I bought 186 Pcs. Seeeduino Lotus Cortext M0+ . Now the serial port of already 15 of those boards is not not to be found anymore.
The Power led is on but I can’t select the Serial Port via: Tools > Ports
These boards worked before.
(I also can not get these 15 board into bootloader mode via doubleclick the Reset))
This is the problem (board/port not found - MAC):
It is not the Computer or USB cable, same setup with other Seeeduino works perfect - same MAC:
How can I fix this?
My students start to panic, and I can’t blame them. Looks like the Seeeduino is very unstable.
Hermanus van Vugt
University of Applied Sciences