QT Py (SAMD21) not showing up on PC after use

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aik_one
 
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QT Py (SAMD21) not showing up on PC after use

Post by aik_one »

Hi. I’m experiencing an weird issue with my QT Py boards. Two of them I was able to successfully program through Arduino. After now they are not showing up on the PC after I plug it in. I also cannot seem to get them to boot loader mode after double pressing the reset button.

Did I accidentally mess up the boot loader after programming it in Arduino? How can I debug this?

I have tried many different USB-C cables and couldn’t resolve this issue. I also tried a different computer and same issue, the PC doesn’t even recognize it.

I bought these for general purpose professional/work use and have 5 others that I need to program. Would appreciate some feedback.

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adafruit_support_carter
 
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Re: QT Py (SAMD21) not showing up on PC after use

Post by adafruit_support_carter »

What was the last successful Arduino sketch that was uploaded?

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aik_one
 
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Re: QT Py (SAMD21) not showing up on PC after use

Post by aik_one »

adafruit_support_carter wrote:What was the last successful Arduino sketch that was uploaded?
Thanks for the response. I was able to figure out the issue actually. One of the I2C boards I was connecting had 5V and GND shorted together, which was causing the USB port to protect itself. Not sure how I didn't catch that earlier.

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