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Impedance graphs, schematic symbols, important datasheet parameters, uses, example circuits and more info on ferrite beads.
Architectures, how to read the datasheets, manufacturer part numbers and more info about Digital-to-Analogue Converters (DACs).
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SENSORS
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The primary method for detecting carbon dioxide (CO2) is to use infrared gas sensors (NDIR). Chemical sensing is another method for detecting CO2. CO2meter.com sells a range of CO2 sensors, and provides support to connect them easily to an Arduino (see here for a UART example).
