avrdude: usbdev_open(): did not find any USB device "usb"
I have built Gemma invader pendant, loaded libraries, compiled code, no errors. However I cannot upload sketch to Gemma, only get this message every time: avrdude: usbdev_open(): did not find any USB device "usb" even though ide says Done Uploading.
I have searched and found many have this message doing various things with microcontrollers, but no tricks have worked for me. I have rechecked every connection etc. many times, restarted ide, rebooted Gemma, only to get this message.
How do I get this to work?
did not find any USB device "usb"
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- adafruit_support_mike
- Posts: 67454
- Joined: Thu Feb 11, 2010 2:51 pm
Re: did not find any USB device "usb"
The Gemma's bootloader doesn't enumerate as a USB serial port like a regular Arduino. It looks like a programmer.
Select "USBtinyISP" under the "Programmer" menu to talk to it. The tutorial shows how it all works:
https://learn.adafruit.com/introducing- ... rduino-ide (toward the bottom of the page)
Select "USBtinyISP" under the "Programmer" menu to talk to it. The tutorial shows how it all works:
https://learn.adafruit.com/introducing- ... rduino-ide (toward the bottom of the page)
Please be positive and constructive with your questions and comments.