Red LED doesn't blink, bootloader doesn't run
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
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- Posts: 2
- Joined: Sat Jul 26, 2014 12:40 pm
Red LED doesn't blink, bootloader doesn't run
I plugged in my Gemma for the first time and sat down with the Adafruit Arduino IDE. The red led dimly blinks once and stops, both when the Gemma is first plugged in and when I press the reset button. Trying to upload the blink sketch gives me the error that happens when the bootloader isn't running.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Red LED doesn't blink, bootloader doesn't run
You can repair the bootloader by following these instructions:
https://learn.adafruit.com/introducing- ... bootloader
https://learn.adafruit.com/introducing- ... bootloader
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- Posts: 2
- Joined: Sat Jul 26, 2014 12:40 pm
Re: Red LED doesn't blink, bootloader doesn't run
Ok, so, it wasn't the gemma, it's something about my computer, it worked as soon as I tried it on a friend's. Could it be that I have USB 3.0?
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Red LED doesn't blink, bootloader doesn't run
Try a different USB port. Also, try connecting through a self-powered USB hub. Trying a different cable is also a good idea.
- enurbs2015
- Posts: 1
- Joined: Thu Feb 12, 2015 11:14 pm
Re: Red LED doesn't blink, bootloader doesn't run
Does this happen on Macs?
- Franklin97355
- Posts: 23912
- Joined: Mon Apr 21, 2008 2:33 pm
Re: Red LED doesn't blink, bootloader doesn't run
The USB 3 problem does.
Please be positive and constructive with your questions and comments.