:
![image.png] 8. The main control is Lichuang Liangshanpai development board
. The development board is based on GD32F450ZGT6 open source development, with rich open source tutorials ：
![image.png] 2. Software debugging
1. Bluetooth serial communication
2. ADC collects power supply
3. Buzzer alarm
4. Ultrasonic obstacle avoidance
5. The tracking
code is in attachment
3. The Bluetooth app
is based on http://app .gzjkw.net/This website has tutorials on the Lichuang B website. It is very easy to learn and you can get started quickly.
![image.png] will be followed by app