... is enough; 3, and single chip microcomputer 5 v isolation, and effectively protect microcontroller; 4, motor ... module with four with line can (GND, 5 v, PWM1, PWM2); 7, battery power supply drive ... 8, isolation chip 5 v power supply (with single-chip microcomputer Shared 5 v); 9, power support 5.5 ... ~ 25 v; 10, maximum frequency support 15 ...