I ran the TeensyDuino to re-redo the install, and it came up saying the serial driver was already installed. I had installed the serial driver as part of the original install, but I installed it again, still same issue. Yes, I am running code, and it does get uploaded because I change the blink rate each time I re-upload, to check. The auto-reboot has some special timing code that tries to work around known bugs in the Windows drivers, so it's always best on Windows to let the auto-reboot do the rebooting, if it can. they truly don't care about their serial drivers, considering anything serial as "legacy"). Microsoft's drivers can get confused and leave corrupted stuff in the registry, causing the next time the device appears to be improperly detected (I've talked with people at Microsoft. Once you're up and running, it's always best to click Upload and let Teensyduino auto-reboot the board if it can. After you've run the serial installer, the device manager should be able to find the driver.Īlso, on Windows, Microsoft's drivers aren't very reliable (compared to Mac and Linux which are very solid). In the device manager, you can also use "update driver" on the unknown device. You might need to upload code again, or plug it into a different USB port (Windows is a little funny about how it recognizes devices). It's on the download page, on the right side under "Other Files".Īfter running the installer, Windows should begin showing Teensy as a COM port in the device manager. There's also a stand-alone serial installer. You can run the Teensyduino installer again and just quit after completing the driver step.
#Tera term serial port greyed out install
If you skipped this step during the Teensyduino install, then you'll need to go install the driver. If Teensy is running your code, then it should be a serial device. have you actually uploaded a program, after setting Tools > USB Type to Serial? It's not clear from either of your message if you have successfully uploaded to the board yet. Nantonos is right, the Teensy only becomes a serial device after it's running your code.