... ~ 70 A smart car and a is enough; 3, and single chip microcomputer 5 v isolation, and effectively protect microcontroller; 4, motor ... output terminal voltage display; 5, can welding heat sink; 6, single chip microcomputer to drive module with four with line can (GND ... , battery power supply drive power; 8, isolation chip 5 v power supply (with single-chip microcomputer Shared 5 v); 9, power support 5 ...