Abstract: A method of monitoring a material yield sensor assembly for upward baseline drift, the method comprising steps of receiving a signal representing a plurality of raw baseline datapoints from the material yield sensor assembly, passing the raw baseline datapoints through an IIR filter thereby producing a plurality of filtered datapoints, fitting the filtered datapoints to a curve via a curve fitter thereby producing a plurality of fitted datapoints, and generating an alarm indicating the material yield sensor assembly should be serviced if a fitted datapoint of the plurality of fitted datapoints is greater than a first threshold.

Abstract: A material yield sensor assembly comprising a photodiode and a processing element. The photodiode is configured to generate a signal representative of an amount of material passing by the photodiode. The processing element is configured to convert the signal from an analog form to a digital form, determine a clipping density of the signal, decrease a gain of the signal if the clipping density is greater than a first threshold, and increase the gain of the signal if the clipping density is less than a second threshold to optimize signal integrity versus signal resolution.

Abstract: A dispensing cart includes a base supported by a plurality of wheels such that the base is suspended above a support surface, a mast operably coupled to the base, a work surface operably coupled to the mast such that the work surface is vertically adjustable, a drawer system comprising a plurality of drawers positioned in the cart lower than the work surface and higher than the base, and a first battery. The cart is configured such that the first battery is hot swappable with a second battery without loss of power as the first battery is removed to be replaced with the second battery.