It clicks the following buttons: left ctrl, right ctrl, left shift, right shift, up arrow, left arrow, right arrow, down arrow. It also does mouse clicks, scrolls and changes tabs in an ide and browsers. All actions are performed randomly in random time ranges.
download keyer file (already built for linux) and run
./keyer
type 'y' for start, click 'esc' button to pause, click 'esc' one more time to stop
you should install go (golang)
go build
or
go run main.go