This is a link to the article I published in the July 2016 edition of the Nuts & Volts magazine: an adjustable electronic load using old incandescent lamps.

Planning to rent a room in the Silicon Valley in 2016? This tool may help.

An Excel-based calculator eases the design of RC snubbers in power switching applications.

Carbon contacts under rubber keypads are known to wear-out over time. This article shows one way to repair them.

How to build an electronic camera slider controller with variable speed and auto-reverse features.

Mayan culture is fascinating to me. I find the elegance of their buildings, particularly the temples in form of pyramids, something to admire and explore. In this gallery, I post a selection of images from the great Kukulkan temple in Chichen-Itza.

LC Low-Pass Filter Analysis using the open-source computing language R .

How to make a camera recording monitor using a current sense circuit.

My review of the Canon FDn 50mm f/1.4 adapted to the Sony E-mount (NEX) mirror-less camera.

The In this article, I compare an "old" Olympus OM Zuiko 200 mm lens with a modern Canon EF-S 55-250mm IS lens set at 200mm.