2.1 Reselect the correct port. (tips: you can try all ports)
重新选择正确端口（提示 可以把所有端口都试一下）
2.2 Baud rate selection: 115200
波特率选择 115200
2.3 Close other software that occupies the port or opens repeatedly.
关闭其他占用到端口或重复打开的软件
2.4 Check whether the data cable connection is normal.
检查数据线连接是否正常
3. Q&A of Motor
电机问题
3.1 First of all, please make sure that the wiring of the motor line or the motor
terminal or the mother board port is firm, whether there is loose phenomenon
or
bad contact, which can be Re-power test.
首先确保电机线或电机揣子处或主板端口处的接线是否牢固 ，有无松动现象和接
触不良，可重新通电测试
3.2 Swap the motor, If there is still no response after replugging, test it after swap-
ping
the defective motor with the normal motor of the motherboard port . After the
test, make the motor fault judgment. (A. Motor line problem B. Drive problem C.
The motor is shaking. The direction is opposite to the actual direction and there is
no response after power on.
电机出现抖动方向与实际相反已经通电后没有反应
FAQ
1. Machine installation videos, software operation tutorials and access？
机器安装视频，软件操作教程及获取途径？
1.1 In the TF card or U disk included in the package.
1.2 Or download it from our official website:
包装附送的TF卡中或者从我们的官网下载:
https://www.facebook.com/groups/636514078064476/
2. What should I do if the LaserGRBL software cannot connect to the laser
engraving machine? / LaserGRBL
软件无法连接激光雕刻机 ，怎么处理？
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