Daily Archives: April 4, 2011

Project Update: Digital Vacuum Tube Tester (2)

Another piece of the puzzle arrived over the weekend: a relay board that can be driven from a microcontroller. There are eight relays on this board that can pass up to 10A of current at 120VAC, or 10A of current … Continue reading

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Preserving Sand Dollars

While visiting the coast for a relaxing beach weekend, I went exploring and found a whole bunch of sand dollars on the beach. Taking a break from my electronics projects, I figured I’d preserve my finds for collection and display. … Continue reading

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