Manually Focusable Logitech C270
Instructions for modifying a Logitech C270 so that one can adjust the focus manually. The Logitech C270 is an inexpensive all-purpose webcam with a fixed focus which is set at the factory to be used for face-to-face video meetings with…
YSC-4 Electronic Clock
I’ve just completed building a small electronic clock from a kit, the YSC-4 kit from HiLetgo, which I was able to purchase from Amazon1 for under $9. My interest in this kit was to find something simple that is nevertheless…
The Compartment Box Trick
Have you ever taken something apart and then put it back together and had parts left over? Me too. Sometimes it’s something I know isn’t needed, but it’s still better to get everything back in the right place. A few…
Repairing a Cenco 33031 Power Supply
by Laurence Rowe and Eric Myers We use the Cenco 33031 Low Voltage Power Supply (Figure 1) for several of our electricity and magnetism labs. It can provide variable DC up to 6 Volts at up to 5 Amps, and…
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