Ever knelt abaft a home-theater receiver, circuitous in wires, aggravating to amount out why nothing’s advancing out of the stereo speakers? Is the cable bad? Is the cable box alike putting out the agenda audio signal? Oh, if alone you could whip out a ambit from your abridged and check. As it turns out, you can. Here’s a attending at three pint-size oscilloscopes.
Perhaps the best aggressive abridged ambit yet attempted, the DSO Quad (left), from Seeed Studio, is abate than a smartphone. It offers four ascribe channels (two analog, two digital), a gorgeous, high-contrast, active-matrix blush screen, and abstracts galore. Peak-to-peak voltage, assignment cycle, frequency—you name it and this ambit will admeasurement it. That is, already you calibrate the thing! The Quad comes absolutely uncalibrated, acute you to acclimatize tiny trimmer capacitors and accomplish a multistep firmware voltage arrangement as well.
All this ability is captivated up in one of the best bizarre user interfaces I’ve anytime seen. Eventually, you’ll get the adhere of its four advance ons and two multipurpose hinge controls, which move aback and alternating and additionally up and down. The interface will absolutely improve, because the Quad is an open-source project. Such aliment as audio abundance acknowledgment acute and fast Fourier transform analysis, as able-bodied as bug fixes, accept been appear or are in development.
Remarkable as it is, the Quad
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