Datasheet

connect to the USBtiny driver. That way you don't have to be root all the time!
Check http://learn.adafruit.com/usbtinyisp/avrdude#for-linux (http://adafru.it/cf3) for what to
add to your udev file.
How to start the USB bootloader
Before you try to upload code to the Pro Trinket using the USB bootloader it must be in the
Bootloader Mode. That means its listening for a sketch or program to be sent to it
The Pro Trinket must be connected to a computer via a USB cable to enter bootloader
mode. You can enter the bootloader mode by pressing the little button on the board with
your fingernail. The bootloader will 'time out' after 10 seconds, so to re-enter the bootloader
mode just re-press the button!
Don't press-and-hold the reset button, be sure to press-and-release!
See the video below for what it looks like to plug it in, have the LED pulse in bootloader
mode, time out and then press reset to restart the bootloader
When the Pro Trinket is in bootloader mode, the red LED will be pulsing. Once the red
LED stops pulsing, you must press the reset button to re-enter bootloader mode
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