Teesny 4.0 usb connect / disconnect at random using Teensyduino on Arduino IDE

C

chrismoir

New member
Using Arduino IDE (on Windows 10) to upload a program with the Teensy connected to a Teensy port works ok. The program continuously outputs an ASCII string to the Arduino serial monitor. At random, the Teensy disconnects (lots of PC ding-dongs) and then (sometimes) reconnects on its own with no intervention. Sometimes it just dies, and will only restart if the USB is unplugged and re-plugged. The red bootloader light is out.

If I connect the Teensy to a normal USB port (COM1) and run RealTerm, nothing appears - the port is dead, no status lights etc.
 
Further to the above, loaded a simple blinky with an output to Arduino serial monitor.

1775126815491.png


Examining the port, instead of the hid / usb notification, the Teensy port was set to COM8, and this seems to run ok.
 
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