Added instructions for hardware debugging
Added instructions for hardware debugging

etk29321/firmware,BrewPi/firmware,BrewPi/firmware,etk29321/firmware,BrewPi/firmware,glibersat/firmware,glibersat/firmware,BrewPi/firmware,etk29321/firmware,BrewPi/firmware,glibersat/firmware,BrewPi/firmware,etk29321/firmware,etk29321/firmware,glibersat/firmware,etk29321/firmware,BrewPi/firmware,glibersat/firmware,glibersat/firmware,glibersat/firmware,BrewPi/firmware