There's no such make Bitcoin while you sleep, if we talking about the real mining rigs that you must have decent knowledge and start to mine on your home, you wouldn't get any profit after 3 days since the electricity cost and your initial capital is huge, you wouldn't make any profit for short time. Setting up mining rigs is quite hard for newbies, I don't think you will sleep well even though your mining machine already start to mine, because you need to check your mining machines few times.