Abstract: The present disclosure provides a fluid level monitoring system comprising a microcontroller, an oscillator configured to generate an output signal having a frequency, and a probe coupled with the oscillator. The probe comprises a first wire and a second wire having a capacitance therebetween that varies as a function of the presence of fluid around the probe. The frequency of the output signal varies as a function of the capacitance between the two wires. The microcontroller is configured to determine the amount of fluid proximate the probe based on the frequency of the output signal. The system enables accurate fluid level monitoring using simple components and signal processing techniques.

Abstract: A hooded sun shield includes a head piece including an opening, side vents and a plurality of fasteners, and a mask piece attachably coupled to the head piece via the plurality of fasteners over the opening, including a first layer and a second layer formed over the first layer, first layer and second layer form a horizontal vent in the mask piece.

Abstract: An hooded sun shield is disclosed. The hooded sun shield includes a head piece including an opening, side vents and a plurality of fasteners, and a mask piece attachably coupled to the head piece via the plurality of fasteners over the opening, including a first layer and a second layer formed over the first layer, wherein the first layer and second layer form a horizontal vent in the mask piece. The dimensions of mask piece are greater than the dimensions of the opening of the hood piece, which creates vertical slits, facilitating the flow of breath and the movement of air through mask piece.