The power supply is powered by a high-voltage battery, and the voltage is reduced to 3.3V through XL4015 to power the main control
Due to the limitations of XL4015, the power supply voltage should be between 8v-30V. If it is too low, it cannot be started.
Then the HX3608 is used to boost the voltage to 5V or 6V to drive the motor. Here, the L9110S is used to drive four motors.
Due to the limited IO of ESP8266, a PCF8574T_C2832396 is used for IO expansion, which is just enough for the four wheel motors.
At this stage, we have only made the board and haven’t verified the code yet because the wheels haven’t arrived yet.
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