Automated cloud set up may include collecting compute resources available for setting up a cloud, identifying packages available to apply to the compute resources, and determining which subsets of the packages to apply to which compute resource. The cleaning system can include an air manifold and tubing network for receiving pressurized air and distributing the pressurized air to an outlet port near to the grain tank of the harvesting apparatus. The switching circuit is controlled to supply the input signal and the reference signal to the sampling device so as provide a substantially zero total charge taken by the sampling device from a source of the input signal.