Update4： My mistake, the silk screen printed on the right HALL and PWM ports of the first 15 upper cover silk screens was wrong (reverse) (as shown in the picture). Please ignore this silkscreen and refer to the silkscreen wiring on the left or the color of the wires. I am sorry for the inconvenience caused to you. For this reason, I am willing to issue a 10% discount coupon for the first 15 users as compensation. Sorry again.