Datasheet

On Linux if you get the error message "usbtiny_receive: error sending control message:

Protocol error (expected 4, got -71)"

These can generally be ignored and should not interfere with the program upload. Unfortunately Linux's USB core is a

little flakey communicating with the ATtiny85 processor on the Trinket/Gemma and can cause these errors. If an

upload does fail, try it again as it is likely an intermittent issue.