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Feather 32U com port not detecting
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Feather 32U com port not detecting

by Zaid1991 on Sat May 11, 2019 5:10 pm

hi, I recently bought an adafruit 32u feather. Initially I could connect it through the Arduino IDE. But now I see no change in com ports when I connect it though the usb port, it doesn't detect the board now. I tried using various USB cables but still no change.
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Re: Feather 32U com port not detecting

by adafruit_support_carter on Tue May 14, 2019 1:45 pm


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Re: Feather 32U com port not detecting

by Zaid1991 on Tue May 14, 2019 3:08 pm

Yes, I installed all the drivers. Initially feather used to connect but now it doesn't show the COM port in device manager. I tried the verbose upload method as well but apparently it doesn't work as well.

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Re: Feather 32U com port not detecting

by adafruit_support_carter on Tue May 14, 2019 6:31 pm

What was the last you did before it stopped showing up as a comm port?

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Re: Feather 32U com port not detecting

by Zaid1991 on Tue May 14, 2019 6:46 pm

I connected the HC-05 Bluetooth module to the feather and uploaded the program.

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Re: Feather 32U com port not detecting

by adafruit_support_carter on Tue May 14, 2019 6:49 pm

Remove the module so nothing else is connected to the Feather. Then try this to see if it helps:
https://learn.adafruit.com/adafruit-fea ... help#faq-4

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Re: Feather 32U com port not detecting

by Zaid1991 on Wed May 15, 2019 11:57 am

I removed everything and tried this step: https://learn.adafruit.com/adafruit-fea ... help#faq-4 but still it doesn't detect any COM port.

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Re: Feather 32U com port not detecting

by adafruit_support_carter on Wed May 15, 2019 12:37 pm

It worked and then it didn't work. Maybe it has something to do with how you were connecting the HC-05 module. Can you post a photo of your setup showing how you had that all connected. Did it ever work with the module attached?

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Re: Feather 32U com port not detecting

by Zaid1991 on Wed May 15, 2019 4:48 pm

This is my connection with hc05 Bluetooth and mpu 9250:
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2019_05_15.jpg
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Re: Feather 32U com port not detecting

by adafruit_support_carter on Wed May 15, 2019 5:00 pm

You'll need to solder the headers at some point. None of the external modules will work otherwise. I could see how that would prevent you from seeing and talking to the modules, but would not expect it to prevent the Feather from showing up.

You had the Feather completely removed from this setup when you tried the test above?

I tried using various USB cables but still no change.

Double check this by using the USB cable with something else to verify it works for data.

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Re: Feather 32U com port not detecting

by Zaid1991 on Wed May 15, 2019 5:09 pm

Yes, I removed the whole setup while trying the verbose upload method using a verified USB data cable. The same USB data cable works for my other microcontrollers. Additionally I also tried manually resetting the microcontroller.

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Re: Feather 32U com port not detecting

by adafruit_support_carter on Thu May 16, 2019 11:55 am

With the board plugged in using that known good USB cable, what does the little red LED next to the USB connector do when you press the reset button once?

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Re: Feather 32U com port not detecting

by Zaid1991 on Thu May 16, 2019 2:11 pm

That red LED beside the USB connector doesn't blink at all even after pressing the reset button.

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Re: Feather 32U com port not detecting

by adafruit_support_carter on Thu May 16, 2019 2:14 pm

That doesn't sound good. So the last thing that worked:
I connected the HC-05 Bluetooth module to the feather and uploaded the program.

Did that upload seem to happen OK? Do you think there was any chance of a short with any of the wires connecting the HC-05 module?

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Re: Feather 32U com port not detecting

by Zaid1991 on Thu May 16, 2019 2:27 pm

The Bluetooth upload happened smoothly and the Bluetooth was working perfectly. But when I reconnected them later few days after, my computer didn't recognize the device. There wasn't any change in the COM ports detected as well. And then I tried the verbose upload method and reset the bootloader but that didn't even work for me.

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