1. When the openmv is just plugged in, the following prompt may appear, no openmv cam is found,
A possible problem at this point is that
(1) openmv can’t work normally. At this time, switch to a computer that can operate normally to see if openmv works normally. If it can, it means other reasons, not the camera;
(2) The problem of the data line. Switching to different data lines will cause corresponding problems in many cases, and some data lines cannot be recognized;
(3) Drive problems. Generally, after plugging in the openmv driver, the driver will be installed automatically, but some computers may have incomplete driver installation. At this time, find the port in the task manager. If there is a yellow exclamation mark on the port, it means that there is a problem with the driver. At this time Drivers should also be updated
https://book.openmv.cc/quick-starter.html can refer to the above article
(4) The matching problem of the serial port. There may be other actually connected or virtual connected serial ports, which will cause the serial port of openmv to be unusable, so the occupied serial port must be removed at this time. (The problem I encountered this time is the problem of the serial port. I connected the two serial ports together with the virtual serial port assistant, which caused the serial port to be occupied. It will always appear, and the error report of openmv cannot be found)***
This is some headaches that I have encountered during debugging.
Recommend some teaching videos and study notes of openmv
https://blog.csdn.net/HZ_CloudRiver/article/details/78177307