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Monthly Archives: March 2010
A quick review of the HPS10se portable Oscilloscope from Velleman
I ordered this device about a year and a half ago for about $130USD. When I got it, I wasn’t terribly impressed but overall, for the price it’s not a bad unit. I figured it’s be nice to provide a … Continue reading
Coolant mixture sensor (psuedo-refractometer)
A bit ago I got the idea of trying to determine the mixture of coolant vs. water by detecting both light occlusion of the mixture and the wavelengths blocked / passed. This initial device is just a rough prototype that … Continue reading
The Amp Hour Radio Show